期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1980
卷号：XXIII Part B7 + B8
页码：382-393
出版社：Copernicus Publications
摘要：This paper discusses the problems relat i ve to the determination of the spectralsignature of natural surfaces : bare soils and vegetative canopies.It gives with some Gxamp les the order of magnit ude of the spectral signaturevariability as a function of methodology and experimental conditions.The spectral signature of a natural surface, which can be defined as therelative spectral distribution of the radiant energy reflected or emittedby this one, can vary on a same point in a relativel y important way, infunction of numerous factors depending on the measuring equipment, or themethod of measurement, or the experimental conditions.This paper will mainl y dea l with the problems relative to the determinationof spectral signature of vegetative canopies near the ground surface infunction of methodol ogy and experimental conditions.
