Designing Dope Distributed Systems for Outer Space with High-Fidelity Simulation
summary
A deterministic, event‑driven simulation runs the exact compiled C++ GNC code for both VISORS CubeSats faster than realtime so one minute of wall time covers 48 hours of mission behavior and 30 orbits, exposing timing and networking bugs quickly. The team models lossy cross‑link latency, physical noise, and runs onboard maneuver planning with EOS optimization, validates centimeter‑level alignment for a 40 m focal length telescope with 1.8 cm lateral and 1.5 cm line‑of‑sight tolerances, demonstrates realtime differential GPS with integer ambiguity resolution, and uses single‑process deterministic tracing to reproduce and fix failures.
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chapters (10)
- 0:00Introduction to visor
- 1:54Mission objectives
- 4:30Operations and GNC software
- 9:12System architecture
- 15:29Simulation testing approach
- 21:06Modeling noise and fidelity
- 24:47Achieving determinism
- 27:58Faster than real-time
- 30:57Simulation takeaways
- 35:34Designing system boundaries
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