Effective Region of Active Decoy Jamming to SAR Based on Time-delay Doppler-shift Method
①(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China) ②(State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Changsha 410073, China)
The active decoy jamming to SAR based on the Time-Delay Doppler-Shift (TDDS) method is effective in certain regions. Proper utilization of jamming to ensure good decoy quality requires a study of the effective region. After the mathematical analysis of the difference between the jamming signal and a real point-target echo, the paper points out that residual Range Cell Migration (RCM), matched filter error, and loss of Doppler bandwidth are three main factors that lead to a deterioration of the focus of a jamming signal. The formulation of the effective regions is obtained and verified by simulation results. The study indicates that the TDDS method can effectively protect limited regions around the jammer.
刘永才, 王伟, 潘小义, 代大海. 基于延迟-移频的SAR 有源欺骗干扰有效区域研究[J]. 雷达学报, 2013, 2(1): 46-53.
Liu Yong-cai, Wang Wei, Pan Xiao-yi, Dai Da-hai. Effective Region of Active Decoy Jamming to SAR Based on Time-delay Doppler-shift Method. JOURNAL OF RADARS, 2013, 2(1): 46-53.
