Journal of Systems Engineering and Electronics ›› 2019, Vol. 30 ›› Issue (6): 1074-1080.doi: 10.21629/JSEE.2019.06.03

• Electronics Technology • Previous Articles     Next Articles

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

Kunlai XIONG1,*(), Zhangmeng LIU1(), Pei WANG2()   

  1. 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
  • Received:2018-12-20 Online:2019-12-20 Published:2019-12-25
  • Contact: Kunlai XIONG E-mail:comecloud@163.com;liuzhangmeng@nudt.edu.cn;peigongliu@hotmail.com
  • About author:XIONG Kunlai was born in 1986. He received his Ph.D. degree in communication and information system from National University of Defense Technology, Changsha, China, in 2015. He is currently a lecturer in National University of Defense Technology, Changsha, China. His research interests are array signal processing and blind signal separation. E-mail: comecloud@163.com|LIU Zhangmeng was born in 1984. He received his Ph.D. degree in communication and information system from National University of Defense Technology, Changsha, China, in 2012. He is currently an associate professor in National University of Defense Technology, Changsha, China. His research interests are array signal processing and compressive sensing. E-mail: liuzhangmeng@nudt.edu.cn|WANG Pei was born in 1982. He received his Ph.D. degree in mission planning from National University of Defense Technology, Changsha, China, in 2011. He is currently a lieutenant colonel in the Unit 75831, PLA. His research interests include operation mission planning and intelligent optimization algorithms. E-mail: peigongliu@hotmail.com

Abstract:

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.

Key words: direction of arrival (DOA), array calibration, space alternating generalized expectation-maximization (SAGE), wideband signal