报告详情
Quality assessment of GF-2 and SuperView-1 data for marine remote sensing applications based on Sentinel-2
编号：1299
访问权限：仅限参会人
更新：2024-10-14 15:03:10 浏览：190次
张贴报告
报告开始：2025年01月16日 19:35（Asia/Shanghai）
报告时间：15min
所在会场：[S54] Session 54-Remote Sensing of Coastal Zone and Sustainable Development [S54-P] Remote Sensing of Coastal Zone and Sustainable Development
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摘要
The GF-2 and SuperView-1 satellites, launched by China in 2014 and 2016, offer spatial resolutions of 4 m and 2 m in visible and near-infrared bands. While widely applied across various fields, their suitability for oceanographic research has not been thoroughly assessed. In this study, we use data from Sentinel-2, known for its high calibration accuracy and advanced technical capabilities, as a reference to evaluate the performance of GF-2 and SuperView-1. We calculated the signal-to-noise ratio (SNR) for the GF-2, SuperView-1, and Sentinel-2 sensors to preliminarily assess their data quality. We also conducted cross-comparisons of top-of-atmosphere (TOA) reflectance among these sensors. The results demonstrate that the SNR of both Chinese satellites, GF-2 and SuperView-1, meets the requirements of water quality monitoring in the visible spectrum. Additionally, GF-2 showed a higher concordance with Sentinel-2' s TOA reflectance compared to SuperView-1. After applying a linear correction, TOA data from both Chinese sensors aligned more closely with Sentinel-2, effectively reducing systematic biases in the visible bands. This harmonization is crucial for improving the interoperability and comparability of multi-source satellite data. Recognizing the remaining discrepancies between GF-2, SuperView-1, and Sentinel-2, we emphasize the need for data transformations when utilizing GF-2 and SuperView-1 in comparative oceanographic studies. This study improves the accuracy of Chinese high-resolution sensors data and lays a foundation for advancing the use of Chinese satellite data in marine ecosystems.
关键词
GF-2; SuperView-1; Sentinel-2; signal-to-noise ratio (SNR); top-of-atmosphere (TOA) reflectance
报告人
Yifan Xu
Master Jimei University稿件作者
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重要日期
-
会议日期
01月13日
2025
至01月17日
2025
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09月27日 2024
初稿截稿日期
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01月17日 2025
注册截止日期
主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
承办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
Department of Earth Sciences, National Natural Science Foundation of China
联系方式
- Kejing GU
- xm******@xmu.edu.cn
- +86*********
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