Emulating Software Systems for IV

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Emulating Software Systems for IVV using REATSS

• Sam Martin, Division Manager
• Dan Nawrocki, Systems Engineer
• ProLogic, Inc.

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Agenda

• Overview of REATSS
• Overview of GLAST
• Goals
• Methodology
• Results
• Future Work
• Questions

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Overview of REATSS

• NASA performs IVV on 12 to 20 different systems
  at a time
• Use of sim and test environments at NASA IVV
  limited due to cost
• Shuttle engineering sims
• Space Station MDM/EMDM testbench
• Current technologies are mature enough to develop
  a net-centric sim and test architecture
• Rapid integration of components at less cost

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Overview of REATSS

• Distributed simulation framework
• Rapid reconfiguration
• Object oriented
• Intelligent automatic distribution
• User Interface (UI)
• Create components
• Create simulations
• Manage simulation runs
• Monitor running simulations

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Overview of REATSS
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Overview of REATSS

• Networking
• Generic Reconfigurable Interface Manager (GRIM)
• Generic
• Uniform API despite middleware
• Pluggable network backend
• Object Modeling Groups (OMG) Data Distribution
  Service (DDS)
• IEEE 1516 High Level Architecture (HLA)
• Reconfigurable
• Completely configurable at run-time via XML

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Agenda

• Overview of REATSS
• Overview of GLAST
• Goals
• Methodology
• Results
• Future Work
• Questions

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Overview of GLAST

• Science instruments developed by SLAC
• Detects Gamma Ray Bursts (GRB)
• Studies
• Active galactic nuclei
• Pulsars
• Stellar-mass black holes
• Supernova remnants
• Gamma ray bursts
• Galactic and extragalactic high-energy radiation
• Particle dark matter
• Quantum gravity
• Evaporating black holes

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Overview of GLAST
Image courtesy of SLAC
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Agenda

• Overview of REATSS
• Overview of GLAST
• Goals
• Methodology
• Results
• Future Work
• Questions

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Goals

• Prove REATSS functionality
• Perform IVV on FSW
• Emulate SIU FSW
• Simulate Others
• EPU
• DAQ
• Spacecraft
• Ground system

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Agenda

• Overview of REATSS
• Overview of GLAST
• Goals
• Methodology
• Results
• Future Work
• Questions

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Methodology
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Methodology
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Methodology

• Emulate SIU

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Methodology

• Simulated EPU
• Generates HKS data
• Respond to SIU management requests
• File management
• Register read/write
• Resets, etc
• Simulated Ground Station
• Send/receive telemetry
• Run scripts

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Agenda

• Overview of REATSS
• Overview of GLAST
• Goals
• Methodology
• Results
• Future Work
• Questions

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Results

• It actually worked!

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Results
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Results
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Results
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Results

• Notable features
• Debug FSW in gdb/ddd
• Run SLAC test scripts against FSW
• Write your own for real IVV
• Complete control over SIU
• Generate SEU
• Erase flash memory
• Hardware failures
• Proved REATSS capability

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Future Work

• James Webb Space Telescope (JWST)
• Emulate ISIM
• Simulate science instruments, other hardware, and
  ground systems
• Run CSTOL scripts
• Automatic conversion to Python

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Questions?