空时处理信号失真的一种补偿方法  

The Method for Compensating the Signal Distorted by STAP

作　　者：李双勋[1] 程翥[1] 王展[1] 皇甫堪[1] 楼生强[1] 

机构地区：[1]长沙国防科技大学电子科学与工程学院信号处理实验室,长沙410073

出　　处：《信号处理》2008年第2期223-226,共4页Journal of Signal Processing

基　　金：武器装备预研项目(No.41901140401)

摘　　要：在GPS抗干扰领域,联合空时处理相比单纯的时域或单纯的空域处理,可以有效的消除更多的干扰。但是由于空时处理包含有时间延迟线结构,因而会对期望信号相关函数的相关峰产生畸变,影响定位精度,有时甚至导致期望信号无法利用。本文利用确定性最小二乘逆滤波器对失真信号进行补偿。并推导出复序列参数下最小二乘逆滤波器解的形式。仿真结果表明,这种补偿方法可行、有效。In GPS anti-jamming research field, the joint space-time processing can cancel more interference than only time domain or only frequency domain processing. Due to the time taps in the structure of STAP, it may introduce GPS signal distortion. Sometimes the desired signal is even unavailable. In this paper, a compensating method for signal distortion is proposed based on the determinacy least square inverse filter. The form of the solution for the inverse filter is also derived in this paper. Simulation result shows that the compensating method is feasible and efficient.

关 键 词：空时自适应处理 全球定位系统 逆滤波器 

分 类 号：TN943.6[电子电信—信号与信息处理] TP212.1[电子电信—信息与通信工程]