Scholarly record
PRELIMINARY RESULTS OF CONNECTION BETWEEN TWO STATE LEVELING NETWORKS VIA CROSS-BORDER LEVELLING MEASUREMENTS
Abstract
Three cross-border levelling lines between state levelling networks of Republic of Bulgaria and Republic of North Macedonia are made. The purpose of the realization of these lines is connecting of the state levelling network of Republic of North Macedonia in European Vertical Reference System. That could be made directly through the Bulgarian state levelling network ? part of UELN95/98 from 2003. Precise levelling measurements are initialized from the state geodetic agencies - Agency for Real Estate Cadastre of the Republic of North Macedonia (Former Yugoslav Republic of Macedonia - FYROM) and Agency for Geodesy Cartography and Cadastre of the Republic of Bulgaria. Implemented cross-border levelling lines connect first order levelling lines of the two state levelling networks. As a result are formed two closed levelling polygons. Estimation of connection of the both height systems is made from calculated misclosures. The result of estimation of the realized connection between state levelling networks is valid for the cross border region. The same estimation of connection is made with the height and geopotential data of fundamental nodal benchmarks in the two countries. The achieved results could be successfully used for realization of state levelling network of Macedonia in EVRS.
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References7
Geodesy, Cartography and Cadastre Agency (GCCA), Project: Connection of the State Levelling Network of the Republic of Bulgaria with Unified European Levelling Network (UELN), 2004
Iinstruction for Levelling I and II order, Head Office of Geodesy, Cartography and Cadastre, Committee on Architecture and Urban Development, 1980
Ordinance № RD-02-21-1/09 July 2015 for State Levelling Network, Ministry of Regional Development and Public Works, 2015
Peneva E., Heights and vertical systems, Military-Geographic Service, Sofia, ISBN 978-954-91225-0-3, 173 p., 2017 (In Bulgarian)
Sacher M., Belyashki T.,Liebsch G., Ihde J., Status of the UELN/EVRS Data base and Results of the last UELN adjustment, IAG Subcommission for Europe (EUREF), Bratislava, June, 2-5, EUREF publicationNo 14, Mitteilungen des Bundesamtes für Kartographie und Geodäsie, Band 35, S.172-179 Frankfurt am Main, 2004
Srbinoski Z., Bogdanivski Z., Tundzev B., Dimesky S., Kasapovski F., New Basic Levelling Network of the Republic of Macedonia, Annual of the University of Rachitecture, civil Engineering and Geodesy, Vol. 50, Issue 1, pp 1-11, 2017
http://www.crs-geo.eu/
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