Module coupling and cohesiveness underscore a key design principle for high-assurance space platforms: Each module should handle a focused, well-defined function without unwarranted ties to other services. If a telemetry processing unit and a cryptographic control module share minimal—and clearly documented—interfaces, an unexpected fault in one is less likely to propagate and compromise the other. Implementing strict hardware partitions or microkernels for highly critical flight software can enforce these boundaries in real time, preventing accidental data contamination across modules. Because the hardware resources and bandwidth in orbit are precious, ensuring each module is cohesive (focused on its specific task) and only lightly coupled (exchanging minimal data with other modules) promotes mission reliability and easier post-launch troubleshooting when anomalies arise.
The onboard IPS system should be integrated into the existing onboard spacecraft fault management system (FMS) because the FMS has its own fault detection and response system built in. SV corrective behavior is usually limited to automated fault responses and ground commanded recovery actions. Intrusion prevention and response methods will inform resilient cybersecurity design. These methods enable detected threat activity to trigger defensive responses and resilient SV recovery.