Coherent interference suppression method for nulling technology
Jianhong Xiang · Jisuanji yingyong yanjiu · 2013
In the environment with coherent interferences,the common beamforming method has poor ability to suppress coherent interferences by estimating accurately the direction of arrival(DOA) of coherent signal and desired signal.This paper proposed the new anti-jamming technology based on multiple constrained least mean-square(MC-LMS) algorithm by the analysis of the coherent signal and the weighted vector two quadratic performance functions.The method used MC-LMS algorithms calculate the weights for weighting the output of array signals,so suppressed the coherent interferences by analyzing its spectrum.The algorithm has low computational complexity,high robustness and convergence.The results of simulation show that the coherent interference could be suppressed,the effectiveness of the proposed method are demonstrated with the complex electromagnetic environment.