AQ/SACD Ground System Overview by FU84Hzk

VIEWS: 18 PAGES: 103

									Aquarius Command and Control System pre-CDR

                                              1
Aquarius Command and Control System
          pre-CDR Agenda
                             Agenda
•   Aquarius Science Mission Overview
•   Aquarius/SACD Ground System Overview
•   NASA Ground Network AQ/SACD Support
•   Ocean Biology Network and Information Technology Security
•   Aquarius Operations Concept – Nominal
•   Aquarius Operations Concept – Anomaly
•   Aquarius Command and Control Requirements
•   Aquarius Command and Control Design
•   Aquarius Test Bed
•   Aquarius Command and Control Test Plan
•   Risks

Acronym List and Backup Slides provided
                                                                3
Aquarius Science Mission Overview
                                        Aquarius Mission Science
     Understanding the Interactions Between the Ocean Circulation,
   Global Water Cycle and Climate by Measuring Sea Surface Salinity

       WOA 2001
      NOAA/NODC




      Equation of State for Sea Water
 sw ( S , T )   fw (T )  b(T ) S  c(T ) S 3 / 2  dS 2
                                                              Global salinity patterns are linked to rainfall and
                                                              evaporation
                                                              Salinity affects seawater density, which in turn governs
                                                              ocean circulation and climate
                                                              The higher salinity of the Atlantic sustains the oceanic
                                                              deep overturning circulation
                                                              Salinity variations are driven by precipitation,
                                                              evaporation, runoff and ice freezing and melting

                                                                                                              5
                    Science Objectives and the need for Satellite
                                  Measurements
World Ocean Atlas                                       This diagram shows the sampling distribution of all the
                                                          historical surface salinity measurements
                                                        • The data are much too sparse to monitor salinity
                                                          variations over space and time.
                                                        • Systematic global mapping is required to study the
                                                          climatic interactions between the ocean and
                                                          atmosphere
                                                        • Science Requirements: Global coverage, 150 km
                                                          and monthly space/time resolution, 0.2 psu accuracy,
                                                          three year mission
   Science Objectives:
   • Determine the mean global surface salinity field, including vast under-sampled regions
   • Resolve the seasonal cycle
   • Track interannual variations linked to changes in the water cycle and ocean currents
   • Improve El Niño predictability
   • Reduce the large uncertainty in the marine hydrological budget and its variability
            • 86% of mean global evaporation and 78% of global precipitation occur over the ocean
   • Better initialize surface hydrology in climate models to improve climate prediction

                                                                                                      6
    Aquarius/SAC-D is designed to observe the global surface salinity field
            The Aquarius/SAC-D Salinity Mission
    for three years and to achieve a monthly accuracy that will resolve the
             seasonal and interannual variability at 150 km scales.

                                                     Sensitivity vs Radiometer
Approach:                                                    Frequency

• Integrated L-band ultra-stable                          Tb=εT
                                                          ε = f(S, T, Freq,
  microwave radiometer-radar, 3                           Incidence)
                                                           1400-1427 MHz
  fixed beams, 390 km wide swath, 7-                       Protected Band

  day repeat polar orbit
•     Monthly averages to reduce
      measurement noise and achieve 0.2
                                              WOA 2001

      psu RMS accuracy                       NOAA/NODC




•     Three year baseline mission to
      resolve seasonal to interannual
      variability and robust mean field
•     Independent calibration and
      validation from global in situ ocean
      observing system

                                                                                 7
Aquarius Instrument Block Diagram




                                    8
Aquarius/SACD System Overview
                                 Division of Responsibilities

•   Pre-Launch

     –   PI
           • Defines science requirements
     –   JPL
           • Scatterometer development
           • Project management
     –   CONAE
           • SAC-D spacecraft and ground system development
     –   GSFC
           • Radiometer development
           • Aquarius instrument data processing development
           • Aquarius instrument Mission Operations development

•   Post-Launch / Commissioning
     –   PI
           • Science management
     –   JPL
           • Ad-hoc support as requested by the PI
           • PO.DAAC archive and distribution of validated Aquarius data
     –   CONAE
           • SAC-D spacecraft and ground system operation
     –   GSFC
           • Project management
           • Aquarius instrument data processing, archive, distribution
           • Aquarius instrument Mission Operations

                                                                           10
                      NASA Ocean Biology Processing Group

• Located: Goddard Space Flight Center
• Total Archive size:                   332 TB
• Distribution (> 2/04):       27 million files
                                                          oceancolor.gsfc.nasa.gov

    Aquarius support is implemented within the
●

    framework and facilities of the current NASA
                                                   Consolidated data access,information
    Ocean Data Processing System (ODPS)             services and community feedback
    which has been successfully supporting
    operational, satellite-based remote-sensing
    missions since 1996, and its capabilities
    continue to evolve and expand to meet the
    demands and challenges of future missions


            ●MISSIONS SUPPORTED
•   SeaWiFS : 1997 - active
•   MODIS (Terra and Aqua) : 2000 - present
•   CZCS / Nimbus-7 : 1978 - 1986
•   OCTS / ADEOS-I : 1996 - 1997
•   Glory data system prototype : 2009 launch
•   Aquarius / SAC-D : May 2010 launch
•   VIIRS / NPP : June 2010 launch
•   Community Processing & Analysis Software                                         11
    SeaDAS (1991- present)
                                 Aquarius Ground System Responsibilities
       NASA Management: Oversight of the overall effort, communication/coordination with other NASA organizations and centers
       and CONAE; oversight of science support, algorithm integration, QC, validation and in situ data support.

       Contractor Management: Oversight of contract support staff, including hiring, tasking, review of deliverables and schedules.

       Mission Operations: Technical lead for instrument operations and commanding support; interface to instrument engineers
       and CONAE mission operations.

       Systems Engineering and Interface Definition: Technical lead for the data system effort; overall system design,
       implementation schedule, interface definition, data format specification, reviews and presentations.

       Software Engineering: Technical lead for the level conversion / product generation software, including development of the
       Level 0-to-1 software and integration/packaging of the science (Level 2 and 3) processing software to be provided by the
       algorithm developers.

       Software Development: Support for science code packaging, integration and testing.

       Data Systems Support: Integrate the product generation software into the existing automated processing system, develop
       ingest modules, develop database tables for archive products, develop schedules and recipes for data acquisition, production
       and migration.

       Systems Administration: Specify and acquire new processing and data storage hardware, integrate into existing data
       processing facility, verify/upgrade network capability for external data transfers.

       Quality Control and Validation: Working with the Science Team, develop methodologies, tools, procedures and reports for
       operational QC; specify data and develop algorithms and tools for data and science algorithm validation.

       In Situ Data Support: Work closely with the Aquarius Validation Data System (AVDS) to develop methods and tools for data
       analysis and quality control, building upon the existing SeaWiFS Bio-optical Archive and Storage System (SeaBASS).

       Archive and Distribution: Incorporate Aquarius product browse, search, order and distribution into existing web-based
       Ocean Color capability and work with JPL PO.DAAC regarding “institutional” archive support requirements.


Benefits of Discipline-based Processing - Pool of existing expertise at 10 cents on the dollar
                                                                                                                                      12
Aquarius Ground System Interfaces




    ADPS         ACCS
    Aquarius     Aquarius
    Data         Command &
    Processing   Control
    System       System




                                    13
Aquarius Ground System Interfaces

                                                        S-Band
                 CONAE                                           X-Band
                                                                               X-Band
                  Mission          RF
                  Operations       Services
                  Command
                  Center
                                              Cordoba
            Schedule           Aquarius
            Confirmation       Command
            And Reports        Schedules
                               And Reports
                                                                               Matera
    ADPS          ACCS
    Aquarius      Aquarius
    Data          Command &
    Processing    Control
    System        System




                                                                          14
                                         Aquarius Ground System Interfaces
                       S-Band

                                                                                                           S-Band

                                        Commands
                                                                    CONAE                                           X-Band
                                                                                                                                  X-Band
      Wallops Svalbard Alaska McMurdo   Real-Time                    Mission          RF
                                        Telemetry &                  Operations       Services
                                        Coordination                 Command
       NASA Ground Network
                                                                     Center
Vandenberg                                                                                       Cordoba
                                                               Schedule           Aquarius
                                                               Confirmation       Command
                                                               And Reports        Schedules
                                                                                  And Reports
                                                                                                                                  Matera
                                                       ADPS          ACCS
                                                       Aquarius      Aquarius
                                                       Data          Command &
                                                       Processing    Control
                                                       System        System




                                                                                                                             15
                                         Aquarius Ground System Interfaces
                       S-Band

                                                                                                                 S-Band

                                        Commands
                                                                    CONAE                                                         X-Band
                                                                                                                                                 X-Band
      Wallops Svalbard Alaska McMurdo   Real-Time                    Mission          RF
                                        Telemetry &                  Operations       Services
                                        Coordination                 Command
       NASA Ground Network
                                                                     Center
Vandenberg                                                                                             Cordoba
                                                               Schedule           Aquarius
                                                               Confirmation       Command
                                                               And Reports        Schedules
                                                                                  And Reports
                                                                                                                                                 Matera
                                                       ADPS          ACCS              Calibration &
                                                       Aquarius      Aquarius          Instrument        Principal Investigator            Instrument
                                                       Data          Command &                                    and                      Engineering
                                                       Processing    Control           Configuration    Science Planning Team                Team
                                                       System        System            Change
                                                                                       Requests




                                                                                                                                           16
Aquarius Ground System Interfaces

                                                   S-Band
                 CONAE                                      X-Band
                                                                          X-Band
    Data         Mission      RF
    Archive      Operations   Services
                 Command
                 Center
                                         Cordoba




                                                                          Matera
    ADPS         ACCS
    Aquarius     Aquarius
    Data         Command &
    Processing   Control
    System       System




                                                                     17
Aquarius Ground System Interfaces

                                                         S-Band
                 CONAE                                                  X-Band
                                                                                      X-Band
    Data         Mission      RF
    Archive      Operations   Services
                 Command
                 Center
                                            Cordoba

                                     3 - 5 downlinks / day


                                                                                      Matera
                                                    2 downlinks / day
    ADPS         ACCS
    Aquarius     Aquarius
    Data         Command &
    Processing   Control
    System       System




                                                                                 18
Aquarius Ground System Interfaces

                                            S-Band
                      CONAE                          X-Band
                                                                   X-Band
      Data
      Archive
      Pre-Processor

                                  Cordoba
    Aquarius
    Data and
    Telemetry

                                                                   Matera
      ADPS            ACCS
      Aquarius        Aquarius
      Data            Command &
      Processing      Control
      System          System




                                                              19
Aquarius Ground System Interfaces

                                            S-Band
                      CONAE                          X-Band
                                                                   X-Band
      Data
      Archive
      Pre-Processor

                                  Cordoba
    Aquarius
    Data and
    Telemetry

                                                                   Matera
      ADPS            ACCS
      Aquarius        Aquarius
      Data            Command &
      Processing      Control
      System          System




                                                              20
                 Aquarius Ground System Interfaces

                                                             S-Band
                                       CONAE                          X-Band
                                                                                    X-Band
                       Data
                       Archive
                       Pre-Processor

                                                   Cordoba
                     Aquarius
                     Data and
                     Telemetry

Ancillary Data                                                                      Matera
  Sources
                       ADPS            ACCS
                       Aquarius        Aquarius
                       Data            Command &
                       Processing      Control
                       System          System




                                                                               21
                          Aquarius Ground System Interfaces

                                                                             S-Band
                                                       CONAE                          X-Band
                                                                                                    X-Band
                                       Data
                                       Archive
                                       Pre-Processor

                                                                   Cordoba
                                     Aquarius
                                     Data and
                                     Telemetry

Ancillary Data                                                                                      Matera
  Sources
                                       ADPS            ACCS
                      Algorithms &     Aquarius        Aquarius
                      Science Code
                                       Data            Command &
   Science Team                        Processing      Control
        and                            System          System
                        Evaluation
Algorithm Providers
                        Products




                                                                                               22
                          Aquarius Ground System Interfaces

                                                                               S-Band
                                                         CONAE                          X-Band
                                                                                                      X-Band
                                         Data
                                         Archive
                                         Pre-Processor

                                                                     Cordoba
                                       Aquarius
                                       Data and
                                       Telemetry

Ancillary Data                                                                                        Matera
  Sources
                                         ADPS            ACCS
                      Algorithms &       Aquarius        Aquarius
                      Science Code
                                         Data            Command &
   Science Team                          Processing      Control
        and                              System          System
                        Evaluation
Algorithm Providers
                        Products


                         Insitu Data
AVDS
Aquarius Validation
Data System               Aquarius
                           Data




                                                                                                 23
                          Aquarius Ground System Interfaces

                                                                                             S-Band
                                                         CONAE                                        X-Band
                                                                                                                    X-Band
                                         Data
                                         Archive
                                         Pre-Processor

                                                                                   Cordoba
                                       Aquarius
                                       Data and
                                       Telemetry

Ancillary Data                                                                                                      Matera
  Sources
                                         ADPS              ACCS
                      Algorithms &       Aquarius          Aquarius
                      Science Code
                                         Data              Command &
   Science Team                          Processing        Control
        and                              System            System
                        Evaluation
Algorithm Providers
                        Products

                                                         Level-1 & Level-3
                         Insitu Data                     Aquarius Data
AVDS                                                                         PO.DAAC
Aquarius Validation
Data System               Aquarius
                           Data
                                                         Aquarius L1, 2, 3 Data
                                                         Ancillary Data
                                                         Feedback
                                                                          Data Users
                                                           Software          and
                                           SeaDAS                        Science Team

                                                                                                               24
                                          Aquarius Ground System Interfaces
                       S-Band

                                                                                                                         S-Band

                                         Commands
                                                                          CONAE                                                           X-Band
                                                                                                                                                         X-Band
      Wallops Svalbard Alaska McMurdo    Real-Time        Data              Mission           RF
                                         Telemetry &      Archive           Operations        Services
                                         Coordination                       Command
       NASA Ground Network                                Pre-Processor
                                                                            Center
Vandenberg                                                                                                     Cordoba
                                                        Aquarius    Schedule             Aquarius
                                                        Data and    Confirmation         Command
                                                        Telemetry   And Reports          Schedules
                                                                                         And Reports
             Ancillary Data                                                                                                                              Matera
               Sources
                                                          ADPS              ACCS               Calibration &
                                    Algorithms &          Aquarius          Aquarius
                                    Science Code                                               Instrument        Principal Investigator            Instrument
                                                          Data              Command &                                     and                      Engineering
                Science Team                              Processing        Control            Configuration    Science Planning Team                Team
                     and                                  System            System             Change
                                        Evaluation
             Algorithm Providers                                                               Requests
                                        Products

                                                                          Level-1 & Level-3
                                         Insitu Data                      Aquarius Data
              AVDS                                                                            PO.DAAC
              Aquarius Validation
              Data System                 Aquarius
                                           Data
                                                                          Aquarius L1, 2, 3 Data
                                                                          Ancillary Data
                                                                          Feedback
                                                                                           Data Users
                                                                            Software          and
                                                            SeaDAS                        Science Team

                                                                                                                                                   25
NASA Ground Network AQ/SACD Support
Ocean Biology Network and Information
         Technology Security
Aquarius Operations Concept

          Nominal
    Operations Concept for Achieving Science
                  Objectives
•   Orbit description
     –   Sun-synchronous, 6pm ascending node
     –   98 degree inclination
     –   657 +/- 1.5 km altitude
     –   7 day repeat track
•   Orbit maneuvers approximately every 28 days (delta V)
     – +/- 10 km box maintenance
     – Box tolerance expanded during solar max
     – Inclination maneuvers possible but not planned into the mission
•   Aquarius operated continuously
•   AQ Science data loss budget
     – 2.4 days per month (30.4 days)
     – Based on maintenance of 0.1 degree thermal stability for AQ
•   Optional Cold Sky Calibration Maneuvers
     – Estimated frequency of 1/month
     – Thermal transient expected to degrade science data for about 1 orbit

                                                                              29
          AQ/SACD Communications Links
• S-band 4kbps uplink
• S-band 4kbps downlink
   – Real time Housekeeping Telemetry (HKT)
   – 4000 byte frame
   – SAC-D, Aquarius and other instrument HKT (8 instruments total)
• X-band 16Mbps downlink
   –   Stored HKT; identical format to the real time HKT frame
   –   Stored science data for all instruments
   –   CCSDS
   –   Aquarius allocation is 4Mbps


                                                                  30
              Operations Ground Station Network
•   Primary station is CONAE’s ETC facility in Cordoba, Argentina
     – Aquarius requires a download at least once every 14 hours to avoid buffer overwrite
     – Single station provides approximately one d/l per 10 hours if both passes taken
          •   Orbit track typically takes AQ/SACD over ETC for two successive ascending passes and two successive
              descending passes.
     – One station outage (one “pass set”) results in data overwrite
•   Margin provided via the addition of a second X-band station
     – Italy’s ASI provides the Matera site
     – Global location is ideal for ETC backup;
          •   approximately 90 longitudinal degrees from Cordoba.
          •   Higher latitude offers 3 successive ascending or descending passes vs. ETC’s 2.
          •   Dual station outage now required to cause data loss.
          •   System supports use of all available Matera passes
•   ASI’s Malindi site in Kenya can be used for S-band downlink
     – Provides “first look” opportunity for launch vehicle separation, solar array deployment
•   NASA Ground Network S-band support
     – S-band uplink/downlink
     – Emergency support
     – Maneuver support
                                                                                                                    31
         Nominal Aquarius Commanding

• Nominal Aquarius commanding includes
   – Downlink commands
   – Possible software maintenace commands
   – Cold Sky Calibration targeting requests
• Possible Science commanding includes
   – Radiometer control commands
       • Normally runs as a state machine from on-board Look Up Table (LUT)
       • Science may request a change to a different LUT (7 pre-programmed, 1
         programmable)
   – Automatic thermal control system commands
       • Setpoint, Power, Integral, Derivative Parameter changes


                                                                                32
                        Cold Sky Calibration
• The Cold Sky Calibration is a pitch maneuver under the
  control of CONAE but requested by the Aquarius science
  team
   –   Purpose is to rotate Aquarius in the direction of cold space
   –   Specific cold location is selected by AQ science team
   –   Serves as an low temperature calibration point for the Radiometer
   –   Maneuver steps are to:
        • Pitch toward cold sky
        • Cold Sky dwell is planned to be approximately 1 minute
        • Pitch in the reverse direction back to earth pointing

• Maneuver occurs away from ground support
   – NGN provides pre- and post- look pass support

                                                                           33
                             Aquarius Downlink
•   Two Aquarius instruments:
     – Radiometer (primary)
     – Scatterometer (ancillary)
•   Support subsystems:
     –   Automatic Thermal Control
     –   Power Distribution Unit
     –   Instrument Command and Data Subsystem (ICDS)
     –   Antenna, feeds and structure
•   All subsystems forward science and HKT in fixed formats to the ICDS
•   ICDS packages HKT and science every 1.44 seconds
     –   Stored in the ICDS RAD6000 RAM
     –   110 MB of storage capacity
     –   d/l command downloads buffer in circular fashion until stop cmd received
     –   Passed through CCSDS formatter and on to X-band transmitter
•   ICDS packages HKT and software messages in packetized form (vs. fixed format)
    every 8 seconds.
     –   500 bytes
     –   Passed to SACD and inserted into 4000 byte frame
     –   Stored in SACD Mass Memory
     –   When S-band transmitter is on, data is also sent to the ground in real time
                                                                                       34
High Level Description: Aquarius Command
             Planning Cycle
• Aquarius operations:
   – prepares two weeks of command loads each week
   – Forwards commands to the Planning System at ETC
   – Receives acknowledgement report that they were accepted as
     feasible or not
• Approximately one week is available for changes
• Then Observatory planning cycle is entered
   – Aquarius commands are incorporated into SACD and other
     instrument command plans
   – Final plan is reported back to Aquarius operations
• Plan is uploaded with any duplicate commands deleted

                                                                  35
Aquarius Operations Concept

          Anomaly
               Anomaly Resolution Process
• Process developed jointly by JPL, GSFC, CONAE Operations Assurance
• In flight, the anomaly process is led by CONAE.
• Process is captured in SACD document: SD-2510-0062, SAC-D FLIGHT
  ANOMALY REPORTING PROCEDURE
    – Please note that the Science Operations Control Board (SOCB) in Aquarius
      documentation equates to the SACD Flight Anomaly Review Board (SAFARB)
      in CONAE documentation.
• Instrument anomalies will be resolved by Aquarius team with process still
  led by CONAE
• Process:
   – Notify management (CONAE, then instrument)
   – Establish a resolution team led by a control board
   – Resolve the anomaly under control board authority
        • Teams will rely on AQ and SACD testbeds to create and test
          problems and scripts
   – Report the anomaly via the CONAE Flight Anomaly Report (FAR)
      system
• The Goddard Flight team will also file detailed Aquarius instrument
  anomaly reports on the Goddard reporting system. Aquarius reports will be
  sharable with JPL.                                                    37
                    SAC-D Instrument
                    Ops Team
                                Report anomaly




                                                                                   SAC-D
                                                                  Report anomaly
 Other data
               Report anomaly
                                                                                   Ops
 observer                                                                          Team

                                                 Report anomaly




                                             Aquarius
                                             Ops Team

Any anomaly observer(s) immediately report the detected ground or
Observatory problem to the Mission Operations Manager (MOM)                                38
           Gathers CONAE             2     Based on analysis result,
           analysis team to                MOM selects an
           identify problem                anomaly resolution team
           source
                                        3
             1a                May require AQ or
                               3rd party instrument
                               support; obtain via
              1b               SOCB
                                             Each SOCB
        Notifies Science     4               member alerts his
        Operations Control                   system team and
        Board of the anomaly                 selects anomaly
                                             resolution team
MOM initiates anomaly response and           members as needed
notification to formulate response team                          39
                Status to                  Status to
                teams             SOCB     teams

                                         Anomaly
                      Cmd Plan           resolution
                      execution          plan
                      reports            approval
                      (status
                      reports)

Anomaly                                               Command
                Command                               plans
resolution      plans                                                Ops
team                                                                 Team
              Observed                                Observed
              telemetry                               telemetry
              changes and                             changes and
              observations                            observations

                                          MOM manages anomaly
                                          resolution process with
    Feedback to MOM; “fix worked” or
                                          support of SOCB
    “more to be done” or “need more
    help”, etc                                                              40
                            SOCB/CONAE              Aquarius Final Report
                                                    to GSFC Anomaly
                                                    tracking system if
                                                    appropriate
                     Anomaly
                     notes and       Final
                     logs
                                     Report
Anomaly
resolution                                                        Ops
team         Anomaly                          Anomaly
                                                                  Team
             notes and                        notes and
             logs                             logs


         MOM generates and distributes final report; Aquarius
         anomalies may require an additional, separate report filed
         at GSFC by AQ GS


                                                                            41
Aquarius Command and Control
        Requirements
         ACCS Requirements, Verification and
                Validation Matrix

ID            (AQ) G. Feldman                      Verification Method   Test ID

L3-AQ-f-148   Requirement: The Aquarius            Demonstration         Test 1; include in ACCS
              Command and Control Segment                                operations procedures
              shall review CONAE Operations
              Reports to verify that Aquarius
              command scripts are transmitted to
              the Observatory as planned.
L3-AQ-f-76    Requirement: The complete data       Analysis              As captured in the stated
              file sharing interface between the                         ICD.
              SAC-D MOCC and the AQ GS
              ADPS shall be defined in the
              Aquarius Ground System Interface
              Control Document.
L3-AQ-f-78    Requirement: The Aquarius            Demonstration         Tests 1, 2
              Command and Control Segment
              shall generate Aquarius instrument
              commands plans on the SAC-D
              MOC Scheduler using Aquarius
              commands and scripts stored on
              the CONAE database as defined in
              the SAC-D Ground to Aquarius
              Ground System ICD.
                                                                                              43
             ACCS Requirements, Verification and
                    Validation Matrix
L3-AQ-f-146     Requirement: The Aquarius            Analysis, Demonstration   Analysis as captured in
                    Command and Control                                              AQ GS operations
                                                                                     procedures and
                    Segment shall deliver to the                                     processes.
                    SACD Ground System on an                                         Demonstration via
                    on-going basis for the life of                                   tests 1, 2.
                    the Aquarius mission the most
                    recent approved versions of
                    all Aquarius command scripts,
                    telemetry scripts, telemetry
                    pages, standard operating
                    procedures and contingency
                    operating procedures
                    necessary for the ETC flight
                    operations team to control and
                    monitor the Aquarius
                    instrument during real-time
                    operations.
L3-AQ-f-85      Requirement: The Aquarius            Demonstration             Test a, k, m
                    Command and Control
                    Segment shall monitor
                    Aquarius instrument health
                    and status by displaying and
                    trending: instrument high rate
                    science data; stored Aquarius
                    House Keeping Telemetry;
                    and selected SACD House
                    Keeping Telemetry.
                                                                                                   44
        ACCS Requirements, Verification and
               Validation Matrix
L3-AQ-f-86   Requirement: The Aquarius               Demonstration   Tests a, k, m
                 Command and Control
                 Segment shall monitor
                 Aquarius instrument telemetry
                 limits and generate indications
                 of out of limits conditions such
                 as audible alarms, printouts,
                 or highlighted values on
                 displays.
L3-AQ-f-96   Requirement: The Aquarius               Analysis        Ensure these
                 Ground System shall generate                             procedures are
                                                                          included in the AQ
                 procedures for the test,                                 GS operations
                 validation via the Aquarius                              procedure set.
                 test-bed, and upload of
                 instrument software patches
                 via the CONAE MOC.
L3-AQ-f-99   Requirement: The Aquarius               Demonstration   Test l
                 Command and Control
                 Segment shall have the
                 capability of validating all real
                 time commands to the
                 Aquarius instrument on the
                 Aquarius test-bed.
                                                                                         45
        ACCS Requirements, Verification and
               Validation Matrix
L3-AQ-f-100   Requirement: The Aquarius             Analysis   As captured in ACCS
                  Command and Control                               operations
                                                                    processes
                  Segment shall submit all real-
                  time command procedures not
                  previously approved to the
                  Science Operations Board for
                  approval.
L3-AQ-f-131   Requirement: The Aquarius             Analysis   As captured in ACCS
                  Command and Control                               operations
                                                                    processes and
                  Segment shall document and                        procedures
                  place under configuration
                  control all commands, scripts,
                  flight software patches, and
                  procedures that have been
                  approved by the Science
                  Operations Control Board.
L3-AQ-f-111   Requirement: The ADPS shall           Analysis   Ensure adequate
                  support the archive of the full                   storage exists
                                                                    (analysis
                  Aquarius mission data set                         completed)
                  including science, ancillary,
                  and housekeeping telemetry
                  data.
                                                                                     46
        ACCS Requirements, Verification and
               Validation Matrix
L3-AQ-f-136   Requirement: The Aquarius           Analysis   Completion of the AQ
                  Ground System shall be                         GS V&V matrix.
                  designed to be testable and
                  verifiable consistent with
                  mission test and verification
                  plans.



L3-AQ-f-152   Requirement: The Aquarius           Analysis   Receive size and
                  Ground System shall provide                     environment
                                                                  specifications from
                  a physical location for the                     JPL and establish
                  Aquarius Testbed that                           a space that
                  accommodates the size,                          accommodates
                  power, cleanliness, and                         those.
                  thermal environment specified
                  by the JPL Testbed team.




                                                                                  47
    ACCS Gold Rules Compliance Matrix

• Initial Gold Rules Compliance Matrix was generated in
  May, 2005
• Basis was the 12/10/04 release
• Verified full compliance; no waivers required
• Reviewed again by Steve Scott and David Durham
  (Aquarius Mission System Engineer) in 2008. Compliance
  verified.




                                                       48
ACCS Documents
                          ACCS Documentation
•   L3 Aquarius Ground System and Test Requirements
     – AQ-328-0162
     – Final version available for distribution
•   Aquarius Ground System Integration, Test and Training Plan
     – AQ-336-0244
     – Final version available for distribution
•   Project Service Level Agreement
     – 451-PSLA-SACD
     – Final version available for distribution
•   Aquarius Operations Processes and Procedures
     – Future document
•   ACCS elements of the Aquarius Ground System to Science Team ICD
     – Future document; draft state
•   AQ GS – SACD GS ICD is a CONAE document
     – Most recent version available for distribution. Final version due 4/18/08
•   Aquarius/SACD Mission Plan is a CONAE document
     – Final version available for distribution
•   Aquarius/SACD Flight Anomaly Reporting Procedure is a CONAE document.
     – Most recent version available for distribution. Final version due 4/18/08.
                                                                                    50
             ACCS Configuration Management
• Ocean Biology Configuration Control via Subversion CM Tool
• All ACCS code and documentation under CM
    –   Command and telemetry scripts
    –   Executables (CONAE tools)
    –   Processes and procedures
    –   Instrument team receivable documents
• Subversion offers web-based access
    –   supports shared configuration control of selected files with SACD
    –   AQ command and telemetry dictionaries
    –   AQ/SACD telemetry scripts and pages
    –   CONAE procedures for AQ operations
• Subversion CM structure has been built and populated with
  preliminary documents


                                                                            51
Aquarius Command and Control Design
         AQ/SACD Ground System Overview
                                                         4kbps uplink Sband
                               observatory               4kbps downlink Sband
                                                         16Mbps downlink Xband


                   CGSS                        FGSS
                   CONAE Ground                Foreign Ground
CODS               System Services             System Services

CONAE Orbit
Dynamics Service    FC                                            SOC
                    Flight Control Subsystem                      Spacecraft Operations
                                                                  Center

                                                         SOP
                                                         Spacecraft Operations
                             FUSS                        Planning

                             Foreign User
                             Segment Services
                                                                                    53
                   AQ/SACD GS Uplink Data Flow
                   Nominal cmd path
                                         observatory        4kbps uplink Sband
                   Alt/Emerg cmd path
                                               RF
ARs   Action Requests      CGSS                        FGSS
                           CONAE Ground                Foreign Ground
                           System Services             System Services

                                        Command frames

                           FC                               Pass plans      SOC
CODS                                                          reports       Spacecraft Operations
                           Flight Control Subsystem
CONAE Orbit                                                                 Center
Dynamics Service
                                                                                          reports
                                                                 SOP
                                                                                          Pass plans
                                                                 Spacecraft Operations
                                        FUSS                     Planning
                                                            Reports / ARs
                                        Foreign User
                                        Segment
                                        Services                                              54
   AQ/SACD GS Low Rate Downlink Data Flow
             Nominal 4kbps d/l path
                                       observatory             4kbps downlink Sband
             Emerg. 4kbps d/l path
                                             RF
                         CGSS                        FGSS
                         CONAE Ground                Foreign Ground
                         System Services             System Services
CODS                                        RT Tlm

CONAE Orbit                  FC
Dynamics Service                                                         SOC
                             Flight Control Subsystem     RT EU
                                                          Tlm            Spacecraft Operations
                                                                         Center
              RT GPS / AOCS
              Tlm
                                                               SOP
                                      FUSS                     Spacecraft
           Orbit Files                                         Operations Planning
                                      Foreign User
                                      Segment
                                      Services                     RT EU Tlm Files         55
    AQ/SACD GS High Rate Downlink Data Flow
             Nominal 16Mbps d/l
             path                   observatory             16Mbps downlink Xband

                                           RF
                       CGSS                         FGSS
                       CONAE Ground               Foreign Ground
                       System Services            System Services
                                         Stored Data

                         FC                                          SOC
CODS                                                   Stored
                         Flight Control Subsystem                    Spacecraft Operations
CONAE Orbit                                            Data
                                                                     Center
Dynamics Service
                        Stored GPS / AOCS Tlm
                                                            SOP
                                  FUSS                      Spacecraft
                                                            Operations Planning
                                  Foreign User
                                  Segment
                                  Services                      Stored Science and     56
                                                                AQ/SACD HKT Files
                       AQ GS Overview I

CODS                                                      SOC
CONAE Orbit                 Emergency Voice, Email, Fax   Spacecraft Operations
Dynamics Service                                          Center




                                          Action
                                                      SOP
                                          requests    Spacecraft
                        FUSS               reports
                                                      Planning Center
         Orbit Files
                        Foreign User
                        Segment
                        Services               RT, Stored Data Files




                                                                             57
                        AQ GS Overview II
CODS
                                                           Emergency Voice, Email, Fax
CONAE Orbit             SOC
Dynamics Service
                        Spacecraft Operations Center


                              Science, HKT
                              Files                          SOP
         Orbit Files                                         Spacecraft
                             ADPP                            Operations Planning

                             Aquarius Data                            Action requests
CONAE                        Pre-processor


NASA                   Science, HKT, Orbit Files            reports     FUSS
                        ADPS                                      ACCS
                                             Science, HKT Files
                        Aquarius Data                             Aquarius
                        Processing                                Command and
                        System                                    Control System        58
                      Uplink Interfaces, Data Flow
observatory
  RF cmds
  RF cmd ack
                                              SOC                           SOP
CGSS    Cmd Frames     FC        Pass Plans                   Pass Plans
                                                                            Spacecraft
                                              Spacecraft                    Operations
            cmd ack    Flight                 Operations       reports
                                 Cmd logs                                   Planning
                       Control                Center


                                                                            Action
                                                                            requests
CONAE

NASA
                                                           ACCS
                                                           Aquarius
                                                           Command and          reports
                                                           Control System                59
        ACCS Uplink Tools and Actions

                 SOP
                 Spacecraft Operations
                 Planning




                                Action requests
                                • commands
                                • targeting
CONAE

NASA
                    ACCS
                     SInter
                     Scheduler Client

                                                  60
                                 SInter

• SInter (Spacecraft Interpreter), a CONAE deliverable command
  scripting tool
• SInter example script (next slide)
• SInter used pre-flight
    – to command the instrument during I&T
    – to populate CONAE “Basic Commands” database
    – All Aquarius Basic Commands have been created and run successfully
      against the instrument computer (ICDS)
• SInter used during flight against the Aquarius testbed
    – for science change scripting
    – for anomaly resolution scripting
• Software executables and scripts are maintained under CM
                                                                           61
Example SInter Command Script
scl AQ::S_FOL_mode(integer: beam)
require
  beamValues: beam >0 && beam < 4;

description
-- beam_select: beam1=1, beam2=2, beam3=3

local
  bytes : OpCode,Param,chksum;

{
    OpCode = Integer.AsShort(24577 );
    Param = Integer.AsShort(beam );
    chksum = (OpCode^Param);
    aqsd.cmd.aq( OpCode + Param + chksum );

}
                                              62
                         Scheduler Client

•   A CONAE deliverable
•   GUI that supports Spacecraft Operations Planning
•   Resides on the ACCS
•   Interfaces with the CONAE Spacecraft Operations
    Planning system
    – Action Requests trigger CONAE planning activities
    – For Aquarius, these are
        • Aquarius commands
        • Aquarius Flight software patches (potential)
        • Aquarius targeting (cold sky calibration) via Observatory maneuver



                                                                               63
                       Action Requests
 Generated via the ACCS Scheduler Client (CONAE)
 Sends to SOP via TCP/IP+HTTPS (ACCS-SOC_AR interface )
 Checks Feasibility
 An individual Action Request includes:
 scl basic commands
 command parameters
 desired execution times
 preconditions for execution
 Action Requests support:
 commands
 flight software patch uploads
 cold sky targeting (wide system action)

                                                           64
                          Action Requests
• Generated via the ACCS Scheduler Client (CONAE)
    – sends to SOP via TCP/IP+HTTPS (ACCS-SOC_AR interface )
    – checks Feasibility
• An individual Action Request includes:
    –   scl basic commands
    –   command parameters
    –   desired execution times
    –   preconditions for execution
• Action Requests support:
    – commands
    – flight software patch uploads
    – cold sky targeting (wide system action)

                                                               65
          Command Process




Example Only
                            66
             Flight Software Patch Process

•   Patch purpose: anomaly resolution
•   JPL responsible for designing and bench testing patch
•   ACCS responsible for operational testing against test bed
•   Science Operations Control Board approves patch activity
•   All patches are formatted as a sequence of Aquarius commands
•   Nominal Action Request process followed
•   Can be uploaded in realtime or as time-tagged cmds
•   Other commands can be interspersed
•   Aquarius provides notification of complete receipt of patch
•   Flight operations executes final “install” command in real time


                                                                      67
                Flight Software Patch Sequence
•   I_module_start
     –   identifies the component ID to be patched
     –   ID inherently specifies whether patch is new or replacement s/w
     –   tells the FSW how many commands make up the patch
     –   Automatically aborts any patch in progress
•   I_module_part
     – One to many 60 byte commands containing patch data and a sequence number
•   I_fragment
     – One or more patch commands of 58 bytes or fewer
•   I_module_end
     – Contains patch checksum
     – Receipt causes instrument to verify all patch commands received
     – Sends messages to ground containing any missing patch sequence numbers
           •   Ground may send missing data, then re-issue I_module_end
     – If all commands received, instrument computes checksum
           •   Failed checksum forces discard of patch
           •   “Failed” message inserted into HKT
           •   Otherwise a “success” message is sent in HKT
•   I_install_patch
     – Sent in real-time once successful I_module_end is confirmed
     – Includes component ID that must match the I_module_start component ID
                                                                                  68
           Cold Sky Calibration Process

• Primarily a CONAE task requested by the Aquarius
  Science team
• Science team places request through the ACCS (TBD
  format)
   – Observatory targeting information provided
• SCI-ACCS restricted access email account utilized as the
  interface between science team and ACCS
• ACCS submits “Wide System Action” AR via the
  Scheduler Client, specifying cold sky maneuver and target.


                                                          69
                   Downlink Interfaces, Data Flow
CODS
CONAE Orbit                                                SOP
Dynamics Service
                                                           Spacecraft Operations
                                                           Planning


                                                  SOC
         Orbit Files      RT, Stored Data Files
                                                  Spacecraft
                          ADPP                    Operations Center

                          Aquarius Data
CONAE                     Pre-processor


NASA                                                                  Action
                                                                      requests
                          ADPS                      ACCS
                          Aquarius Data             Aquarius
                          Processing                Command and          reports
                          System                    Control System               70
                   Aquarius Downlink Data
                                RT, Stored   SOC
                                Data Files
     Orbit Files                             Spacecraft
                     ADPP                    Operations Center

                     Aquarius Data
                     Pre-processor

                                                                  CONAE
Observatory RT HKT files
Observatory ST HKT files
Aquarius Science Files, time
sorted, duplicates deleted                                          NASA
Orbit Files                            Observatory RT HKT files
                                       Observatory ST HKT files   ACCS
                      ADPS             Aquarius Science Files
                      Aquarius Data                               Aquarius
                      Processing                                  Command and
                      System                                      Control System

                                                                              71
        Aquarius Data Pre-processor (ADPP)

                                 RT, Stored   SOC
                                 Data Files
         Orbit Files                          Spacecraft
                       ADPP                   Operations Center

                       Aquarius Data
CONAE                  Pre-processor


NASA



                       ADPS                      ACCS
                       Aquarius Data             Aquarius
                       Processing                Command and
                       System                    Control System   72
         Aquarius Data Pre-processor (ADPP)
•   Purpose: to reduce bandwidth requirement
     – Unable to test the actual link until new MOC is installed
     – Initial testing provides baseline but no sure metrics
•   Two ADPP systems placed at CONAE
     –   Incoming data archived to both
     –   Data fetched by ADPS from only primary ADPP
     –   Configuration and scripting controlled by Goddard
     –   Physical maintenance (if any) performed by CONAE
     –   Sized to accommodate the entire mission, all file types, with margin
•   ADPP retrieves orbit files from CODS
     – SFTP “pull”
•   Retrieves Real time Observatory HKT files from SOC
     – SFTP “pull”
     – 4000 byte frames sent via S-band link
     – Frames contain SACD, Aquarius, and other instrument HKT
•   Retrieves Stored Observatory HKT files from SOC
•   Retrieves Aquarius science files from SOC
     – Time sorts data
     – Deletes duplicates

                                                                                73
        Aquarius Data Processing System

                                RT, Stored   SOC
                                Data Files
        Orbit Files                          Spacecraft
                      ADPP                   Operations Center

                      Aquarius Data
CONAE                 Pre-processor


NASA

                                                ACCS
                                                 Telemetry
                      ADPS                       Viewer
                      Aquarius Data              Analysis
                      Processing                 Software
                      System                                     74
        Aquarius Data Processing System

• Part of the Ocean Biology Processing System
• ADPS support for the ACCS includes:
   – Archive of all mission data including all HKT, science and orbit
     files
   – Forwards HKT files to the ACCS Telemetry Viewer tool
       • Sole source of Aquarius software messages
       • Duplicates HKT stored in science files, but at lower sampling rate
   – Provides science and HKT file access to the Aquarius analysis
     tools




                                                                              75
                ACCS Telemetry Viewer

                                RT, Stored   SOC
                                Data Files
        Orbit Files                          Spacecraft
                      ADPP                   Operations Center

                      Aquarius Data
CONAE                 Pre-processor


NASA

                                                ACCS
                                                 Telemetry
                      ADPS                       Viewer
                      Aquarius Data              Analysis
                      Processing                 Software
                      System                                     76
              ACCS Telemetry Viewer

• CONAE deliverable
• Purpose is to:
   – Be able to provide Aquarius telemetry viewing tools to CONAE
   – Be able to view data exactly as CONAE does to support discussion
     of observations, anomaly diagnosis and resolution, etc.




                                                                   77
Example Telemetry Viewer Script
tsl Tlmy::AQ.EXT_Temps_OMT1_Hprobe_Temp.Raw()
return bytes : out
label
-- AQ.EXT_Temps_OMT1_Hprobe_Temp.Raw
require
    -- The script can be executed if a new 'AQ.Mechanical_Thermal.Message' arrived.
    MessageArrived: AQ.Mechanical_Thermal.Message != <hex\ >;
description
-- raw AQ.EXT_Temps_OMT1_Hprobe_Temp
{
    out = bytes.extract(AQ.Mechanical_Thermal.Message, 0,1);
}
(Show file)




                                                                                      78
                ACCS Analysis Software

                                RT, Stored   SOC
                                Data Files
        Orbit Files                          Spacecraft
                      ADPP                   Operations Center

                      Aquarius Data
CONAE                 Pre-processor


NASA

                                                ACCS
                                                 Telemetry
                      ADPS                       Viewer
                      Aquarius Data              Analysis
                      Processing                 Software
                      System                                     79
               ACCS Analysis Software
• Based on the Radiometer FM I&T Analysis tools developed
  at Goddard
• Development plan:
   – Expand tools to include remaining instrument data
   – Convert tools from Windows to Linux OS
   – Investigating whether to convert tools from Matlab to IDL
   – Include processing capability for HKT and ancillary data
   – Mimic existing Ocean Biology web tools: Generate daily and long-
     term graphs; investigate creating mid-resolution graphs
   – Post graphs to the Web via existing Ocean Biology tools
   – Provide existing interactive capability from local machine(s)

                                                                    80
               ACCS Hardware and Link Analyses
•   Analysis showed that the following requirements apply to the ACCS computer:
     – Ultra-secure network connections to CONAE and the ADPS (Windows OS)
     – Disk storage: 64 MB
           •   Executables
           •   Command and telemetry scripts, pages (custom elements)
           •   Working files (playback data)
           •   Applies 100% margin
     – RAM: 250 MB
           •   Assessed by examining handle, thread, and process statistics with tools in use, especially at start-up
           •   Extracted from basis of test computer providing 504 MB RAM
     – Processing speed: 1.5 GHz
           •   Assessed by examining CPU usage statistics while tools were active, especially at start-up
           •   Tools were run on 1.5 GHz processor and demonstrated startup usage of 33% and post-start-up of 8% or less

•   Specifications of existing ACCS hardware:
     – Disk storage: 255 GB
     – RAM: 2 GB
     – Processing speed: 3.01 GHz
•   Link test results with CONAE
     –   10 day link test; SAC-C vs. SAC-D link
     –   87% success rate; transfers also under 12 minutes for 550 MB file (approx AQ fileset size)
     –   15% of total transferred but with very slow rates (~ 2 – 3 hours)
     –   ADPP employed to increase margin
     –   Examining alternate network options
     –   True testing delayed until MOC upgrade in 2008                                    81
Aquarius Test Bed
              Aquarius Test Bed Requirements

•   Information: The AQ Flight Operations Testbed is a tool to investigate and recover from AQ
    anomalies, test unapproved command sequences and operations procedures, and validate FSW code
    uploads
•   Requirement: All elements of the AQ flight instrument shall be replicated or simulated within the AQ
    Testbed
•   Requirement: All elements of the AQ Testbed shall provide flight like telemetry and science
    responses to commands.
•   Requirement: The ADPU element shall provide flight-like power levels to the Testbed.
•   Requirement: The ICDS element shall provide flight-like Scatterometer science processing, ATC
    control, DPU communications, ground command handling, FSW upload capability, HKT handling
    and science packet handling.
•   Requirement: The Testbed command and telemetry tools shall be identical to the Operational tools.
•   Requirement: The Testbed command and telemetry tools shall interface with the AQ instrument via a
    SAC-D simulator.
•   Information: The SAC-D simulator emulates the SAC-D Command and Data Handling System, the
    1553 bus, the GPS 1PPS signal and interfaces to both the SAC-D command and telemetry tools and
    the AQ instrument portion of the Testbed.


                                                                                                     83
          Command and Data Test-bed
Aquarius Command and Data Test-bed
(at GSFE after commissioning phase is complete. Before that: at JPL)
          SAC-D                       S/P
          Cmd/Tlm                     Simulator
          Tools
                                                                                  •The main goal of the Command
                           1553          1553                                     and Data Test-bed is to verify
                                                  1pp
                           sniffer       Cmds/    s                               commands are scripted correctly
    High-rate data                       HKTs
                        4Mbps                         Cmds/timing
    downlink sync       High-rate data ICDS full BB
                                                                                  to be accepted by the instrument
                                                                     DPU
    and storage                                          Sci/telem                and echoed back properly in
                                           sADC                      interface
     Command/TLM/High-
                                                                     Simulator    telemetry.
                                                       cmd
     rate data software tools                          s
                                                                    SCAT          •If possible, EM DPU will be used
                                                    telem         interface
                                                                                  instead of DPU simulator. This
                                                                  Simulator
                       Generic Reference
                                                                                  would interconnect the two test
                       clock and power                     Thermal/deployment     beds segments shown here.
                       supplies                             telemetry Simulator   •If a FSW patch is needed, it will
                                                                                  be tested in a software test-bed
                                                                                  first and then in the Command and
 Radiometer Engineering Test-bed (at GSFC)                                        Data Test-bed.
                                                      Radiometer RF
  ICDS               Cmds/timing DPU      Cmds/timing EMs:
  Simulator             HKT                Sci/telem RBE
  BCE & PC                       (EM)                 RFE
                       science
                                                      CND
                    Test Bed Limitations
• Ideal test bed perfectly replicates Observatory and space
  environment
• Limitations
   – No vacuum, no radiation, no orbital variations, no seasonal variations
     simulated
   – Only Radiometer offers some thermally controlled elements
   – Aquarius and Observatory testbeds are not interconnected
   – Aquarius provides no antenna, feed, or structure elements
   – Scatterometer breadboard is not included
   – Going in plan does not integrate Radiometer and ICDS elements
   – Radiometer is single (vs. triple) string and DPU is EM, not FM version
   – Radiometer FM hardware updates not applied to EM
   – Aquarius Power Distribution Unit is entirely replaced by power supplies
   – No temperature sensors or support software included in the Automatic
     Thermal Control portion of the test bed
                                                                      85
                        Test Bed Capabilities
• Capabilities
   – ICDS test bed provides
       • Full Scatterometer processing
       • Scatterometer simulator for RF elements is included
       • Full flight-like command and telemetry response, although with nearly all simulated
         inputs and feedback
   – Radiometer test bed provides
       • Limited RF targets may be available
       • DPU software updates to match FM may be possible; to be investigated
       • Investigating the integration of the ICDS and Radiometer test bed elements
   – If Radiometer EM integration is successful
       • inputs and feedback will be very flight-like, within stated limitations




                                                                                      86
ACCS Test Plan
                           ACCS Test Plan
• Purpose:
   – Verify the Aquarius Ground System Level 3 Requirements
   – Describe the plan for integrating and testing Aquarius Ground System
     segments
   – Describe the plan for integrating and testing the Aquarius Ground System with
     the SACD Ground System
   – Describe the training plan for Aquarius Ground System operators.
• Test approach
   – Ensure that AQ GS test objectives are met in a twofold fashion.
      • Perform standard component and system level tests that verify Level 3
        requirements. (Verification)
       • Simulate full operations on a daily basis for at least one year prior to
         launch. (Validation) This extensive testing will support:
             – Stressing the system
             – rehearsing anomaly detection and response
             – iterative optimization of science data processing algorithms.
                                                                                    88
                                  Test Process
• Analyze Level 3 requirements that will be verified and then map them into
  test categories.
• Develop the Test Cases including test procedures.
• Conduct peer review of Test Cases and Test Procedures.
• Prepare for tests:
    – Verify that the pertinent subsystem tests have been completed successfully
    – Verify that the appropriate test data is prepared. Generate if necessary.
• Coordinate and execute testing for each major AQ GS component including
  relevant regression testing.
• Test execution takes place on the day of the test and includes:
    –   Verification of participants, locations, test preparations, etc.
    –   Startup procedures
    –   Execution of the Test (step-by-step)
    –   Close-down procedures
• Debriefing: review and document test results and anomalies

                                                                               89
                 Full Ground System Test List
•   Segment Tests:
•   ACCS Acceptance Test
•   ADPP Acceptance Test
•   ACCS-ADPS Interface Test
•   ADPP-ADPS Interface Test
•   ADPS Level 0 to 1A Processing Test
•   ADPS Level 1 Algorithm Test
•   ADPS Level 2 Algorithm Test
•   ADPS Level 3 Algorithm Test
•   ADPS Retrieval, Scheduling and Archiving Test
•   SACD SOC-ADPP-ADPS File Exchange Tests
•   ACCS Command and telemetry verification (against test-bed)
•   ACCS Script verification (against test-bed)
•   Ocean Biology Processing Web Based Telemetry Tools Test
•   PO.DAAC interface test
•   ADPS – AVDS interface test
•   System Tests:
•   SACD MOC-ADPP-ADPS-ACCS End to End Test
•   Mission Scenarios/Operational Readiness Test with CONAE
•   Mission End to End Test

Tests involving the ACCS

                                                                 90
     Ground System End to End Test Setup

• SACD MOC-ADPP-ADPS-ACCS End to End Test
  configuration is identical to flight
• This configuration will be presented in detail later in this
  slide set




                                                                 91
      Operational Readiness Test System
                Configuration
• Replaces the Observatory with the Observatory Test Bed
• Observatory Test Bed is housed at the CONAE ground
  station
• Test Bed is controlled and monitored locally vs via the
  Flight Control system
• Command and Data files must be manually transferred to
  and from Aquarius Ground System
• This is adequate for Aquarius Ground System purposes in
  that we have no real-time control of Aquarius


                                                            92
Mission End to End Test Setup




                                93
                      ACCS Training Plan
•   Aquarius Science, Instrument and Ground System Overview
    –   In-house document that describes the mission elements from an
        operations perspective
•   ACCS User's Guide
    –   Generally an assembly of CONAE deliverables
    –   Supplemented by in-house training information
•   Aquarius Operations Handbook
    –   Policies, Processes and Procedures
•   Mission Scenarios
    –   Participation for operators already on board
    –   Documented results for operators hired afterward
•   Aquarius Test-Bed
    –   Training scenarios
•   Certification


                                                                        94
ACCS Schedule




                95
ACCS Risks
                         ACCS Risks

• Impacts of CONAE MOC redesign
   – AQ GS – SAC-D GS testing delayed until Feb ’09
   – Any needed redesign and retest likewise delayed
   – Mitigation: Fall back to SAC-C design
• Effectiveness of the Aquarius Test Bed for Analyzing and
  Resolving Anomalies
   – Lack of total interconnectivity of elements (including Observatory
     test bed)
   – Limited ability to simulate thermal environment and sensing for a
     very thermally sensitive instrument
   – Mitigation: Risk is being accepted by the project

                                                                      97
Acronym List
                       Acronym List, A - E
ACCS     Aquarius Command and Control System
ADC      Analog to Digital Converter
ADPP     Aquarius Data Pre-Processor
ADPS     Aquarius Data Processing System
AOCS     Attitude and Orbit Control System (Observatory)
APDU     Aquarius Power Distribution Unit
AQ       Aquarius
AQ GS    Aquarius Ground System
AR       Action Request
ASI      Agenzia Spaziale Italiana
ATC      Automatic Thermal Control
BB       Breadboard
BCE      Board Control Electronics
CCSDS    Consultative Committee for Space Data Systems
CM       Configuration Management
CGSS     CONAE Ground System Services
CND      Correlated Noise Diode
CODS     CONAE Orbit Determination System
CONAE    Comision National de Actividades Espaciales
CPU      Central Processing Unit
CUGSS    CONAE User Ground System Services
CUSS     CONAE User Segment Services
DeltaV   Delta Velocity – an in-track orbit adjustment maneuver
d/l      downlink, download
DPU      Digital Processing Unit (Radiometer)
EM       Engineering Model
                                                                                99
ETC      Estacion Tierra Cordoba (CONAE Ground Station in Cordoba, Argentina)
                     Acronym List, F - N
FC     Flight Control (CONAE)
FGSS   Foreign Ground System Services (CONAE)
FM     Flight Model
FSW    Flight Software
FUSS   Foreign User Segment Services (CONAE ground system acronym)
GHz    Gigahertz
GPS    Global Positioning System
GS     GroundSystem
GSE    Ground System Equipment
HKT    Housekeeping Telemetry
HKTM   Housekeeping Telemetry
ICDS   Instrument Command and Data System
IT     Information Technology
I&T    Integration and Test
Kbps   Kilobits per second
Km     Kilometer
JPL    Jet Propulsion Laboratory (Aquarius Project Management and instrument subsystem provider)
LVPS   Low Voltage Power Supply
LUT    Look Up Table (Radiometer)
MB     Megabytes
Mbps   Megabits per second
MOC    Mission Operations Center (CONAE ground system acronym)
MOM    Mission Operations Manager (a CONAE position)
NASA   National Aeronautics and Space Agency
NGN    NASA Ground Network
                                                                                         100
                            Acronym List, O - Z
OMT      Ortho Mode Transducer
ORT      Operations Readiness Test
ORR      Operations Readiness Review
OS       Operating System
PC       Personal Computer
PPS      Pulse Per Second
PSU      Practical Salinity Units
RAM      Random Access Memory
RBE      Radiometer Back End
RFE      Radiometer Front End
RMS      Root-Mean-Squared
RF       Radio Frequency
RT       Real time
SACD     Satelite Argentina Cientifica – D
SBE      Scatterometer Back End
SFE      Scatterometer Front End
SFTP     Secure File Transfer Protocol
SInter   Spacecraft Interpreter
SOC      Spacecraft Operations Control
SOCB     Science Operations Control Board
SOP      Spacecraft Operations Planning (system)
SP       Service Platform (generic term for SAC-D)
ST       Stored (data)
TC       Telecommand
TCP/IP   Transfer Control Protocol/Internet Protocol
                                                       101
Backup Slides
                                Engineering Test-beds
Radiometer Engineering Test-bed (at GSFC)
                                                    Radiometer RF
 ICDS          Cmds/timing DPU          Cmds/timing EMs:
 Simulator        HKT                    Sci/telem RBE
 BCE & PC                  (EM)                     RFE
                 science                                                    •Engineering test-beds stay with the cognizant
                                                    CND                     engineers (at GSFC and at JPL) to investigate
                                                                            functional/performance issues.

Scatterometer Engineering Test-bed (at JPL)
   LVPS
   EGSE             Scat RF BBs:
  (DCCP)            SBE, SCG, SFE,        APDU
                    LVPS, RF-deck,        slice 4
    ICDS            Diplexer, coupler     EM              Antenna Test-bed (at JPL)
  simulator
  or ICDS-                        Standard                    EM feed/OMT
     BB2                     test/measurement
                                 equipment                                               Flight Software Test-bed
                                                                                         (at JPL)
                                                                                                    RAD6K BB
ATC engineering Test-bed (at JPL) APDU Engineering Test-bed (at JPL)
                                                                 APDU
ATC                                             APDU
              APDU         ATC                                slice2 BCE
Heater        slice 1      controller           Slice 2
modules       EM           BB                   EM               APDU         Thermal Modeling Test-bed (ASL/JPL)
                                                APDU
BB                                                            slice3 BCE                Aquarius thermal models for
                                                Slice 3
       ATC BCE                                                                           analysis and simulations
                                                EM               APDU
      and Labview                               APDU
                                                              slice5 BCE
                                                Slice 5
                                                EM

								
To top