DBPapers
DOI: 10.5593/sgem2011/s07.101

A COMPARISON WITH ORTHOMETRIC HEIGHTS OBTAINED BY REAL TIME KINEMATIC AND BY LOCAL GEOID MODEL, CASE STUDY IN ADANA

AUTHOR/S: I. SANLIOGLU, S. SIRRI MARAS
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 2, 199-206 pp

ABSTRACT

The aim to the research was to compare orthometric heights, determined by real-time kinematic (RTK) Global Positioning System observations and local geoid models in Adana city, Turkey. GPS network had been established according to Large Scale Map
and Map Information Production Regulations (LSM&MIPR) in Adana metropolitan city at 2008. In study field total area is 663.05 km2 451 stations which are 2 items Turkish National Fundamental GPS Network (TUTGA) points, 6 stations graded by C1, 35
stations graded by C2 and 410 stations graded by C3 appropriately to BSH&MIPR. Geometric leveling had been carried out to determine orthometric heights of unknown heights of stations using by digital levels.

Adana geoid model had been determined using second order-nine parameter multiquadratic surface fitting benefiting 409 control points. Root mean square of model is ± 2.3 cm. Geoid undulations of 30’’x30’’ spacing grid points were computed from Adana
geoid parameters to use in regional geoid model file (rgm format) for Topcon RTK GPS receivers. The orthometric heights obtained by Topcon receivers have been compared with original heights in the chosen test area.

Keywords: GPS, RTK, geoid determination, surface fitting

PAPER 2011/s07.101: A COMPARISON WITH ORTHOMETRIC HEIGHTS OBTAINED BY REAL TIME KINEMATIC AND BY LOCAL GEOID MODEL, CASE STUDY IN ADANA

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