A Phase Center Compensation Algorithm for Adaptive Nulling Satellite Navigation Antenna

Abstract

The traditional adaptive nulling antenna array anti-jamming algorithm will cause phase distortion, which will make the antenna phase unstable and produce positioning error. In this paper, starting with the analysis of the adaptive nulling antenna array anti-jamming algorithm, the calculation method of its phase center is deduced, the real-time change of the phase is obtained, the phase center error is determined, and the compensation value is calculated, which is used for the re positioning after correction. Simulation and experimental results verify the rationality and effectiveness of the algorithm, which can be used to improve the positioning accuracy of GNSS receiver using anti-jamming array antenna.