A Robust GNSS Polarized Space-Time Anti-Interference Method Based on Null Broadening

Abstract

We propose a robust null broadening algorithm incorporated with the covariance matrix taper (CMT) for the dual-polarized sensitive arrays (DPSAs) in space-time domain to mitigate the performance degradation of traditional anti-jamming schemes in high dynamic scenarios. Compared to spatial null broadening for DPSAs, our proposed algorithm could suppress those wide-band interferences as well as narrow-band interferences, even if those interferences with the same azimuths and frequency bands as the desired navigation signals. Simulations verify the robustness and effectiveness of the proposed algorithm.