INS-Aided Multi-Antenna GNSS Carrier Phase Double Difference Spoofing Detection

The effective spoofing detection can prevent GNSS receiver from providing erroneous positioning, velocity and timing information. Most of the available multi-antennas carrier phase double difference-based methods, regardless aiding inertial navigation system (INS), exploit divergence in differences derived direction arrival (DOA) characteristics authentic signal signal. However, traditional methods mainly implemented by dual-antenna receivers has spatial ambiguity lacks global performance analysis. Furthermore, an INS-aided multi-antenna method is proposed without comparing predicted DOA INS vectoral measured multi antennas. To analyze influence antenna array baseline length on performance, a comprehensive numerical simulation was conducted. dead zone revealed to assess performance. effectiveness verified under positioning scenarios. In worst case, signals be effectively detected 95.2% airspace one time wavelength configuration 99.3% five times configuration, respectively.