用气象卫星资料监测积雪的计算方法

用气象卫星资料监测积雪的计算方法

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Method-focused categoriesData-perspectiveRemote sensing analysis

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Chinese {{currentDetailLanguage}} Chinese

用气象卫星资料监测积雪的计算方法

(1)    观测数据的定标与订正:

定标公式:

订正公式:

式中,为各光谱通道观测的物理量;为个各通道的定标系数即斜率与截距;个通道观测的计数值;E为订正后的反射率,为定标后的反射率;为观测点的太阳天顶角。

(2)    几何校正公式:

式中,分别为北半球投影图中心点坐标;为投影图中单位长度可存放的像素点数;可根据投影图的分辨率任取;D为投影图中从极点到赤道的距离;为投影图的主经度;分别为卫星观测点N的地理经纬度。

(3)    积雪阈值:

式中,分别为积雪反射率和亮度温度阈值;为通用阈值;为修正阈值。

参考文献

    刘玉洁,袁秀卿,张红:用气象卫星资料监测积雪。环境遥感,199271

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How to Cite

《资源环境数学模型手册》 (2018). 用气象卫星资料监测积雪的计算方法, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/085a4d9d-9aee-4565-9562-23617a2c3edd
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zhangshuo
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initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
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Last modifier : 
zhangshuo
Last modify time : 
2020-12-17
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