SAGE-based algorithm for DOA estimation and array calibration in the presence of sensor location errors  

作　　者：XIONG Kunlai LIU Zhangmeng WANG Pei 

机构地区：[1]State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,National University of Defense Technology,Changsha 410073,China [2]Unit 75831 of the PLA,Guangzhou 510000,China

出　　处：《Journal of Systems Engineering and Electronics》2019年第6期1074-1080,共7页系统工程与电子技术（英文版）

摘　　要：The direction of arrival(DOA) estimation problem in the presence of sensor location errors is studied and an algorithm based on space alternating generalized expectation-maximization(SAGE) is presented. First, the narrowband case is considered.Based on the small perturbation assumption, this paper proposes an augmentation scheme so as to estimate DOA and perturbation parameters. The E-step and M-step of the SAGE algorithm in this case are derived. Then, the algorithm is extended to the wideband case. The wideband SAGE algorithm is derived in frequency domain by jointing all frequency bins. Simulation results show that the algorithm achieves good convergence and high parameter estimation precision.The direction of arrival(DOA) estimation problem in the presence of sensor location errors is studied and an algorithm based on space alternating generalized expectation-maximization(SAGE) is presented. First, the narrowband case is considered.Based on the small perturbation assumption, this paper proposes an augmentation scheme so as to estimate DOA and perturbation parameters. The E-step and M-step of the SAGE algorithm in this case are derived. Then, the algorithm is extended to the wideband case. The wideband SAGE algorithm is derived in frequency domain by jointing all frequency bins. Simulation results show that the algorithm achieves good convergence and high parameter estimation precision.

关 键 词：direction of arrival(DOA) array calibration space alternating generalized expectation-maximization(SAGE) wide band signal. 

分 类 号：TN9[电子电信—信息与通信工程]