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极化定标是极化SAR数据用于图像解译和定量参数反演的关键步骤。综述了国内外极化SAR定标技术及应用研究的主要成果,着重介绍极化SAR定标技术发展以来取得的多种关键算法进展,系统梳理包括点目标定标算法、分布目标定标算法、法拉第旋转校正算法等技术原理介绍、参数定义估计及技术脉略发展分析,并讨论各技术方法在机载及星载SAR系统定标领域取得的应用发展现状,同时逐步分解该技术领域目前面临的技术难点及算法发展。最后探讨分析极化SAR定标技术发展中的未来需求难点和继续需要解决的问题,为研究人员进一步推动极化SAR定标技术发展提供参考。
Polarization scaling is a key step in the interpretation of polarimetric SAR data and in the inversion of quantitative parameters. The main achievements of the domestic and international research on polarimetric SAR calibration technology and its applications are reviewed. The progress of many key algorithms made since the development of polarimetric SAR calibration technology are emphatically introduced. The system combing includes the point target calibration algorithm, the distributed target calibration algorithm, Faraday rotation correction algorithm introduction of the principle of the technology, the definition of parameters and the development of technology strategy analysis and discussion of various technical methods in the field of airborne and spaceborne SAR system calibration application of the status quo, while the gradual decomposition of the technology are currently facing Technical difficulties and algorithm development. Finally, it is discussed that the difficulties in the future of the development of polarization SAR calibration technology and the problems that need to be solved continue, and provide reference for researchers to further promote the development of polarization SAR calibration technology.