Multi-channel phase error calibration for microwave imaging system based on array antennas

doi:10.7523/j.issn.2095-6134.2012.5.008

Abstract

Abstract: 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.

Key words: microwave imaging, array antennas, multi-channel phase error, calibration, synthetic aperture radar(SAR)

CLC Number:

TN957

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]. , 2012, 29(5): 630-635.

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Multi-channel phase error calibration for microwave imaging system based on array antennas

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