A Subarray Processing Approach to GNSS Spoofing Detection based on Double Difference Measurements

Global Navigation Satellite Systems (GNSS) are vulnerable to various types of intentional or unintentional interference. Differential carrier phase model has already been proved to be an effective approach to detect the spoofing by utilizing the dual-antenna or multi-antenna system. However, such model will be disabled in the presence of high-power jamming. We consider to develop the differential carrier phase model in GNSS adaptive antenna array after anti-jamming. This paper proposes a new subarray processing technique to detect spoofing. A theoretical derivation will be first given and the validity is demonstrated by simulation tests.