基于Landsat-TM和测量地物光谱耦合分析——以开封地区为例

地物光谱数据是遥感技术之基础资料,是建立地面数据和遥感数据关系的桥梁;在对遥感机理和地物光谱理论深入理解的基础上,用回归分析思想探讨遥感影像光谱与实测相应地物光谱的耦合程度,两者的相关系数ρ=0.8689,相关性较好,因此可以将经过大气校正后的影像光谱值代替实测地物的光谱值进行相关的分析。

Analysis of surface feature special based on Landsat-TM

Surface feature spectrum data is the basic materials of remote sensing technology,and the relation bridge to establish ground data and remote sensing.On the basis of understanding to remote sensing mechanism and surface feature spectrum in the field theory thoroughly,by using regression method this paper approaches the coupling degree of the image spectrum of remote sensing and the corresponding surface feature spectrum in the field of Open-air measurement,and the information of the desertified land is drawn utilizing the spectrum characteristic of surface feature on the basis of this foundation.We can get reflecting rate image after the pretreatment of remote sensing data,TM image,and comparatively analyzes the anisochronous spectrum data and it and receives their coefficient correlation value,0.8689.so we can use reflecting rate image to analyze spectrum data replacing the corresponding surface feature spectrum in the field of Open-air measurement.