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：942-952
出版社：Copernicus Publications
摘要：Oblique viewing sensors have been proposed for the Multispectral ResourceSampler (MRS), a follow-on satellite to the Thematic Mapper/Landsat Dand proposed by the United States for launch in the late 1980's. If anoblique viewing sensor is to be included on the MRS, then the potential informationin oblique measurements needs to be better understood .This paper analyzes the reflectance response with view angle of wheat,excluding atmospheric effects but otherwise simulating the response of amultispectral scanner. The analysis is based upon spectra taken continuouslyin wavelength from 0.45 to 2 .4 ~at more than 1200 view/illuminationdirections using an Exotech model 20C spectral radiometer . Data were acquiredsix meters above four wheat canopies, each at a different growthstage.The analysis shows that the canopy reflective response is a pronouncedfunction of illumination angle, scanner view angle, and wavelength. Thevariation is greater at low solar ~levations compared to high solar elevations.
