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Sensors 2018, 18(3), 807; https://doi.org/10.3390/s18030807

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

1
Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
2
University of Chinese Academy of Sciences, Beijing 100190, China
*
Author to whom correspondence should be addressed.
Received: 30 December 2017 / Revised: 2 March 2018 / Accepted: 6 March 2018 / Published: 7 March 2018
(This article belongs to the Special Issue First Experiences with Chinese Gaofen-3 SAR Sensor)
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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. View Full-Text
Keywords: GF-3 satellite; PolSAR; quality assessment; crosstalk; channel imbalance GF-3 satellite; PolSAR; quality assessment; crosstalk; channel imbalance
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Jiang, S.; Qiu, X.; Han, B.; Hu, W. A Quality Assessment Method Based on Common Distributed Targets for GF-3 Polarimetric SAR Data. Sensors 2018, 18, 807.

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