In-lab validation of jammer detection and direction finding algorithms for GNSS

Abstract

Our paper focuses on the detection and direction finding of jamming signals in Global Navigation Satellite System (GNSS) bands. A methodology for in-lab validation for three selected jammer detection algorithms and two selected jammer direction finding algorithms is presented and measurement-based results, for nine combinations of GNSS and jamming signals, are shown. Both chirp jammers and amplitude-modulated single-tone jammers are considered in our in-lab validation process. The algorithm selection was done based on literature studies. Power-based detectors and direction finding algorithms are considered in this paper. It is shown that the considered detectors have similar performance and good detection probabilities for Jammer-to-Signal ratio (JSR) above −10 dB and that the Minimum Variance Distortionless Response (MVDR) beamformer can estimate quite accurately the jammer’s Angle of Arrival (AoA) with JSR above 10 dB.