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遥感与数字地球研究所 [1]
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会议论文 [1]
发表日期
2008 [1]
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Remote chlorophyll-a retrieval in eutrophic inland waters by concentration classification Taihu Lake case study
会议论文
International Conference on Earth Observation Data Processing and Analysis, ICEODPA,, Wuhan, China, December 28, 2008 - December 30,2008
Du, Cong
;
Wang, Shixin
;
Zhou, Yi
;
Yan, Fuli
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提交时间:2014/12/07
In order to improve the precision of phytoplankton chlorophyll-a (chla) concentration retrieval
this study classified the data into two groups (the high and the low) by chla concentration with the threshold of 50gA&bullL-1. And then build the statistical models for each group. Particularly
a modifying factor OSS/TSS was used to unmixing the spectra in the low model to improve the low relationship between spectral reflectance and chla concentrations. As a result
the concentration classification model allowed estimation of chla with a root mean square error (RMSE) of 21.12gA&bullL-1 and the determination coefficient (R2) was 0.92
comparing with RMSE of chla estimation was 35.72gA&bullL-1 and R2=0.72 in the traditional model. It shows that concentration classification is a helpful method for accurate remote chla retrieval in eutrophic inland waters. 2008 SPIE.
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