MVDR radar signal processing approach for jamming suppression in satellite navigation receivers

摘要

The Minimum Variance Distortionless Response (MVDR) technique, which is well-known in radar signal processing, will be applied in this paper for jamming suppression in a satellite navigation receiver. Two different beamforming schemes, conventional and MVDR are applied to a satellite navigation receiver for mitigation of strong jamming before acquisition of the C/A code. The effect of beamforming on the cross-correlation performance is evaluated in terms of two quality factors: the signal-to-interference-plus-noise ratio (SINR) improvement factor estimated at the beamformer output and the post correlation signal-to-noise ratio (SNR) which will be estimated at the cross-correlator output. The simulation results demonstrate that the more effective jamming protection and as a consequence the improved performance of the C/A code acquisition are achieved using the MVDR beamformer procedure compared to the conventional one.