Abstract：For adaptive monopulse technology in phased radar system,a novel algorithm for suppressing mainlobe and sidelobe interferences based on two sum and three difference channels is proposed in this paper.Weighting approximation method is adopted to produce weights to form sum,azimuth difference,elevation difference and double difference beams for irregular subarrays.Then azimuth difference,elevation difference beams and sum beam in the direction of sidelobe interference work as the auxiliary beams of static sum beam,while double difference beam works as the auxiliary beam of azimuth difference and elevation difference beams.Based on the principle of Wiener filter,the auxiliary beams are weighted in the optimized way to cancel the mainlobe and sidelobe interferences in the sum beam and mainlobe interference in azimuth difference and elevation difference beams.The proposed algorithm is of simple structure and high accuracy.It is able to simultaneously suppress the mainlobe and sidelobe interferences without distortion of monopulse ratio.Finally,the simulation results and analyses prove the effectiveness of the method.
孙晨伟, 陶海红, 郭晓双, 宋嘉奇. 基于非均匀子阵的双和/三差通道同时抑制主副瓣干扰[J]. 电子学报, 2019, 47(4): 907-914.
SUN Chen-wei, TAO Hai-hong, GUO Xiao-shuang, SONG Jia-qi. Mainlobe and Sidelobe Interferences Suppression Based on Two Sum & Three Difference Channels for Irregular Subarrays. Acta Electronica Sinica, 2019, 47(4): 907-914.
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2019, Vol. 47 
