一种未知信源数的高分辨DOA估计算法  

Algorithm on high resolution DOA estimation under condition of unknown number of signal sources

作　　者：齐崇英[1] 张永顺[1] 陈西宏[1] 韩颖[2] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800 [2]空军雷达学院,湖北武汉430010

出　　处：《通信学报》2005年第3期58-63,共6页Journal on Communications

基　　金：空军装备部科研基金资助项目(KJ02132)

摘　　要：提出了一种未知信源数的高分辨 DOA 估计算法。该算法在未知信源数的情况下,利用线性预测(LP)法或 Pisarenko 法与 ASPECT 技术相结合来实现高分辨谱估计。该算法在消除 LP 法或 Pisarenko 法 DOA 估计中存在的伪峰的同时可判断出入射信源数,明显减小 DOA 估计算法的运算量,并可提高谱分辨力。计算机仿真结果证明了新算法理论的正确性和有效性。An algorithm on the estimation of the direction of arrival with unknown number of signal sources is presented in this paper. Under condition of unknown number of signal sources, the new algorithm is combined LP or Pisarenko method with ASPECT to estimate the DOA with high resolution. The spurious peaks in DOAs with LP or Pisarenko method can be removed and the number of signal sources can be determined at the same time. The computational complexity is reduced and the DOA resolution is also improved in this algorithm. Computer simulation results approve the correctness and validity of this new algorithm.

关 键 词：DOA估计 线性预测法 自适应信号参数估计与分类技术 

分 类 号：TN911.7[电子电信—通信与信息系统]