Radiometric Cross-Calibration of the Wide Field View Camera Onboard GaoFen-6 in Multispectral Bands

doi:10.3390/rs12061037

CIOMP OpenIR

	Radiometric Cross-Calibration of the Wide Field View Camera Onboard GaoFen-6 in Multispectral Bands
	A. X. Yang,B. Zhong,L. F. Hu,S. L. Wu,Z. P. Xu,H. B. Wu,J. J. Wu,X. S. Gong,H. B. Wang and Q. H. Liu
	2020
发表期刊	Remote Sensing
卷号	12 期号:6 页码:21
摘要	GaoFen6 (GF-6), successfully launched on June 2, 2018, is the sixth satellite of the High-Definition Earth observation system (HDEOS). Although GF-6 is the first high-resolution satellite in China to achieve precise agricultural observation, it will be widely used in many other domains, such as land survey, natural resources management, emergency management, ecological environment and so on. The GF-6 was not equipped with an onboard calibration instrument, so on-orbit radiometric calibration is essential. This paper aimed at the on-orbit radiometric calibration of the wide field of view camera (WFV) onboard GF-6 (GF-6/WFV) in multispectral bands. Firstly, the radiometric capability of GF-6/WFV is evaluated compared with the Operational Land Imager (OLI) onboard Landsat-8, Multi Spectral Instrument (MSI) onboard Sentinel-2 and Moderate Resolution Imaging Spectroradiometer (MODIS) onboard Terra, which shows that GF-6/WFV has an obvious attenuation. Consequently, instead of vicarious calibration once a year, more frequent calibration is required to guarantee its radiometric consistency. The cross-calibration method based on the Badain Jaran Desert site using the bi-directional reflectance distribution function (BRDF) model calculated by Landsat-8/OLI and ZY-3/Three-Line Camera (TLC) data is subsequently applied to GF-6/WFV and much higher frequencies of calibration are achieved. Finally, the cross-calibration results are validated using the synchronized ground measurements at Dunhuang test site and the uncertainty of the proposed method is analyzed. The validation shows that the relative difference of cross-calibration is less than 5% and it is satisfied with the requirements of cross-calibration.
DOI	10.3390/rs12061037
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64822
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	A. X. Yang,B. Zhong,L. F. Hu,S. L. Wu,Z. P. Xu,H. B. Wu,J. J. Wu,X. S. Gong,H. B. Wang and Q. H. Liu. Radiometric Cross-Calibration of the Wide Field View Camera Onboard GaoFen-6 in Multispectral Bands[J]. Remote Sensing,2020,12(6):21.
APA	A. X. Yang,B. Zhong,L. F. Hu,S. L. Wu,Z. P. Xu,H. B. Wu,J. J. Wu,X. S. Gong,H. B. Wang and Q. H. Liu.(2020).Radiometric Cross-Calibration of the Wide Field View Camera Onboard GaoFen-6 in Multispectral Bands.Remote Sensing,12(6),21.
MLA	A. X. Yang,B. Zhong,L. F. Hu,S. L. Wu,Z. P. Xu,H. B. Wu,J. J. Wu,X. S. Gong,H. B. Wang and Q. H. Liu."Radiometric Cross-Calibration of the Wide Field View Camera Onboard GaoFen-6 in Multispectral Bands".Remote Sensing 12.6(2020):21.

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