Carrier Phase Distortions with anti-jamming Techniques using GNSS Array Receivers

The use of GNSS positioning in highly automated systems, like packet delivering using drones or self-driving cars, demands a reliable and accurate position estimation. At the same time the risk for radio frequency interference (RFI), intentional or unintentional, increases. A promising countermeasure to this issue is RFI mitigation with spatial filters using an antenna array. However, these filters can induces a phase error to the carrier phase measurements used with high precision positioning techniques like Precise Point Positioning (PPP). In this work the induced carrier phase error is studied for some common spatial filters like the minimum variance distortionless response (MVDR) or the Eigenbeamformer.