两发两收SAR 系统互相关噪声消除方法研究

基金项目:

内蒙古自治区高等学校科学技术研究项目资助(NJZZ11069)和内蒙古自治区自然科学基金项目(2011BS0904)资助课题

Method of Removing the Cross-correlation Noise for Dual-input and Dual-output SAR

(College of Information Engineering, Inner Mongolia University of Technology, Hohhot 010051, China)

Funds: null

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。
- 合成孔径雷达 /
- 限幅滤波器 /
- 逆滤波方法 /
- 互相关噪声
Abstract: 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 computer simulation and account for the integrated sidelobe ratio showed the effectiveness of the proposed method.
- SAR /
- Threshold filter /
- Inverse filter method /
- Cross-correlation noise

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