Research Article
Calibration Method of Gain-Phase Errors in Super-resolution Direction Finding for Wideband Signals
@INPROCEEDINGS{10.1007/978-3-319-52730-7_31, author={Jiaqi Zhen and Danyang Qin and Jie Yang and Yanchao Li}, title={Calibration Method of Gain-Phase Errors in Super-resolution Direction Finding for Wideband Signals}, proceedings={Machine Learning and Intelligent Communications. First International Conference, MLICOM 2016, Shanghai, China, August 27-28, 2016, Revised Selected Papers}, proceedings_a={MLICOM}, year={2017}, month={2}, keywords={Super-resolution direction finding Array calibration Gain-phase errors Wideband signals}, doi={10.1007/978-3-319-52730-7_31} }- Jiaqi Zhen
Danyang Qin
Jie Yang
Yanchao Li
Year: 2017
Calibration Method of Gain-Phase Errors in Super-resolution Direction Finding for Wideband Signals
MLICOM
Springer
DOI: 10.1007/978-3-319-52730-7_31
Abstract
Most super-resolution direction finding methods need to know the array manifold exactly, but there is usually gain and phase errors in the array, which directly lead to the discordance of the channels. The paper proposed a novel calibration method in super-resolution direction finding for wideband signals based on spatial domain sparse optimization when gain and phase errors exist. First, the optimization functions are founded by the signals of every frequency, then the functions are optimized iteratively, consequently the information of all frequencies is integrated for the calibration, thus, the actual directions of arrival (DOA) can be estimated. Simulations have proved the method is appropriate for low signal to noise ratio (SNR) and small samples.
