【摘要】 针对处理现有雷达系统在旁瓣抑制过程中易影响到主瓣展宽的不足,分析了MIMO-SAR成像机理,并解析了SAR图像旁瓣原理.给出变迹滤波模式下的两种旁瓣抑制策略:一种为间距从SVA和方位向三变迹滤波操作;另一种为二维分离模式的SVA处理方法.实验结果表明,本文方法的加权参量随主副瓣部分的改变而改变,因而能够保留主瓣的宽度,并且起到抑制旁瓣作用.更多还原

【Abstract】 The SAR imaging strategy is widely used in MIMO radar,which can solve the problem that the main lobe of the radar system is easy to be affected during the sidelobe suppression.This study analyzed the imaging mechanism of MIMO-SAR,and analyzes the SAR image and then gives the sidelobe principle,two kinds of trace filtering mode sidelobe suppression strategy,one is the distance from the SVA filter and azimuth three trace,second separation processing method for two-dimensional SVA model.The experimental results show that the weighted parameter of the method varies with the change of the main sidelobe,so the width of the main lobe can be preserved and the sidelobe can be suppressed.更多还原