### The Limitations of Static Threshold Alarms
In traditional mission operations, flight controllers configure upper and lower bounds for thousands of telemetry channels (voltages, temperatures, pressures, spin rates). When a telemetry reading crosses a red-line threshold, the spacecraft immediately trips an automated safing routine—shutting down non-essential scientific payloads and entering a sun-pointing safe mode.
While safe, entering safe mode disrupts critical science observation windows and demands intensive ground intervention. Crucially, static thresholds cannot identify: - **Sub-threshold multi-variable interactions**: A battery temperature may be within normal limits, but rising faster than solar panel angle changes can justify. - **Cascading causality**: A failing reaction wheel bearing generates micro-vibrations that degrade star tracker optical tracking, causing gyro drift.
Temporal Causal Graphs in Space Systems
At ORBITSET, we model spacecraft subsystem interactions as a directed acyclic graph (DAG) where nodes represent physical variables and edges encode thermodynamic, electrical, and kinematic causality.
By evaluating sensor residuals against causal structural equations, the AI agent distinguishes between a genuine hardware fault and nominal operational variance, providing early advisory cues hours in advance of subsystem failure.