Title :
Joint estimation of array calibration parameters
Author :
Lei, Wang ; Xuchu, Dai
Author_Institution :
Dept. of Electron. Eng. & Info. Sci., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
Performance of array processing is severely impaired in the presence of mutual coupling and channel mismatch among sensors. In this paper, a novel method is proposed to solve the problem which is suitable for arbitrary arrays. In the proposed method, only one auxiliary signal source is used to transmit from different directions in different time, and the number of the directions is determined by the number of array sensors. The basic idea of the proposed method is mainly based on the orthogonal characteristic between signal subspace and noise subspace. Computer simulation results show the correctness and validity of the proposed algorithm.
Keywords :
array signal processing; calibration; parameter estimation; array calibration parameters; array processing; array sensors; auxiliary signal source; channel mismatch; joint estimation; mutual coupling; noise subspace; orthogonal characteristic; signal subspace; Array signal processing; Calibration; Computational complexity; Impedance; Iterative algorithms; Mathematical model; Mutual coupling; Sensor arrays; Sensor phenomena and characterization; Symmetric matrices;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1493451
