基于空间平滑算法的二维相干源DOA估计  

Two dimentional DOA estimation of coherent signals based on spatial smoothing method

作　　者：魏小丽[1] 陈建[1] 林琳[1] 

机构地区：[1]吉林大学通信工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2008年第5期1160-1164,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60272065)

摘　　要：基于均匀矩形阵列,利用2D Unitary ESPRIT算法二维参数自动配对的优点,运用二维空间平滑技术进行解相干,并结合虚拟阵列扩展的EVESPA算法,提出了相干源的2D-SS-EVESPA-DOA估计算法。该算法在多径环境下能精确估计出二维波达角,能实现多径波达方向的分组估计,而无需进行谱峰搜索;并实现二维角度的自动配对,二维参数自动配对,无需二维谱峰搜索。仿真实验证明了算法的有效性。Based on uniform rectangular array, using 2-D unitary ESPRIT method that automatically matches 2-D angles, with two dimensional spatial smoothing technique for de-coherent, and by combination of EVESPA method, a 2D-SS-EVESPA-DOA estimation algorithm was proposed. In the coherent signals, this algorithm could group the 2-D DOA angles according the different coherent source without 2-D spectral peak searching and pair the 2-D angles automatically. The simulation results show the effectiveness of the algorithm.

关 键 词：信息处理技术 二维DOA估计 多径 2D ESPRIT 空间平滑 均匀矩形阵列(URA) 

分 类 号：TN911.72[电子电信—通信与信息系统]