High-Precision Positioning with Interference-Resilient GNSS Array Receivers at Jammertest 2025

Kurzfassung

GNSS signals are intrinsically vulnerable to jamming. One of the most efficient countermeasure against this threat are antenna array systems, which can utilize spatial filtering to mitigate malevolent signals. However, this countermeasure is generally not suitable for high-precision applications using carrier phase measurements (like RTK or PPP), because spatial filtering induces a directional dependent phase shift into the measurements. In this paper we will propose and compare three different approaches to mitigate interference and simultaneously maintain consistent carrier phase measurements. These approaches will be verified and compared in different real-world jamming scenarios recorded at the Jammertest 2025. The results show that all three approaches are valuable in different situations.