Satellite Geolocation Disruption Detection via Coherence Metrics

The system performs preliminary verification of differential correction messages by computing coherence metrics before accepting them for positioning calculations. The method calculates expected correction values based on satellite geometry and signal characteristics, then compares these with received corrections to detect potential disruptions before they affect positioning accuracy

The system implements feedback mechanisms by continuously monitoring the coherence between received differential corrections and independently computed expected corrections. When inconsistencies are detected, the system provides feedback to reject the problematic correction messages and switch to alternative positioning methods, thereby maintaining reliability while preserving precision

The system performs self-verification by using its own received satellite signals and known orbital parameters to compute expected correction values, then compares these with received differential corrections. This self-service approach enables security verification without requiring external reference systems or additional complex infrastructure

The system changes the parameter being monitored from raw correction values to coherence metrics that represent the consistency between expected and received corrections. This transformation simplifies the detection logic by converting complex verification requirements into straightforward threshold comparisons of coherence parameters