Direct inversion of shallow-water bathymetry from EO-1 hyperspectral remote sensing data |
| |
Authors: | Zhishen Liu and Yan Zhou |
| |
Affiliation: | Zhishen Liu and Yan Zhou Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003, China |
| |
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 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. |
| |
Keywords: | |
本文献已被 CNKI 维普 等数据库收录! |
|