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Water Depth Information Extraction with Multi-spectral Remote Sensing in Coral Reefs Region

Wang Jikun;Chen Zhenghua;Yu Kefu;Huang Rongyong;Wang Yinghui;School of Environment,Guangxi University;School of Marine Sciences,Guangxi University;Coral Reef Research Center,Guangxi University;  
Water depth inversion is of great important to coral reefs' protection and engineering construction of the coral reef region.As the correlation between the remote sensing radiance and the water depth is a very well,so the band ratio transform and the linear combination transform were adopted to the water depth inversion around coral reefs.Based on the complex topography of coral reefs,these two algorithms were optimized for the water depth inversion.Finally,our experimental results show that the improved ratio transform was suitable for retrieving water depths among 3~5 mand 5~10 m.While none of the models that mentioned in this paper performed well in water depth of 5~10 m,the preliminary conclusion was that coral reefs' special topographic caused it.
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