Patent Document ID: 9971037
Application ID: 14066317
Patent Status: 1

Claim One:
1. A method for monitoring carrier phase anomalies in global navigation satellite system (GNSS) comprising first and second antennas implemented on a mobile platform comprising: receiving signals from a plurality of GNSS satellites at a first receiver operatively connected to the first antenna; receiving signals from the plurality of GNSS satellites at a second receiver operatively connected to the second antenna; measuring an orientation of the mobile platform at an inertial navigation system comprising at least one sensor; predicting a relative carrier phase between respective first and second antenna locations of the first and second antennas as a function of a relative position between the two antenna locations and the orientation of the mobile platform, as determined at the inertial navigation system; measuring a relative carrier phase between the first and second antenna locations based upon the received signals at the first receiver and the second receiver; calculating an anomaly detection metric as a function of a difference between the measured relative carrier phase and the predicted relative carrier phase; and providing a time series of calculated anomaly detection metrics to a rule-based expert system to determine if an anomaly is present.