Aerospace Testing 2006

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					    Aerospace Testing 2006

           A Centralized Approach
                      To
          Ground Support Software
                      To
Reduce Technical Risk and Overall Mission Costs


       Thomas Hauck         Stephen E. Jaskulek
       GSE Software, Inc.   Applied Physics Laboratory
       hauck@gseos.com      Johns Hopkins University
                            Steve.jaskulek@jhuapl.edu
                 New Horizons
Case study of the New Horizons Mission to Pluto




Launch: Jan. 19, 2006
Pluto Encounter: 2015
                                     Mission Life Cycle
                              Instrument Test & Development Configuration
                                                     Local
   Flight                                           Storage                                 TLM
Instrument                                                                                     TLM
                                                                                           Screen
                               Spacecraft                                                    Screen
                                                                                              s TLM
                                                                                                s                           Instrument
                                Interface                       System        TLM & CMD         Screen                       Decoder
                                                     BIOS                                           TLM                          Instrument
                               Emulation                         Core          interface           s
                                                                                                  Screen                          Decoder
                               Hardware                                                                                               Instrument
                                                                                                     s
                                                                                                                                       Decoder
                                                    Network
                                                    Interface

                                                                                                           Instrument Customization
                                                                GSEOS




                                       Payload Integration Configuration
                                                     Local
   Flight                                           Storage                                 TLM
               Spacecraft                                                                      TLM
                                                                                           Screen
Instrument
                                                                                             Screen
                                                                                              s TLM
                                                                                                s                           Instrument
                                                                System        TLM & CMD         Screen                       Decoder
                                                     BIOS                                           TLM                          Instrument
                                                                 Core          interface           s
                                                                                                  Screen                          Decoder
                                                                                                                                      Instrument
                                                                                                     s
                                                                                                                                       Decoder
               Spacecraft                           Network
                 GSE                                Interface

                                                                                                           Instrument Customization
                                                                GSEOS




                                            Flight Operations Configuration
                                                     Local
   Flight                                           Storage                                 TLM
               Spacecraft                                                                      TLM
                                                                                           Screen
Instrument
                                                                                             Screen
                                                                                              s TLM
                                                                                                s                           Instrument
                                                                System        TLM & CMD         Screen                       Decoder
                                                     BIOS                                           TLM                          Instrument
                                                                 Core          interface           s
                                                                                                  Screen                          Decoder
                                                                                                                                      Instrument
                                                                                                     s
                                                                                                                                       Decoder
                                                    Network
                                                    Interface

                                                                                                           Instrument Customization
                                                                GSEOS

             Ground Station
    Pros of Decentralized Approach

 Each instrument team is autonomous
  in the choice of their test and
  development system.
 Potential re-use of existing test
  equipment and familiarity with
  existing development tools.
 Administrative and budget structure
  often supports/dictates splitting the
  responsibilities at ICD level.
     Cons of Decentralized Approach

   Duplication of interface implementation
    effort.
   Payload integration has to account for
    interface problems.
   TLM&CMD changes are not adopted
    quickly and concurrently by instrument
    teams
   Higher level test tools like STOL
    (Spacecraft Test and Operations
    Language) are usually not feasible to
    develop on instrument level
   Little or no cross-instrument data visibility
                                    Coordinated GSE
                                    A LIC E          LO R R I     PEPSSI           R A LP H   REX   SDC




Instrum ent T est & D evelopm ent                               Mission Specific Extensions

      P ayload Integration
                                                                           GSEOS

       F light O perations          S/C Hardware Emulator
             Coordinated GSE
   Reduced mission wide development effort
   Payload integration can be performed more
    efficiently
   High level test environments like STOL
    interpreters are feasible
   Telemetry and command databases can be
    converted into GSE configuration
   The instrument customization can be reused
    through bench testing, payload
    integration, and flight operations
   Cross-team data access
   Compact hardware configuration. One PC can
    run all instrument GSEs simultaneously
                  GSEOS



   Rapid Development Tool for GSE
   Quick Look System
   Simple bit level telemetry definition
   Dynamic data modeling with custom
    decoders
   Archiving/Playback
   STOL Emulator
   Version Control
   Extremely portable
User Interface
                              Block Concept
     Data
RS422 Serial Input

                                 RS422   RS422Raw   Decoder
                       Bios
   Commands                       Raw     Decoder    Status

RS422 Serial Output




                                                     TLM




     Data
 Ethernet TCP/IP
                      Network    SFDU      SFDU
                                                     SFDU
   Commands            Module    Raw      Decoder
 Ethernet TCP/IP



                                                    CCSDS
                                                    Header
Block Hierarchy
           New Horizons GSE
 Excel based TLM & CMD definitions
      TM




 Zero-Impact Conversion Tools
 STOL Emulator
 Common MOC (Mission Operation
  Control) Interface
 Configuration Control
 Cross-team Telemetry Visibility
         Mission Benefits
 Enhanced GSE capabilities
 Reduced code duplication (20%)
 Reduced technical risk (30%)
 Reduced scheduling risk (50%)
 Reduced hardware costs (50%)
 Reduced overall mission costs
Discussion/Questions