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地物光谱特征是遥感机理的重要内容,也是遥感应用研究的重要依据;既是传感器波段选择和设计的依据,又是对遥感数据进行解译及各种定量分析的基础。本研究以深处内陆盆地、典型的干旱区于田绿洲作为研究区,利用便携式野外光谱仪,对研究区内主要植被地物进行了地面调查及反射光谱曲线测量;分析了植被的反射光谱曲线,并对植被光谱进行了导数、“红边”效应等研究,对比了健康植被和非健康植被光谱特征的差别,对研究区内的其他典型地物光谱特征也进行了分析。所得结论对于干旱区地物光谱特征基础研究具有重要意义。
The feature of terrestrial spectral features is an important part of the remote sensing mechanism and an important basis for the study of remote sensing applications. It is not only the basis for the selection and design of the sensor band, but also the basis for interpreting and quantitatively analyzing remote sensing data. In this study, Yutian Oasis is the deep inland basin and the typical arid region as the research area. Ground surface survey and reflection spectrum curve measurement of the main vegetation features in the study area are carried out by portable field spectrometer. The reflection spectral curve, The derivative of the vegetation spectrum, the “red edge” effect and so on were compared. The differences of the spectral characteristics between the healthy vegetation and the unhealthy vegetation were compared. The spectral characteristics of other typical vegetation in the study area were also analyzed. The conclusions obtained are of great significance for the basic research on the spectral characteristics of terrestrial objects in arid areas.