Decision-making algorithms based on generalized likelihood ratio test for angle-of-arrival GNSS integrity monitoring

In accordance with Angle-of-Arrival GNSS anti-spoofing integrity monitoring method two different approaches are considered: the direct signal analysis on antenna array and the post-processing of direction-finding results. Four different structures for integrity-monitoring procedures are derived as generalized likelihood ratio test for the case when an integrity failure is produced by single interference source, whose location is unknown and random. Three different dynamic models of the platform were taken into account: a stationary object, a ground dynamic object and an UAV. For each of these dynamic model types probability-based characteristics (“false alarm” and “missed detection” probabilities) are obtained for an equidistant two-dimensional antenna array with a small number of elements.