A Doppler history modulated jamming against MIMO SAR

Abstract

As one of the emerging imaging sensors, multiple-input and multiple-output synthetic aperture radar (MIMO SAR) could provide more benefits for wide-swath imaging, ground moving target indication (GMTI) and three-dimensional imaging, thus making it a great threat for high value targets. To address this challenge, a Doppler history modulated jamming is proposed in this paper. By imposing an additional Doppler modulated phase on the signal of MIMO SAR which is received and stored in the digital radio frequency memory (DRFM), and then transmitting back to MIMO SAR, this jamming could effectively disturb the imaging of MIMO SAR, form jamming effect of both deception and suppression. Moreover, this jamming could counter GMTI processing of MIMO SAR. Experimental results demonstrate the effectiveness of the proposed algorithm.