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：2007
卷号：XXXVI-3/W52
页码：71-76
出版社：Copernicus Publications
摘要：There is a growing body of literature that points to the value of using the intensity measures of the backscattered laser light in addition to the pulse range measurements for studying a range of environments, including forests. However, there is a lack of literature that has validated the lidar intensity values captured in a campaign, and therefore limited understanding in the full utility of these data. This paper presents preliminary analyses of lidar intensity values captured over an area of woodland in the UK in comparison with concurrently acquired HyMap data, which measures the passive reflected radiation at the same wavelengths. The study concludes that lidar intensity values are broadly representative of the NIR radiation reflected from the forested landscape and therefore could be utilised. However, there is a real need for calibration of intensity data, particularly if flight lines are to be merged. Furthermore, if lidar intensity values are to be interpolated into a raster and used in a similar way to conventional image analysis, the selected interpolation technique significantly affects the resultant lidar values
关键词：Lidar intensity; interpolation; coniferous; deciduous; validation; HyMap; canopy height model
