存在阵元位置误差时的信号DOA估计  

Signal DOA Estimation with Sensor Position Uncertainties

作　　者：林敏[1] 刘云飞[1] 龚铮权[1] 

机构地区：[1]中国人民解放军总参第63研究所,南京210007

出　　处：《南京理工大学学报》2003年第4期381-384,共4页Journal of Nanjing University of Science and Technology

摘　　要：在超分辨测向领域 ,阵元位置误差往往会导致测向性能急剧下降 ,因此必须进行有效的校正。该文基于子空间基本原理 ,提出了一种有源校正法 ,其优点在于收敛速度快、所需校正信号的方向不必准确已知。计算机模拟结果表明 ,采用该方法完成误差校正之后 。In superresolution directionfinding, array s enso r position uncertainties often degrade its performance seriously, thus effective calibration procedure is indispensable. Based on subspace principle,this paper presents a new calibration approach with transmitting signals. The method shown s that its convergent rate is fast and directions of calibration s ignals need not be precisely known. Simulational results prove that, if the error is compensated by using the new method, signal DOAs can be accurately esti mated with the modified MUltiple SIgnal Classification algorithm.

关 键 词：DOA估计 MUSIC算法 子空间原理 误差校正 

分 类 号：TN911.7[电子电信—通信与信息系统]