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An anti-main-lobe jamming algorithm for airborne early warning radar based on APC-SVRGD joint optimization 被引量:1
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作者 PENG Fang WU Jun +2 位作者 WANG Shuai LI Zhijun XIANG Jianjun 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2022年第1期134-143,共10页
Main lobe jamming seriously affects the detection performance of airborne early warning radar.The joint processing of polarization-space has become an effective way to suppress the main lobe jamming.To avoid the main ... Main lobe jamming seriously affects the detection performance of airborne early warning radar.The joint processing of polarization-space has become an effective way to suppress the main lobe jamming.To avoid the main beam distortion and wave crest migration caused by the main lobe jamming in adaptive beamforming,a joint optimization algorithm based on adaptive polarization canceller(APC)and stochastic variance reduction gradient descent(SVRGD)is proposed.First,the polarization plane array structure and receiving signal model based on primary and auxiliary array cancellation are established,and an APC iterative algorithm model is constructed to calculate the optimal weight vector of the auxiliary channel.Second,based on the stochastic gradient descent principle,the variance reduction method is introduced to modify the gradient through internal and external iteration to reduce the variance of the stochastic gradient estimation,the airspace optimal weight vector is calculated and the equivalent weight vector is introduced to measure the beamforming effect.Third,by setting up a planar polarization array simulation scene,the performance of the algorithm against the interference of the main lobe and the side lobe is analyzed,and the effectiveness of the algorithm is verified under the condition of short snapshot number and certain signal to interference plus noise ratio. 展开更多
关键词 airborne early warning radar adaptive beamforming main-lobe interference suppression adaptive polarization canceller(APC) stochastic variance reduction gradient descent(SVRGD)
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