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Acta Geodynamica et Geomaterialia

 
Title: COMPARISON OF SELECTED DATA ACQUISITION METHODS FOR GNSS TERRAIN OBSTACLES MODELING
 
Authors: Pelc-Mieczkowska Renata, Janicka Joanna, Bednarczyk Michał and Tomaszewski Dariusz
 
DOI: 10.13168/AGG.2015.0029
 
Journal: Acta Geodynamica et Geomaterialia, Vol. 12, No. 3 (179), Prague 2015
 
Full Text: PDF file (1.6 MB)
 
Keywords: GNSS, obstacles modeling, hemispherical photography, fish-eye lens, terrestrial laser scanning
 
Abstract: For satellite measurements, both in navigation and surveying, unobstructed visibility of at least three (2D positioning), four (3D positioning) or five (RTK) satellites is essential. In urban areas or in the vicinity of trees knowledge of shape and location of the terrain obstacles may determine the success of GNSS positioning. The aim of the presented research is to investigate the suitability of the use of laser scanning and digital hemispherical photography for modeling terrain obstacles over the GNSS measurement points. The accuracy of data acquisition methods was examined by taking the coordinates from tacheometric measurement as the reference.