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在遥感技术系统中,地物波谱的研究是基础理论研究。我们必须根据地物波谱特征来选择传感器的波段;根据地物波谱的特征来校正大气传输过程中遥感信息的失真;根据地物波谱的特征来进行目视解译;根据地物波谱的特征来引导数字图像识别。因此,美国一些大学的研究生,入学后首先要用三个月进行野外地物波谱测试,以加深对遥感信息的理解。测定的地物波谱被分门别类归档存入数据库,这对上述四方面的研究能提供许多便利。地物波谱特性,主要分为4个波段:即反射光谱段(0.3～2.5微米),反射-发射波谱段(3～5微米),发射波谱段(8～14微米)和微
In the remote sensing technology system, the study of feature spectrum is the basic theoretical research. We must select the band of the sensor according to the spectral characteristics of the object; correct the distortion of the remote sensing information during the atmospheric transmission according to the feature of the object’s spectrum; visual interpretation according to the features of the object’s spectrum; and guide the digital image recognition according to the feature of the object’s spectrum . Therefore, postgraduates from some universities in the United States will first use three months to conduct spectral testing of the field map in order to deepen the understanding of remote sensing information. The measured geomorphological spectra are archived and stored in separate databases, which provides many advantages for the above four aspects of research. Spectral characteristics of ground objects are mainly divided into four bands: the reflection spectrum (0.3-2.5 microns), the reflection-emission spectrum (3-5 microns), the emission spectrum (8-14 microns) and the micro