Technology Application |
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THE CORRELATION BETWEEN WATER DEPTH AND
REFLECTANCE SPECTRA IN RADIAL SUBMARINE
SAND RIDGE SYSTEMS OF JIANGSU PROVINCE |
DU Xin-Dong, TIAN Qing-Jiu, WANG Jing-Jing, WANG Xiang-Cheng |
International Institute for Earth Science, Nanjing University, Nanjing 210093 |
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Abstract Sand drift is of vital importance in water-depth remote sensing, as shown by an analysis of the
reflectance spectral data and measured water depth data. The concentration of the sand drift decides the direction
of the correlation coefficient between the water depth and the reflectance spectra: the correlation coefficient is
lower than 0 in the clear area and higher than 0 in the high turbidity area. On such a basis, the water body can
be classified before depth extraction so as to improve the depth extraction precision. The high spectral remote
sensing technique can raise the extraction precision based on the simulation analysis of different spectra.
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Keywords
remote sensing image
geometric rectification
fast algorithm
personal computer
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Issue Date: 21 July 2009
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