一種新的相控陣機載預警雷達孤立干擾抑制方法
A New Method to Isolated Interferers Suppression for Phased Array AEW Radar
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摘要: 在非均勻(Non-homogeneous)雜波環(huán)境中,孤立干擾若得不到有效抑制必將引起目標檢測性能嚴重變差。對此該文提出了一種新的非均勻環(huán)境下兩級空時自適應處理的級聯(lián)算法,即首先根據(jù)均勻雜波的分布特性選取輔助波束用輔助通道法濾除均勻雜波,然后用直接數(shù)據(jù)域算法抑制孤立干擾。該方法具有性能優(yōu)良、魯棒性好和計算量低等優(yōu)點,其有效性為計算機仿真實驗結(jié)果所驗證。Abstract: The heavy loss of target detection performance must be resulted if the isolated interferers can not be effectively suppressed in the non-homogeneous environment of clutter. Therefore, a new method of two stage hybrid space time adaptive processing in non-homogeneous environment is presented in this paper, in which the homogeneous clutter is firstly suppressed based on auxiliary channel processing approach by selecting auxiliary channel according to clutters distributing characters in the beam Doppier space and the isolated interferers is latterly mitigated based on direct dnla domain algorithm, This method has advantages of excellent target detection performance, good robust to whether small yaw exists or not, and low computation load. Simulation results are presented to demonstrate its effectiveness,
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