aerospace testing 2006 a centralized approach to ground support software to reduce technical risk...
TRANSCRIPT
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Aerospace Testing 2006
A Centralized ApproachTo
Ground Support SoftwareTo
Reduce Technical Risk and Overall Mission Costs
Thomas HauckGSE Software, [email protected]
Stephen E. JaskulekApplied Physics LaboratoryJohns Hopkins [email protected]
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New HorizonsCase study of the New Horizons Mission to Pluto
Launch: Jan. 19, 2006
Pluto Encounter: 2015
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Mission Life CycleInstrument Test & Development Configuration
Flight Instrument
Spacecraft Interface
Emulation Hardware
Local Storage
BIOSSystem
Core
Network Interface
TLM & CMD interface
GSEOSInstrument Customization
TLMScreen
sTLM
ScreensTLM
ScreensTLM
Screens
Instrument Decoder
Instrument DecoderInstrument
Decoder
Payload Integration Configuration
Flight Instrument
Spacecraft
Local Storage
BIOSSystem
Core
Network Interface
TLM & CMD interface
SpacecraftGSE
GSEOSInstrument Customization
TLMScreen
sTLM
ScreensTLM
ScreensTLM
Screens
Instrument Decoder
Instrument DecoderInstrument
Decoder
Flight Operations Configuration
Flight Instrument
Spacecraft
Local Storage
BIOSSystem
Core
Network Interface
TLM & CMD interface
Ground Station
GSEOSInstrument Customization
TLMScreen
sTLM
ScreensTLM
ScreensTLM
Screens
Instrument Decoder
Instrument DecoderInstrument
Decoder
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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.
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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
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Coordinated GSE
ALICE PEPSSI RALPH REXLORRI SDC
Instrument Test & Development
Payload Integration
Flight Operations
GSEOS
Mission Specific Extensions
S/C Hardware Emulator
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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
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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
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User Interface
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Block Concept
Bios
RS422 Serial Input
RS422 Serial Output
Data
Commands
RS422Raw
DecoderStatus
TLM
Network Module
Ethernet TCP/ IP
Ethernet TCP/ IP
Data
CommandsSFDU Raw
SFDU
CCSDSHeader
RS422RawDecoder
SFDUDecoder
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Block Hierarchy
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New Horizons GSE
ExcelTM based TLM & CMD definitionsZero-Impact Conversion ToolsSTOL EmulatorCommon MOC (Mission Operation
Control) InterfaceConfiguration ControlCross-team Telemetry Visibility
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Mission Benefits
Enhanced GSE capabilitiesReduced code duplication (20%)Reduced technical risk (30%)Reduced scheduling risk (50%)Reduced hardware costs (50%)Reduced overall mission costs
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Discussion/Questions