电波科学学报2023，Vol.38Issue(6)：1029-1039,11.DOI:10.12265/j.cjors.2022246
基于逆chirp scaling的合成孔径雷达卷积欺骗干扰方法
A SAR convolutional deceptive jamming method based on the inverse chirp scaling
摘要
Abstract
Aiming at the problem that it is difficult to balance the fidelity and low computation when generating false scenes by existing synthetic aperture radar(SAR)jamming methods,this paper proposes a SAR convolutional deceptive jamming method based on the inverse chirp scaling(CS)imaging algorithm.The method uses phase multiplication to compensate for the distance migration of each false point within the false scene,which avoids interpolation operations and improves the accuracy of false scene generation while reducing the computational effort of obtaining the jammer's frequency response(JFR).Moreover,by performing chirp-Z transform(CZT)on the deceptive template,the template image can be directly transformed to the space frequency domain corresponding to the actual SAR signal,the interpolation operation is avoided again,the computational effort of obtaining the JFR is further reduced,and the real-time performance of the jammer is proved.Theoretical analysis and simulation experiments verify that the proposed method can balance the accuracy and computational efficiency of false scene generation compared with the inverse omega-K(ωk)approximation method and the classical two-step generation method.关键词
合成孔径雷达(SAR)/虚假场景/chirp scaling(CS)成像/线性调频Z变换(CZT)/干扰机Key words
synthetic aperture radar/false scene/chirp scaling(CS)imaging/chirp-Z transform(CZT)/jammer分类
信息技术与安全科学引用本文复制引用
纪朋徽,邢世其,代大海,徐伟,庞礴,冯德军..基于逆chirp scaling的合成孔径雷达卷积欺骗干扰方法[J].电波科学学报,2023,38(6):1029-1039,11.基金项目
国家自然科学基金(61971429) （61971429）
