Engineering World
Print ISSN: , E-ISSN: 2692-5079 An Open Access, Peer Reviewed Journal of Selected Publications in Engineering and Applied Sciences
Volume 5, 2023
Testing the PDEM to Control the Precision of an IFSAR DEM
Authors: Jose F. Zelasco, Kevin Ennis, Barbara Sulpis, Jose Luis Fernández Ausinaga
Abstract: The Perpendicular Distance Estimation Method (PDEM), a method to estimate the precision of a Digital
Elevation Model (DEM), in “Effectiveness of Geometric Quality Control Using a Distance Evaluation Method”
was tested assuming independent normal random for the vertical and horizontal error, considering isotropic this
horizontal error. Here the PDEM is tested in the case of a DEM obtained by IFSAR technology, also, assuming
independent normal random errors, but this time in three independent directions. Because vertical direction is
correlated with one horizontal direction, -the range axis direction-, a rotation has to be done and so, three
independent directions are obtained.
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Keywords: GIS geometric accuracy assessment, IFSAR DEM geometric accuracy, Perpendicular Distance
Evaluation Method (PDEM), IFSAR DEM quality evaluation
Pages: 187-193
DOI: 10.37394/232025.2023.5.21
Engineering World, ISSN / E-ISSN: / 2692-5079, Volume 5, 2023, Art. #21