一种新的波达方向与幅相误差联合估计方法  

New estimation method for DOA and gain-phase errors

作　　者：徐青[1] 廖桂生[1] 马仑[1] 

机构地区：[1]西安电子科技大学雷达信号处理国防科技重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2008年第12期2294-2297,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金(60472097);教育部新世纪优秀人才基金联合资助课题

摘　　要：研究了信源方向未知时,对信源方向与幅相误差同时进行估测的问题。针对两者的耦合导致估计精度下降的问题,提出了一种阵列幅相误差校正方法。该方法通过对分时工作信号的分析,分离信源方向与幅相误差的耦合,通过一次迭代即可得到信源方向、幅相误差的精确估计值,且适用于任意阵列。给出了该方法实现的具体步骤,通过仿真结果验证了该方法的有效性和可行性。The problem of simultaneous estimations of both the gain-phase errors and the DOA is studied when the signal＇s direction is unknown. The coupling of the DOA and the gain-phase errors of the array becomes the main factor which affects the precision of the estimation. A method that estimates the gain-phase errors of the array is presented. Through the analysis of the signals working time-sharing, the influence of the DOA and the gain-phase errors are separated, and the accurate estimations of them are gained by iteration only once. The method is suitable for any array manifold. The steps of this method are also given. Finally, the simulation results show its feasibility and validity.

关 键 词：幅相误差 波达方向 特征值分解 联合估计 

分 类 号：TN911.7[电子电信—通信与信息系统]