Effective Region of Active Decoy Jamming to SAR Based on Time-delay Doppler-shift Method

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Abstract

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.

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	Articles by authors
	Liu Yong-cai
	Wang Wei
	Pan Xiao-yi
	Dai Da-hai

Key words： SAR Activedecoy jamming Point Spread Function Residual range cell migration Quadratic phase error Effective region

Received: 2013-01-04; Published: 2013-03-11

Cite this article:

Liu Yong-cai,Wang Wei,Pan Xiao-yi et al. Effective Region of Active Decoy Jamming to SAR Based on Time-delay Doppler-shift Method[J]. JOURNAL OF RADARS, 2013, 2(1): 46-53.

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