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.

由于经验模型的缺陷性，还提出了基于TM数据的水体混合光谱分析模型，同时分析了端元光谱提取方法对模型求解的影响。

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The result of error analysis shows that the relative error can be reduced efficiently by use of spectrometers with higher spectral resolution and longer spectral band to measure and calculate.

误差分析结果表明，通过提高光谱的最小分辨力及选择较长的光谱波段进行测量计算；

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