旋转角反射器阵列对SAR-GMTI的无源遮蔽干扰方法

摘要

Due to the strict requirements and high expense of positive jamming equipment for SAR-GMTI sys-tems,a passive shading jamming method againest SAR-GMTI by utilizing array rotating angular reflectors was proposed.This method used micro-Doppler modulation induced by rotating angle reflectors to form jamming strips,and used azimuth and L arrays of rotating angle reflectors to form barrage jamming.Because of the rota-ting micro-motion features,the jamming echo could not be cancelled by GMTI.Simulation results showed that the method could provide a big shading jamming area.%针对SAR-GMTI有源干扰设备的高要求和成本大的问题,提出了旋转角反射器阵列对SAR-GMTI的无源遮蔽干扰方法.该方法利用旋转角反射器的微多普勒调制在方位向上形成干扰条带,通过多个旋转角反射器L形布阵在距离向上形成压制干扰,由于旋转的微动特性,回波信号经GMTI处理后不能被对消,因此该方法对SAR-GMTI具有大面积遮蔽干扰效果.仿真实验表明,该方法能够对SAR-GMTI产生大面积的遮蔽干扰效果.