Comparison of Conventional and “Satlevel” Collocation Model for Production of Contour Map of Yanbu Industrial City
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 6
Abstract
Contour map is very useful as its portrays the three dimensional (3D) configuration of the area under study. Data acquisition by conventional method of production of such maps has been very tedious. There is need for simple and quick method of production like the use of "Satlevel" Collocation. This is a new method of geoid determination in which the ellipsoidal height is combined with orthometric height to model the geoid. Geoid determinations using integration of geodetic levelling and Global Navigation Satellite System (GNSS), which enables the geoid to be determined in patches, are taking over from the empirical geoid determination. Geoid so determined can be applied with ellipsoidal height to get orthometric height which height users always prefer. This can then be used for production of contour map. In this work, Conventional method was use to acquire data for orthometric height. Also, “Satlevel" Collocation model was used to generate orthometric heights in Yanbu Industrial city. The two data were used to produce the contour map of the study area using AutoCAD Civil 3D software. “Satlevel" Collocation model enables production of contour map without going through all the processes of data acquisition by levelling. The two results were compared and show that there is no significant difference between the new map and the other from the acquired data. This method can be extended to other parts of Saudi Arabia.
Authors and Affiliations
K. Aleem
Keywords
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