一种估计相关信号波达方向的改进算法  

A modified algorithm of estimating direction of arrival for related signals

作　　者：郑宏兴[1] 何伟[1] 

机构地区：[1]天津工程师范学院天线与微波技术研究所,天津300222

出　　处：《天津工程师范学院学报》2008年第4期6-9,共4页Journal of Tianji University of Technology and Education

基　　金：国家自然科学基金资助项目(60871026);教育部科学技术研究重点项目(207007)

摘　　要：为了研究智能天线系统中发射信号的到达定位问题,给出了一种基于空间平滑技术的算法,对总体最小二乘法——旋转不变技术的信号参数估计算法进行了改进。仿真结果表明,改进算法不仅适用于独立信号源,而且适用于相关信号源,具有计算量小、分辨率高、对信噪比要求低等特点。In order to investigate the locating problems of emitted signals arrival in the smart antenna system, a modified algorithm is proposed. On the basis of spatial smoothing technique, the method of total least squaresestimating signal parameters via the rotational invariance technique is ameliorated. Simulation results have been given to verify this modified algorithm for both independent and coherent signals. It shows that a good performance of proposed technique is with low computational complexity, high resolution, and small signal to noise ratio.

关 键 词：智能天线 空间平滑技术 波达方向 相干信号 

分 类 号：TN820.1[电子电信—信息与通信工程]