Iz znanosti in stroke geodetsko podprta prenova grafi nega dela zemlji kega katastra : The renovation of the land cadastre’s graphical part based on surveying principles

Polo ajna natan nost zemlji kokatastrskega prikaza (ZKP) kot enega od temeljnih elementov kakovosti zbirk prostorskih podatkov je v Republiki Sloveniji pere a tema. Ob pritisku institucionalnih in drugih uporabnikov se je Geodetska uprava Republike Slovenije odlo ila za uvajanje izbolj av. Na Oddelku za geodezijo Fakultete za gradbeni tvo in geodezijo Univerze v Ljubljani smo ob tej pobudi ustanovili skupino, ki je za ela natan neje presku ati tako imenovano membransko metodo. Najprej smo za eli razvijati programski modul za metodo kon nih elementov in geodetske izravnave, zatem pa smo za namen testiranja uporabili tr no razli ico nem kega proizvajalca. Z uporabo membranske metode in vklju itvijo domeritev je mogo e u inkovito izbolj ati homogenost polo ajne natan nosti ZKP, e se pri tem nedvoumno uporabljajo osnovna na ela geodetske stroke (metode koordinatne geometrije, topologija, izravnava, zakon o prenosu pogre kov itd.). Prispevek je namenjen bolj prikazu obstoje ih in mogo ih metod izbolj ave polo ajne natan nosti ZKP kot pa predstavitvi rezultatov na ih prvih raziskav ; The positional accuracy of the land cadastral index map (a graphical presentation termed ‘ZKP’), as one of the basic elements of spatial database quality, is a topic of on-going interest in the Republic of Slovenia. Mainly due to the pressures of institutional and other users of these data, the Surveying and Mapping Authority of the Republic of Slovenia has decided to implement improvements. At the Department of Geodesy, Faculty of Civil and Geodetic Engineering, University of Ljubljana, a working group was established in order to analyse and test in particular the so-called membrane method for this purpose. At the beginning, we started to develop our own program for the finite element method of geodetic adjustments, and then we continued to test the commercial solution of German provider. The membrane method, together with additional measurements, provides the possibility for an effective improvement of the heterogeneity of land cadastral graphical presentation (ZKP), where the basic principles of geodesy must be strongly respected (methods of the coordinate geometry, topology, adjustments, error propagation law, etc.). This article is meant to introduce existing and possible solutions for the improvements of the positional accuracy of the ZKP and not to present the results of our first research.