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Ghana national grid mapping system8/3/2023 Keywords: Coordinate Systems, ellipsoidal heights, Global positioning System, WGS84, Transformation parameters INTRODUCTION The concepts of coordinate systems are required in order to identify points in space and to represent them on maps. Position recognition is done by using a mathematical method of assigning numbers, called coordinates to each point in space. There are different coordinate systems the commonest being the system of latitudes, longitudes and ellipsoidal heights. 116 Journal of Science and Technology, Vol. 1, April 8Ģ René Descartes ( ) introduced a system of coordinates based on orthogonal axes often referred to as a Cartesian system. This system charts a point based upon its location along intersecting axes, denoted as X, Y and Z axes.
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