Adaptive hybrid method for low‐angle target tracking in multipath

Abstract

Tracking low-angle targets is a serious problem in radar systems because of the multipath phenomenon. When a signal is reflected from the ground surface, due to the low altitude of the target, it enters the radar main beam and seriously reduces its performance. The authors propose a novel adaptive hybrid method based on the complex angle (CA) method and the array monopulse system. They present a way to reduce the ambiguity of the CA method, and then, eliminate the multipath effect by using beamforming and provide an accurate estimate of the elevation angle. The simulation results show the performance of this method in tracking low-angle targets.