Thematic Mapper(TM) data can be used to estimate chlorophyll-a concentration of water body and monitor the quality of inland water.There are different models for TM estimating Chlorophyll-a concentration,and the major model is empirical regression model.In this paper we build chlorophyll-a models based on TM data,in which the traditional band ratio approach and mixing spectral analysis model were used.And we also analyzed the method of end-member extraction.The correlation coefficient and rooted mean square errors were calculated,and the results of chlorophyll-a concentration gained from these models and those gained from the analysis in lab were compared,the result shows that the mixing spectral model for estimating Chlorophyll-a concentration is a optimal method.
WEN Jian-Guang, XIAO Qing, LIU Qin-Huo, ZHOU Yi
. Extraction of Chlorophyll-a Concentration Based on Spectral Unmixing Model in Taihu Lake Water[J]. SCIENTIA GEOGRAPHICA SINICA, 2007
, 27(1)
: 92
-97
.
DOI: 10.13249/j.cnki.sgs.2007.01.92
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