Research on recognition features of repeater jamming airborne SAR suffers from air or ground
In view of the lack of relevant research on intermittent sampling repeater jamming that SAR suf-fers from aerial maneuvering platforms,this paper makes studies on the recognition features of intermittent sam-pling repeater jamming that airborne SAR suffers from the two types of ground fixed and aerial maneuvering plat-forms.Firstly,the signal model of the two types of repeater jamming is derived,and a multi-domain joint analysis is conducted theoretically on recognition features of the two types of repeater jamming.And then,the time-fre-quency analysis method based on WVD distribution and the SAR imaging algorithm based on ω-K are used to simulate and analyze the two jamming patterns from four dimensions of the disturbed signals:time domain,fre-quency domain,time-frequency domain and image domain.The simulation results verify the correctness of the theoretical analysis,thus providing a reliable analysis idea and recognition basis for the pattern recognition when airborne SAR is subjected to repeater jamming.The paper further gives countermeasures against the two types of repeater jamming.
万方数据
维普
