红外与毫米波学报, 2017, 36 (6): 694, 网络出版: 2018-01-04
基于海表耀斑中红外基准NPP/VIIRS反射通道在轨验证
NPP/VIIRS solar reflectance bands radiation validation based on mid-infrared reference standard on sea surface sun glint sites
中红外 海面耀斑 可见光红外成像辐射仪(VIIRS) 定标验证 菲涅尔定律 mid-infrared sun-glint visible infrared imaging radiometer (VIIRS) calibration/validation Fresnel Law
摘要
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3.697 μm)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1.602 μm)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.
Abstract
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 (3697μm) has been used as the reference standard to validate the four solar reflectance bands (0.672、0.862、1238 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.
景欣, 晏磊, 胡秀清, 贺丽琴, 赵帅阳, 胡兴帮, 徐寒列, 林沂, 马蔼乃. 基于海表耀斑中红外基准NPP/VIIRS反射通道在轨验证[J]. 红外与毫米波学报, 2017, 36(6): 694. JING Xin, YAN Lei, HU Xiu-Qing, HE Li-Qin, ZHAO Shuai-Yang, HU Xing-Bang, XU Han-Lie, LIN Yi, MA Ai-Nai. NPP/VIIRS solar reflectance bands radiation validation based on mid-infrared reference standard on sea surface sun glint sites[J]. Journal of Infrared and Millimeter Waves, 2017, 36(6): 694.
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