| 高分四号静止卫星数据的地表反照率反演 |
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| 引用本文： | 孙越君,汪子豪,秦其明,韩谷怀,任华忠,黄敬峰. 高分四号静止卫星数据的地表反照率反演[J]. 遥感学报, 2018, 22(2): 220-233 |
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| 作者姓名： | 孙越君 汪子豪 秦其明 韩谷怀 任华忠 黄敬峰 |
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| 作者单位： | 北京大学地球与空间科学学院遥感与地理信息系统研究所;青岛市交通运输公共服务中心;空间信息集成与3S工程应用北京市重点实验室;地理信息基础软件与应用国家测绘地理信息局工程技术研究中心;浙江大学环境与资源学院农业遥感与信息技术应用研究所; |
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| 基金项目： | 高分辨率对地观测系统重大专项（编号：11-Y20A05-9001-15/16） |
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| 摘 要： | 地表反照率(Albedo)是描述地表辐射能量平衡的重要参数,为了获得高分四号(GF-4)静止卫星的地表反照率产品,构建了一种基于核驱动双向反射率分布(BRDF)模型的反照率反演方法。首先,探索核驱动BRDF模型对GF-4卫星数据的适用性,加入地表分类信息,为核系数赋初值,并引入鲍威尔迭代算法优化模型结果。然后,对BRDF模型进行角度积分获得各个波段的地表窄波段反照率。在此基础上,结合GF-4卫星光谱响应函数与光谱库,首次建立了将窄波段反照率到宽波段反照率的转换系数,并反演得到0.4—0.7μm和0.3—3.0μm的宽波段反照率。最后,利用Landsat 8卫星数据和MODIS地表反照率产品对基于GF-4卫星数据的地表反照率反演结果进行交叉验证。Landsat 8与GF-4的反照率结果对比表明,GF-4卫星可见光范围内的反照率反演结果精度为85.6%,短波范围内的反照率反演结果精度为93.4%;MODIS与GF-4的反照率结果对比表明,可见光范围的地表反照率精度达到87.7%,短波范围的地表反照率精度达到85.9%。这说明GF-4卫星地表反照率反演结果具有较高精度,GF-4卫星反照率产品具有一定应用潜力。
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| 关 键 词： | 高分四号(GF-4) 高频次 反照率 BRDF 静止卫星 |
| 收稿时间： | 2016-11-17 |
Retrieval of surface albedo based on GF-4 geostationary satellite image data |
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| SUN Yuejun,WANG Zihao,QIN Qiming,HAN Guhuai,REN Huazhong and HUANG Jingfeng. Retrieval of surface albedo based on GF-4 geostationary satellite image data[J]. Journal of Remote Sensing, 2018, 22(2): 220-233 |
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| Authors: | SUN Yuejun WANG Zihao QIN Qiming HAN Guhuai REN Huazhong HUANG Jingfeng |
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| Affiliation: | Institute of Remote Sensing and Geographical Information System, School of Earth and Space Science, Peking University, Beijing 100871, China;Qingdao Public Transportation Service Center, Qingdao 266061, China,Institute of Remote Sensing and Geographical Information System, School of Earth and Space Science, Peking University, Beijing 100871, China,Institute of Remote Sensing and Geographical Information System, School of Earth and Space Science, Peking University, Beijing 100871, China;Beijing Key Lab of Spatial Information Integration and 3S Application, Peking University, Beijing 100871, China;National Surveying and Mapping Geographic Information Engineering Technology Center of Geographic Information Basic Software and Application, Beijing 100871, China,Institute of Remote Sensing and Geographical Information System, School of Earth and Space Science, Peking University, Beijing 100871, China,Institute of Remote Sensing and Geographical Information System, School of Earth and Space Science, Peking University, Beijing 100871, China and Institute of Agricultural Remote Sensing and Information Technology Application, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China |
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| Abstract: | |
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| Keywords: | GF-4 satellite high frequency observation land surface Albedo BRDF geostationary orbit |
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