基于海表耀斑中红外基准NPP/VIIRS反射通道在轨验证

将美国NPP卫星可见光红外成像辐射仪(Visible Infrared Imaging Radiometer,VIIRS)的中红外通道(中心波长3.697μm)作为检验基准,使用菲涅尔反射定理建立中红外和被验证通道的海表反射率关系,对四个太阳反射通道(中心波长位于0.672、0.862、1.238和1.602μm)进行了基于海水表面耀斑区反射率精度验证并深入分析该方法的不确定度.结果表明:VIIRS四个通道的验证不确定度分别为3.8%、3.9%、4.1%和4.1%,这一方法可实现VIIRS部分光学通道的在轨较高精度验证....

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Published in红外与毫米波学报 Vol. 36; no. 6; pp. 694 - 700
Main Author 景欣;晏磊;胡秀清;贺丽琴;赵帅阳;胡兴帮;徐寒列;林沂;马蔼乃
Format Journal Article
LanguageChinese
Published 北京大学空间信息集成与3S工程应用北京市重点实验室,北京,100871%国家卫星气象中心,北京,100081 2017
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ISSN1001-9014
DOI10.11972/j.issn.1001-9014.2017.06.010

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Summary:将美国NPP卫星可见光红外成像辐射仪(Visible Infrared Imaging Radiometer,VIIRS)的中红外通道(中心波长3.697μm)作为检验基准,使用菲涅尔反射定理建立中红外和被验证通道的海表反射率关系,对四个太阳反射通道(中心波长位于0.672、0.862、1.238和1.602μm)进行了基于海水表面耀斑区反射率精度验证并深入分析该方法的不确定度.结果表明:VIIRS四个通道的验证不确定度分别为3.8%、3.9%、4.1%和4.1%,这一方法可实现VIIRS部分光学通道的在轨较高精度验证.
Bibliography:JING Xin1, YAN Lei1, HU Xiu-Qing2, HE Li-Qin1 ,ZHAO Shuai-Yang1, HU Xing-Bang1, XU Han-Lie2, LIN Yi1, MA Ai-Nai1 (1. Beijing Key Laboratory of Spatial Information Integration and Its Application, Peking university, Beijing 100871 China; 2. National Satellite Meteorological Center, Beijing 100081 China)
This paper built up the reflectance relationship between MWIR and solar reflectance bands based on Fresnel's law. VIIRS( Visible Infrared Imaging Radiometer) mid-infrared band( 3. 697μm)has been used as the reference standard to validate the four solar reflectance bands( 0. 672、0. 862、1. 238 and 1. 602 μm) on sea surface sun glint regions. Finally the uncertainties of this validation model were analyzed. The results show that the uncertainties of the four solar reflectance bands are 3. 8%、3. 9%、4. 1%、4. 1%,respectively. Therefore,the model proposed in this paper can be used for optical inter bands cross validation.
31-1577/TN
mid-infrared, sun-glint, visible infrared imaging radiometer ( VIIRS ), calibration/valid
ISSN:1001-9014
DOI:10.11972/j.issn.1001-9014.2017.06.010