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：2000
卷号：XXXIII Part B5/1
页码：485-492
出版社：Copernicus Publications
摘要：Terrestrial laser imaging systems offer a new means for rapid precise mapping of objects up to ranges of up to a few hundred metres from the instrument location. The high sampling frequency (e.g., several kilohertz) available fro m such instrumentation can provide a spatial data density of directly observed co-ordinates far in excess of that available with photogrammetric techniques. For structural monitoring applications, this permits measurement of entire surfaces rather than a few discrete points, thus providing a wealth of information about the deformation modes of a body. This paper conveys the findings of a preliminary study of the resolution and accuracy of a commercially available laser-scanning system. Testing was conducted on a first order EDM calibration baseline and on a three-dimensional deformation- monitoring network. Single point range accuracies of ± 3-5 cm (1 σ ) were achieved. Evidence of uncompensated systematic errors, probably due to instrumental set-up errors and target centre reduction, was detected
