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Proposed single-zone map projection system for Turkey Cover

Proposed single-zone map projection system for Turkey

By: Faruk Yildirim and  Fatih Kadi  
Open Access
|Jan 2022

Abstract

The coordinate base of the maps or sheets produced is the Universal Transversal Mercator (UTM) conformal projection, and it is not possible to work in a single coordinate system in Turkey. Therefore, a transition from UTM to other conformal projections is required. For the countries extending in an east–west UTM zone width like Turkey, composite projection (CP), a double standard paralleling Lambert Conformal Conic (LCC) and double map projections (DP) are used widely. However, this process causes increase in working load and processing errors by users. This study aims to determine a common projection system that can be used in the whole country. In this context, a composite projection from UTM and LCC projection has been defined for the first time. According to the results obtained, map projection CP with the least distortion values in both east–west and north–south directions has been chosen. With the CP selection, a single coordinate system has been determined for medium- and large-scale maps. Projection correction formulas, scale factor and false origin have been determined for map coordinates in CP. These distortions are obtained with a difference of less than 1 cm for 1 km long sides and less than 0.003″ for the azimuth value of this side, when the correction formulas are used.

DOI: https://doi.org/10.2478/rgg-2021-0006 | Journal eISSN: 2391-8152 | Journal ISSN: 0867-3179
Language: English
Page range: 35 - 45
Submitted on: Aug 12, 2021
Accepted on: Nov 29, 2021
Published on: Jan 3, 2022
Published by: Warsaw University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2022 Faruk Yildirim, Fatih Kadi, published by Warsaw University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.