基于矢量最优估计的稳健测向方法  

Robust Direction Finding Based on Optimization Estimate of Vector

作　　者：任晓松 杨嘉伟[2] 安建波 崔嵬[3] 吴嗣亮[3] 

机构地区：[1]北京遥感设备研究所,北京100854 [2]中国航天科工防御技术研究院,北京100854 [3]北京理工大学信息与电子学院,北京100081

出　　处：《现代防御技术》2016年第1期53-58,共6页Modern Defence Technology

摘　　要：为了弥补阵列天线导向矢量失配和相位测量噪声对测向性能的影响,提出基于矢量最优估计的稳健测向方法。区别于传统相关干涉仪测向方法,该方法基于阵列系统的二阶统计特性和锁相环原理对来波信号导向矢量进行最优估计,然后借鉴相关干涉仪原理确定来波信号方向。仿真分析表明,该方法弥补了阵列天线系统误差和测量相位随机噪声的影响,可以实现来波信号方向的准确测量。In order to compensate the impact of the antenna array steering vector mismatch and the phase noise, the Robust direction-finding method is proposed based on optimal estimation of vector. Different from the traditional method of correlation interferometer direction finding, after optimization estimating of steer vector based on the second order statistics of array system characteristic and the principle of phase-locked loop, the principle of correlation interferometer is referred to determine the direction of the target signal. Simulation results show that the new method can compensate the impact of the steering vec- tor mismatch and phase measurement noise, accurate measure the target signal direction.

关 键 词：阵列信号处理 特征子空间 导向矢量 锁相环 矢量相关 测向 最优估计 

分 类 号：TN82[电子电信—信息与通信工程] TN911