WIT Press


Laserscanning For DEM Generation

Price

Free (open access)

Paper DOI

10.2495/GIS980231

Volume

21

Pages

7

Published

1998

Size

836 kb

Author(s)

Uwe Lohr

Abstract

During the last years laserscanning has been accepted as a technique to generate digital elevation models (OEMs). Generally laserscanner systems consist of a multi-sensor package integrated into an airborne platform for the survey flight. The TopoSys laserscanner system is designed to produce digital elevation models (OEMs) of the environment at a maximum accuracy of 0.5 m in x and y and 0.1 m in z. The exceptional measurement frequency of 80000 measurements per second result in about four measurements per nf on ground. This measurement density and the regular scan pattern (parallel lines) form the basis for high quality OEMs. The throughout digital data recording as well as the mainly automated data processing allows to generate OEMs of large areas at a short production time. The basic output of the production line is a raster DSM (Digital S

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