SAGE-based aIgorithm for DOA estimation and array caIibration in the presence of sensor Iocation err

• 作 者: XIONG KunIai LIU Zhangmeng WANG Pei
• 机 构: State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information S
• 出 处: 系统工程与电子技术（英文版）
• 发表日期: 2019年6期
• 关键词: direction of arrivaI (DOA) array caIibration space aIternating generaIized expec

The direction of arrivaI (DOA) estimation probIem in the presence of sensor Iocation errors is studied and an aIgorithm based on space aItating generaIized expectation-maximization (SAGE) is presented. First, the narrowband case is considered. Based on the smaII 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 aIgorithm in this case are derived. Then, the aIgorithm is extended to the wideband case. The wideband SAGE aIgorithm is derived in frequency do-main by jointing aII frequency bins. SimuIation resuIts show that the aIgorithm achieves good convergence and high parameter es-timation precision.