Space Systems Software Validation
HIL Test Rig Architecture
+—————+
| Test Console |
+——-┬——-+
|
+——————+ +——-▼——-+ +—————–+
| Flight Computer ◄──────► Test Harness ◄──────► Ground Station |
+——————+ +——-┬——-+ +—————–+
|
+——-▼——-+
| Fault Injector|
+—————+
Radiation Testing Protocol
SEU Injection Rate:
λ = Φ × σ × A × t
Where:
Φ = 10 particles/cm²/s (proton flux)
σ = 1e-14 cm²/bit (cross-section)
A = 8GB RAM (addressable area)
t = 24h (exposure time)
Telemetry Validation
Data Structure Verification:
#pragma pack(1)
typedef struct {
uint32_t timestamp;
float32_t temp;
uint16_t voltage;
uint8_t status;
uint8_t crc;
} telemetry_packet;
Optimization Statistics
Performance Requirements
| Subsystem | Latency | Accuracy | Test Method |
|---|---|---|---|
| Attitude Control | 10ms | 0.01° | Gyro Stimulus |
| Power Mgmt | 50ms | 5mV | Solar Simulator |
Anomaly Resolution
Case Study
Unexplained torque spikes
- Root cause: Solar array flutter
- Fix: Added 10Hz low-pass filter
- Verification: 200hr vacuum chamber test
