Direct inversion of shallow-water bathymetry from EO-1 hyperspectral remote sensing data  

作　　者：刘智深 周燕 

机构地区：[1]Ocean Remote Sensing Institute, Ocean University of China

出　　处：《Chinese Optics Letters》2011年第6期5-8,共4页中国光学快报（英文版）

基　　金：supported by the Key Funds Programof the National Natural Science of China under Grant No. 60638020

摘　　要：Using the US National Aeronautics and space Administration （NASA） Earth Observing-1 Mission （EO-1） hyperion hyperspectral remote sensing data, we study the shallow-water bathymetry inversion in Smith Island Bay. The fast line-of-sight atmospheric analysis of spectral hypercubes module is applied for atmospheric correction, and principal component analysis method combined with scatter diagram and maximum likelihood classification is used for seabed classification. The diffuse attenuation coefficient Kd is derived using quasi-analytical algorithm （QAA）, which performs well in optically deep water. Kd obtained from QAA requires correction, particularly those derived in some coastal areas with optically shallow water and calculated by direct inversion based on radiative transfer theory to obtain the bathymetry. The direct inversion method derives the water depth quickly, and matches the results from optimized algorithm.Using the US National Aeronautics and space Administration （NASA） Earth Observing-1 Mission （EO-1） hyperion hyperspectral remote sensing data, we study the shallow-water bathymetry inversion in Smith Island Bay. The fast line-of-sight atmospheric analysis of spectral hypercubes module is applied for atmospheric correction, and principal component analysis method combined with scatter diagram and maximum likelihood classification is used for seabed classification. The diffuse attenuation coefficient Kd is derived using quasi-analytical algorithm （QAA）, which performs well in optically deep water. Kd obtained from QAA requires correction, particularly those derived in some coastal areas with optically shallow water and calculated by direct inversion based on radiative transfer theory to obtain the bathymetry. The direct inversion method derives the water depth quickly, and matches the results from optimized algorithm.

关 键 词：Algorithms Coastal zones Earth (planet) Maximum likelihood estimation NASA Principal component analysis Remote sensing Space optics 

分 类 号：P237[天文地球—摄影测量与遥感]