A fast evaluation method of channel imbalance of polarimetric SAR based on common distributed targets

doi:10.7523/j.issn.2095-6134.2019.02.017

Abstract

Abstract: There are a variety of algorithms in which the calibrated field and calibrator are used to calculate the channel imbalance, but they do not meet the need of normalized quality monitoring because of the limitations to area and revisit frequency. In this work, based on the statistical properties of ground objects' scattering, a fast evaluation method of channel imbalance of polarimetric SAR based on common distributed targets is proposed. The requirements of the method on the scattering characteristics of ground objects are deduced, and the statistical calculation methods are adopted to reduce the requirements. This method achieves the convenient and normalized evaluation of channel imbalance. The experiments of semi-physical simulation and of GF-3 measured data verify the effectiveness of the method.

Key words: SAR, pol SAR, quality evaluation, channel imbalance

CLC Number:

TN957.52

JIANG Sha, QIU Xiaolan, HAN Bing, HU Wenlong, LU Xiaojun. A fast evaluation method of channel imbalance of polarimetric SAR based on common distributed targets[J]. , 2019, 36(2): 280-288.

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