本文通过对4个感染不同等级稻叶瘟的水稻冠层反射光谱进行测试，并对光谱反射曲线进行微分分析，研究了绿光区、红光区和近红外区反射光谱的变异特征。
Rice spectrum features at green, red and near infrared regions were studied by measuring and analysing rice canopy reflectance and differential spectrums with 4 levels of rice leaf blast.
经包络线去除后的土壤光谱反射率归一化到0～1.0之间，可快速有效地突出土壤光谱曲线吸收和反射特性。
After the continuum-removal, the reflectance is normalized to a range of 0-1.0. This enhances the soil absorption and reflection spectrum.
植物的反射光谱曲线具有显著的特征。
在光谱反射率曲线的微分图上显示出蓝移。
The differential curve of spectral reflectance assumes a hypsochromic shift.
大多数天然物质表面的光谱反射率曲线比较平滑，可视为几个基向量的线性组合。
Since the vast majority of reflectance spectra for surfaces are smooth functions, each reflectance spectrum can be represented as the weighted sum of basis functions.
大多数天然物质表面的光谱反射率曲线比较平滑，可视为几个基向量的线性组合。
Since the vast majority of reflectance spectra for surfaces are smooth functions, each reflectance spectrum can be represented as the weighted sum of basis functions.
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