Abstract
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 atmo-spheric
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.
© 2011 Chinese Optics Letters
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