Detection and Suppression of PPD-Jammers and Spoofers with a GNSS Multi-Antenna Receiver: Experimental Analysis

Abstract

The mitigation of disturbances by commercial GPS jammers on the GPS/Galileo signal reception was demonstrated with DLR’s multi-antenna real-time receiver GALANT in a measurement campaign in the Galileo test bed GATE in Berchtesgaden, The GALANT receiver is a robust GPS/Galileo receiver that combines different techniques to suppress interfering signals. In particular, it is able to spatially filter out interfering signals using an array antenna with four individual reception elements and subsequent adaptive digital beamforming. In a further experiment the detection of counterfeit GPS/Galileo signals which were simulating a meaconing attack has been shown. The discrimination between the authentic GNSS signals and their imitations was performed in the angular domain by estimation of the directions of arrival of the incoming signals.