星载SAR高度误差对欺骗性干扰效果的影响

Influence of Spaceborne SAR Orbit Altitude Error on Jamming Effect

由于对抗星载SAR过程中,SAR参数的侦测会存在误差,为了确定侦测误差是否对欺骗性干扰造成影响,在星载SAR欺骗性干扰原理的基础上,对虚假信号的产生方法进行了研究。从理论上分析了星载SAR轨道高度侦测误差对卫星速度估计、干扰信号的时延、多普勒频移的影响,并进行仿真试验,结果表明该误差会对欺骗性干扰效果造成影响。

In the process of SAR countermeasure,there is unavoidable error exists in the reconnaissance of SAR parameter.In order to determine whether the error affects the deception jamming,the deception signal producing technique was studied base on the principle of deception jamming.A theoretic analysis of the influence of orbit altitude error on the satellite speed estimation,delay of jamming signal,and doppler frequency shift was made.Simulation results indicated that orbit altitude error has an effect on deception jamming.