Clutter and main-lobe suppression jamming suppression method for bistatic airborne radar

被引：0
|
作者：
Wang A. [1 ]
Xie W. [1 ]
Chen W. [1 ]
Xiong Y. [1 ,2 ]
Wang Y. [1 ]
机构：
[1] Radar Weapon Application Engineering Key Research Laboratory, Air Force Early Warning Academy, Wuhan
[2] School of Electronic Science, National University of Defense Technology, Changsha
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2023年 / 45卷 / 03期
关键词：
bistatic airborne radar; clutter suppression; jamming matching; main-lobe suppression jamming;
D O I：
10.12305/j.issn.1001-506X.2023.03.10
中图分类号：
学科分类号：
摘要：
When the jamming enters from the main-lobe of the beam, the traditional spatial anti-jamming method not only cannot suppress the main-lobe jamming, but also causes the problem of main-lobe distortion and side-lobe elevation, which seriously affects the target detection performance of airborne radar. Aiming at this problem, an airborne radar clutter and main-lobe suppression jamming suppression method based on bistatic configuration is proposed. This method firstly forms multiple adjacent spatial beams for the primary and auxiliary radars respectively, then performs pulse Doppler (PD) processing on the beamformed data, and matches the jamming signals of the primary and auxiliary radars in the range-Doppler domain. On this basis, the Doppler channels corresponding to the primary and auxiliary radars are used to suppress the jamming through time-domain adaptive filtering. Finally, the data of adjacent beams are combined to suppress the residual clutter through reduced-dimension space-time adaptive processing (STAP). The simulation results show that the proposed method can effectively suppress the clutter and main-lobe jamming. Compared with the traditional sample matrix inversion (SMI) method and the joint domain localized (JDL) method, the signal to interference plus noise ratio performance is improved by about 20.6 dB and 21.5 dB respectively. © 2023 Chinese Institute of Electronics. All rights reserved.
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页码：699 / 707
页数：8
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