Abstract
通过对2004年8月19日太湖Hyperion高光谱遥感数据的处理和分析,文章首先采用比值和一阶微分处理技术进行了叶绿素a浓度的估算．为了弥补此两种方法在模型的适用性和通用性方面的不足,本文尝试了利用混合光谱分析模型进行太湖水体叶绿素a浓度的提取和成图．实验结果说明高光谱遥感数据Hyperion可以进行水体叶绿素a浓度的监测,并且作为高光谱处理技术之一的混合光谱分析技术是水体叶绿素a浓度估算的另一条佳径．;Processed and analyzed the hyperspectral data-Hyperion on August 19<sup>th</sup> 2004, we estimated chloro-phyll-a concentration using ratio and differential coefficient method in Lake Taihu. But these two models <sup>,</sup> applicability confined in single area and single phase. In this paper we used mixing spectral analysis model for extracting chlorophyll-a concentration and mapping the distribution of chlorophyll-a concentration. The result shows that the new style of remote sensing data Hyperion can be used for monitoring chlorophyll-a concentration，and that mixing spectral analysis is an optimal method for estimating water chlorophyll-a concentration.
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