| SeaWiFS与HY-1卫星COCTS的系统交叉辐射校正 |
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| 引用本文： | 蒋兴伟,牛生丽,唐军武,邵岩.SeaWiFS与HY-1卫星COCTS的系统交叉辐射校正[J].遥感学报,2005,9(6):680-687. |
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| 作者姓名： | 蒋兴伟 牛生丽 唐军武 邵岩 |
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| 作者单位： | 国家海洋卫星应用中心,北京,100081 |
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| 摘 要： | 海洋一号(HY-1)卫星是中国第一颗海洋环境遥感卫星。由于卫星上没有太阳定标装置,而且其上搭载的水色水温扫描仪(COCTS)一直存在漂移的问题,所以必须不断对其进行辐射校正,所述内容就是其辐射校正方法之一。美国宽视场水色扫描仪(SeaW iFS)提供了高精度的水色数据,如一类水体上的离水辐亮度及叶绿素浓度等被国际水色遥感界作为参照的基准。以SeaW iFS反演的归一化离水辐亮度和气溶胶参数对COCTS遥感器的辐射校正系数进行了系统校正。该方法可以对COCTS的定标系数进行长期监测。结果表明,校正后的COCTS水色数据产品精度得到了很大的提高。
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| 关 键 词： | 水色遥感 遥感器辐射校正 交叉辐射校正 COCTS SeaWiFS |
| 文章编号： | 1007-4619(2005)06-0680-08 |
| 收稿时间： | 2004-03-17 |
| 修稿时间： | 2004-09-08 |
The System Cross-Calibration Between SeaWiFS and HY-1 COCTS |
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| JIANG Xing-wei,NIU Sheng-li,TANG Jun-wu and SHAO Yan.The System Cross-Calibration Between SeaWiFS and HY-1 COCTS[J].Journal of Remote Sensing,2005,9(6):680-687. |
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| Authors: | JIANG Xing-wei NIU Sheng-li TANG Jun-wu and SHAO Yan |
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| Institution: | National Satellite Ocean Application Service, Beijing 100081 , China |
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| Abstract: | TheHY-1 satellite is the firstsatellite for remote sensing ofocean environment in China. Because there isno
onboard calibration facility and the coefficientofChineseOceanColor&Temperature Scanner(COCTS) hasbeen drifting,
calibrations and correctionsmustbe carried out continually. One of the calibration methods is described in this paper.
The Sea-viewingW ide Field-of-view Scanner(SeaW iFS) supplies highly accurate ocean color satellite data acknowleged
internationally, its data for case Iwater, such aswater-leaving radiance and chlorophyll concentration, etc., is regarded
as the standard by international fields on remote sensing of ocean color. Therefore, we can adopt the calibrate COCTS
continually by the normalizedwater-leaving radiance and aerosolparameters derived from SeaW iFS. Thismethod can also
be used tomonitor the long-term charge of calibration coefficientofCOCTS. Our results indicate that the accuracy of the
data retrieved from COCTS can be greatly mi proved after the cross-calibration. |
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| Keywords: | remote sensing of ocean color calibration of sensor system cross-calibration COCTS SeaWiFS |
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