针对水面以上光谱采集法中对垂直测量的质疑,利用2008年10月至2009年5月同时用垂直和倾斜测量两种测量方法采集的69个有效样本,从光谱反射率的相关性、与实验室叶绿素浓度反演模型等方面进行对比分析,结果显示两种光谱采集法得到的光谱数据具有高度一致性,都适合做水质的反演建模.另外从遥感反演的不确定性、光谱仪视场与水质采集区域的空间一致性等方面,说明垂直测量虽然没有考虑天空光等影响,但光谱反射率的计算同样消除了大部分不确定因素,完全适合做反演模型的建构及水质光谱特征研究.%The 69 valid samples from Oct. 2008 to May 2009 were collected with the vertical and inclined spectral sampling methods and then the correlation was studied with two spectral reflectance and inversion models built between chlorophyll concentration and the spectral characteristics respectively. The results showed that the two spectra have a high degree of consistency and both are suitable for inversion of the water quality,although the impact of the sky light wasn't considered,but the calculation of spectral reflectance still eliminated most of the uncertainties, therefore, the vertical spectral sampling is entirely suitable for building the inversion model of water quality and studying the spectral features.
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