摘要
该文针对两发两收SAR系统分离混合回波信号时的互相关噪声问题,提出了一种基于限幅滤波器和逆滤波的互相关噪声抑制方法。该方法通过限幅滤除了互相关噪声的大部分能量,从而达到较好的抑制互相关噪声的目的。同时详细给出了该方法的原理和实现步骤。并通过计算机仿真和对积分旁瓣比等的定量计算证明了该方法的有效性。
According to analysis of separating the mixed echo by suppressing the cross-correlation noise in dual-input and dual-output SAR system, a new method based on threshold filter and inverse filter was proposed. The method can eliminate the most energy of cross-correlation noise by threshold filter, which can suppress the cross-correlation noise well. The principle and implementation steps are presented in detail. The eomputer simulation and account for the integrated sidelobe ratio showed the effectiveness of the proposed method.
基金
内蒙古自治区高等学校科学技术研究项目资助(NJZZ11069)
内蒙古自治区自然科学基金项目(2011BS0904)资助课题
