Open Journal Systems

Methods to evaluate the spot size of terrestrial laser scanners

Juliana Dias Wutke, Jorge Antonio Silva Centeno


This study deals with the development of methods for the evaluation of the
resolution of terrestrial laser scanners. For this purpose, experiments were
accomplished using the laser scanner Cyrax HDS 3000, that was produced by
Leica-Geosystems. Two methods for the evaluation of the resolution and the beam
are compared: the direct method, based on the analysis of the capacity of the laser
beam to penetrate in the spaces of a grid, and an analytical method, that models the
resolution of the beam based on the border effect. The proposed methods are
efficient for evaluation of the resolution of laser scanner systems and they can be
used to improve the quality of the surveys using terrestrial laser scanners.


Resolução de sistemas de varredura laser; Laser terrestre; Resolution of terrestrial laser scanners; Terrestrial Laser scanner