Establishment of a hyperspectral evaluation model of ocean color satellite-measured reflectance

作     者：MAO ZhiHua*,CHEN JianYu,HUANG HaiQing,HE XianQiang & GONG Fang State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China 

作者机构：State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography State Oceanic Administration 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2010年第53卷第9期

页      面：1891-1902页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 07[理学] 0707[理学-海洋科学] 070701[理学-物理海洋学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.40576080,40730843) the National High-Tech Research & Development Program of China(Grant Nos.2007AA12Z182,2002AA639220) the National Science & Technology Pillar Program(Grant Nos.2008BAC42B02,908-01-wy03) 

主　　题：hyperspectral remote sensing CMODIS reflectance evaluation satellite ocean color 

摘      要：The accuracy of the satellite-measured reflectance is a key question for data processing and oceanographic applications.A hyperspectral satellite remote sensing reflectance evaluation model(HRSREM) was developed to evaluate the accuracy of the satellite measured *** model can compute the total reflectance at the top of the atmosphere(TOA) according to observation conditions of satellites,based on a radiative transfer model with the consideration of multiple scattering effects and atmospheric absorption *** performance of the HRSREM model was examined by Gordon’s algorithms,showing that the relative errors of the Rayleigh scattering reflectance and the aerosol scattering reflectance are less than 2%.The model can also compute the sky reflectance which can be validated by in-situ *** two sky reflectances match well with a spectral average error of 5.4%.The relative error of the total reflectance of the model,verified by sea-viewing wide field-of-view sensor(SeaWiFS) data,is about 3.5%.Therefore,the total reflectances at TOA,computed by the model,can be taken as reference values to evaluate the accuracy of satellite *** model was used to evaluate the accuracy of the hypersptral satellite(Hyperion) remote sensing *** Hyperion reflectance matches the total reflectance of HRSREM very well at visible and near-infrared bands with an average error of 7.3%,while the status of calibration coefficients at shortwave infrared bands are not stable with a large spectral average error of 63.5%.The reflectance evaluation of a moderate resolution imaging spectrometer(CMODIS) data indicated that relative errors are large,especially at near-infrared bands with relative errors more than 100%.The calibration coefficients of CMODIS,obtained from laboratory measurements,are not *** CMODIS data should be recalibrated for oceanographic *** performance of the HRSREM model is effective in evaluating satellite data and its