改进正则化正交匹配追踪波达方向估计方法  

Improved regularized orthogonal matching pursuit method used in estimation of directions of arrival

作　　者：蔡盛盛[1,2] 张佳维[2] 冯大航[2] 鲍明[2] 王智[1] 

机构地区：[1]浙江大学工业控制技术国家重点实验室,杭州310027 [2]中国科学院声学研究所,北京100190

出　　处：《声学学报》2014年第1期35-41,共7页Acta Acustica

基　　金：中国科学院战略性先导科技专项(XDA06020200;XDA06020201);国家自然科学基金(11174316;61273079);工业控制技术国家重点实验室开放课题(ICT1206;ICT1207);中国科学院无线传感网与通信重点实验室开放课题(2011001;2012001)资助

摘　　要：针对稀疏阵列模型下匹配追踪波达方向估计方法稳定性不足的问题,提出了改进的正则化正交匹配追踪波达方向估计方法——TROMPDOA(T-transform Regularized Orthogonal Matching Pursuit Directions of Arrival Estimation).仿真表明,TROMPDOA方法在计算复杂度上与原有正交匹配追踪波达方向估计方法OMPDOA(Orthogonal Matching Pursuit Directions of Arrival Estimation)相近,但在估计稳定性上要优于OMPDOA方法,特别是在低信噪比及信号源之间的角度较近时,TROMPDOA方法比OMPDOA方法稳定性提高1倍.实验验证了TROMPDOA方法适用于单元和多元目标估计,估计精度达到1.5°.To tackle the problem of the stability of the direction of arrival estimation based on the matching pursuit method under the sparse array model, an improved regularized orthogonal matching pursuit method named TROMPDOA （T-transform Regularized Orthogonal Matching Pursuit Directions of Arrival estimation） was proposed. The complexity of the proposed method TROMPDOA is comparable to OMPDOA, but the stability is even better, especially under the low SNR and closely spaced signals conditions. The estimation accuracy of the proposed method was evaluated by experiment, with 1.5° accuracy for both single-source and multi-source.

关 键 词：估计方法 波达方向 匹配追踪 正则化 正交 TRANSFORM 计算复杂度 稳定性 

分 类 号：TN912.3[电子电信—通信与信息系统]