基于RCB与锁相环的跟踪鉴别测向方法  

Tracking and discriminating direction finding method based on robust capon beamforming and phase-locked loop

作　　者：任晓松 杨嘉伟[2] 崔嵬[3] 吴嗣亮[3] 安建波 欧春湘 

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：《系统工程与电子技术》2015年第4期746-751,共6页Systems Engineering and Electronics

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,提出一种基于稳健capon波束形成技术(robust capon beamforming,RCB)和锁相环的矢量最优估计与跟踪鉴别测向方法。首先基于RCB与锁相环原理,对目标来波信号导向矢量进行最优估计与跟踪测量;然后在稳定、准确跟踪导向矢量的基础上,借鉴扩频接收机伪码鉴相原理确定来波信号方向。仿真分析表明,该方法能够弥补阵列流型失配和相位噪声的影响、突破角度相关间隔的限制,准确测量来波信号的方向。In order to compensate the impact of the antenna array steering vector mismatch and the phase measurement noise, the optimal measurement method is proposed for steering vector, and the tracking identifi- cation method of direction finding is designed, basing on the robust capon beamforming （RCB） and phase-locked loop. Firstly, using the RCB algorithm estimate the optimal signal steering vector, and then basing on the prin- ciple of phase-locked loop to closed-loop track target signal steering vector. After steady and accurate tracking of the steering vectors, referencing the principle of spread spectrum receiver pseudo-code phase detector, the direc- tion of the target signal is determined. Simulation results show that the proposed method can compensate the impact of the steering vector mismatch and phase measurement noise, break through the restrictions of the angle correlation interval, and accurate measure the target signal direction.

关 键 词：阵列信号处理 稳健波束形成 锁相环 角度鉴别 导向矢量 测向 

分 类 号：TN911[电子电信—通信与信息系统]