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3D LASER SCANNING FOR DAM DEFORMATION MONITORING
Abstract
А possibility of using 3D laser scanning for collecting massive volumes of precise, high-resolution spatial data for deformation monitoring is discussed. This paper introduces laser scanning as an instrument which may be applicable to the field of dam deformation monitoring. The advantages of this technique for modeling and providing a much more valid representation of the actual surface shape are represented. Unlike traditional surveying techniques that collect hundreds of discrete data points over a period of several days’ laser scanners can measure several thousand points per second. This paper introduces laser scanning as an instrument which may be applicable to the field of deformation monitoring. Overview and principles of terrestrial and airborne 3D laser scanning are presented. Results of a calibration experiments are presented, providing an insight into the spatial performance of a laser scanning instrument. Some benefits and advantages of terrestrial laser scaning (TLS) in the field of dam deformation monitoring are given. Guidelines instead of conclusion about the technology and postprocesing of data gathered from TLS for its application for dam deformation monitoring are made.
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