Research Article
Mutual Coupling Calibration in Super-Resolution Direction Finding for Wideband Signals
@INPROCEEDINGS{10.1007/978-3-319-66628-0_50, author={Jiaqi Zhen and Danyang Qin and Bing Zhao}, title={Mutual Coupling Calibration in Super-Resolution Direction Finding for Wideband Signals}, proceedings={Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II}, proceedings_a={CHINACOM}, year={2017}, month={10}, keywords={Super-resolution direction finding Array calibration Mutual coupling Wideband signals}, doi={10.1007/978-3-319-66628-0_50} }- Jiaqi Zhen
Danyang Qin
Bing Zhao
Year: 2017
Mutual Coupling Calibration in Super-Resolution Direction Finding for Wideband Signals
CHINACOM
Springer
DOI: 10.1007/978-3-319-66628-0_50
Abstract
Most super-resolution direction finding methods need to know the array manifold exactly, but there is usually mutual coupling error in application, which directly leads to the performance degradation, and even failure. The paper proposed a novel calibration method in super-resolution direction finding for wideband signals based on spatial domain sparse optimization when mutual coupling exists in the array. First, the optimization functions are founded by the signals of every frequency bin, then the functions are optimized iteratively, after that the information of all frequencies is integrated for the calibration, finally, the actual directions of arrival (DOA) can be acquired, the performance of the method has been proved by simulations.