The problem of multi-channel amplitude and phase incongruity occurs when array antennas are used in a microwave imaging system. We divide multi-channel phase errors into two categories: the range deviation error and residue constant phase error. The effect of each category of error on imaging is analyzed and a calibration method using strong scattering point calibrator is proposed. All of our analyses and conclusions are verified by the experiments in the ground-based system developed in the National Key Laboratory of Microwave Imaging Technology.
HAN Kuo-Ye
,
WANG Yan-Ping
,
TAN Wei-Xian
,
HONG Wen
. Multi-channel phase error calibration for microwave imaging system based on array antennas[J]. Journal of University of Chinese Academy of Sciences, 2012
, 29(5)
: 630
-635
.
DOI: 10.7523/j.issn.2095-6134.2012.5.008
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