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湖泊科学  2009 

叶绿素a浓度的动态峰反演方法

DOI: 10.18307/2009.0210

Keywords: 叶绿素a,反演,动态峰

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Abstract:

叶绿素a是影响内陆水体光学特性的主要水色要素之一.作为反映水体富营养化程度的重要参数指标,国内外学者发展了大量的算法和模型进行水体中叶绿素a浓度的遥感反演.这些算法均使用固定的波段位置.叶绿素a的特征谱段随着其浓度的变化存在一定的位移,尤其是701nm反射峰,其存在着明显的"红移"现象,因此使用固定波段势必带来一定的误差.通过对不同叶绿素a浓度水样的光谱曲线分析,提出动态峰反演叶绿素a浓度的方法.使用反射峰范围最大值和吸收谷范围最小值,而不是固定波长位置进行建模,以求获得更高的反演精度.

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