一种基于GF-3极化SAR数据公共分布式目标的质量评估方法。

A Quality Assessment Method Based on Common Distributed Targets for GF-3 Polarimetric SAR Data.

作者信息

Jiang Sha, Qiu Xiaolan, Han Bing, Hu Wenlong

机构信息

Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China.

University of Chinese Academy of Sciences, Beijing 100190, China.

出版信息

Sensors (Basel). 2018 Mar 7;18(3):807. doi: 10.3390/s18030807.

DOI:10.3390/s18030807

PMID:29518959

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5877213/

Abstract

The GaoFen-3 (GF-3) satellite, launched on 10 August 2016, is the first C-band polarimetric synthetic aperture radar (PolSAR) satellite in China. The PolSAR system of GF-3 can collect a significant wealth of information for geophysical research and applications. Being used for related applications, GF-3 PolSAR images must be of good quality. It is necessary to evaluate the quality of polarimetric data and achieve the normalized quality monitoring during 8-year designed life of GF-3. In this study, a new quality assessment method of PolSAR data based on common distributed targets is proposed, and the performance of the method is analyzed by simulations and GF-3 experiments. We evaluate the quality of GF-3 PolSAR data by this method. Results suggest that GF-3 antenna is highly isolated, and the quality of calibrated data satisfies the requests of quantitative applications.

摘要

高分三号（GF-3）卫星于2016年8月10日发射，是中国首颗C波段极化合成孔径雷达（PolSAR）卫星。GF-3的PolSAR系统可为地球物理研究和应用收集大量丰富信息。用于相关应用时，GF-3的PolSAR图像必须具有良好质量。有必要在GF-3的8年设计寿命期间评估极化数据质量并实现标准化质量监测。在本研究中，提出了一种基于常见分布式目标的PolSAR数据质量评估新方法，并通过仿真和GF-3实验分析了该方法的性能。我们用此方法评估了GF-3的PolSAR数据质量。结果表明，GF-3天线具有高度隔离性，校准后的数据质量满足定量应用要求。