现代雷达2024，Vol.46Issue(2)：35-41,7.DOI:10.16592/j.cnki.1004-7859.2024.02.004
基于空时域滤波的欺骗式干扰抑制技术
Deceptive Interference Suppression Technology Based on Spatiotemporal Filtering
摘要
Abstract
Deceptive interference has strong directionality in space.Their decomposition(projection)can be realized effectively in the Doppler domain by utilizing the angle-doppler relation of SAR signals.Taking advantage of this,a joint spatial-temporal adap-tive filter based on multiple Doppler constraints is proposed in this paper,which can realize effective suppression of deceptive inter-ference signals in combination with multi-channel SAR system.The space-time spectrum of the effective signal and DFI is firstly analyzed and estimated.Then the squint MSAR data are processed.The main lobe DFI is removed by using the subspace projec-tion matrix and the suppression of the side lobe DFI and the reconstruction of the signal spectrum are realized by using the multi-doppler direction linearly-constrained minimum variance(MDD-LCMV)beamformer.In this paper,the effectiveness of the pro-posed algorithm is verified by point simulation experiments.关键词
欺骗式干扰/合成孔径雷达/多通道/自适应滤波器/子空间投影Key words
deception interference/synthetic aperture rader/multi-channel/adaptive filter/subspace projection分类
信息技术与安全科学引用本文复制引用
邢孟道,胡升晖,林浩..基于空时域滤波的欺骗式干扰抑制技术[J].现代雷达,2024,46(2):35-41,7.基金项目
自然科学青年基金资助项目(62301390) （62301390）
