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：2002
卷号：XXXIV-3/W4
出版社：Copernicus Publications
摘要：The Geoscience Laser Altimeter System aboard NASA's Ice, Cloud and land Elevation Satellite will record the height distribution of laser energy reflected from surfaces within 70 m diameter footprints. For land surfaces, post-processing of this waveform data will be used to estimate the within-footprint mean elevation and surface relief due to ground slope and roughness, vegetation cover, buildings and other structures. A methodology is described for validating the derived surface properties for vegetated and urbanized landscapes using a GLAS waveform simulator applied to high-resolution, airborne, scanning laser altimeter data being acquired by the Puget Sound Lidar Consortium (PSLC) in northwestern Washington state. The GLAS waveform simulator is being modified to operate on 3- dimensional representations of topography and vegetation cover with the incorporation of digital elevation models derived from the airborne laser data and representations of the spatial distribution of surface reflectance, the transmitted laser energy measured on a per- pulse basis by the GLAS instrument, and detector's field-of-view responsivity. The attributes of the PSLC airborne laser mapping data are also described
