Performance evaluation of SAR in presence of multiplicative noise jamming

Abstract

Many electronic counter measure (ECM) systems utilize noise jamming signals to degrade the performance of the synthetic aperture radar (SAR) systems. This paper introduces an effective jamming technique against SAR called multiplicative noise jamming. This technique is proposed for jamming narrow strips or small extended areas and targets. The mathematical model of this jamming technique is presented and analysed. The effect of the noise to SAR bandwidth ratio (NSBR) of both one dimensional and two-dimensional multiplicative noise jamming technique is analysed to increase and control the effectiveness of this jamming technique on the SAR output image. This paper evaluates the effectiveness of this jamming technique on the performance of the synthetic aperture radar using quantitative criteria. These criteria are the root mean square value of the peak and integrated sidelobe ratios of the SAR system impulse response. The jamming signal is applied in a SAR real data to illustrate its effect in protecting narrow strips or small extended areas and targets of interest.