Coordinate Transformation Using Matlab

Topics: Geodesy, Latitude, Map projection Pages: 18 (4286 words) Published: December 18, 2011


1.1 Background of Study

Coordinate systems form a common frame of reference for description of positions and on the other hand, coordinates are simply an ordered set of numbers that are used to describe the positions or features in coordinate system. Transformation parameters are required to move from one system to another. Also, new technologies like global positioning system have provide new methods of coordinates determination the map production, update and revision are based on geographical coordinates, map-grid coordinates or coordinates in an arbitrary system. Some other based on old (local) system. With so many geodetic datums in current use, it is becoming almost common practice to transform coordinates from one datum to another. For an example, a surveyor, using GPS, will obtain the WGS 84 geocentric, geodetic or Cartesian coordinates of the survey point. In order to plot the position on the corresponding local map, these WGS 84 coordinates must be first transformed into the local datum on which the map is based, which in Malaysia would most probably be Malayan Revised Triangulation 1948 (MRT 48) for Peninsular Malaysia and Borneo Triangulation 1968 (BT68) for East Malaysia. Therefore, coordinates transformation play many important roles in land survey development for coordinates transformation, datum conversion and map projection. Thus, development and manipulation in coordinate transformation system software currently become more exclusive together with the growing technology in Malaysia.

1.2 Problem Statement

As already known, there is few coordinates system in Malaysia and most off situation for a surveyor required doing a coordinate transformation from one datum to another datum. However, datum conversion and transformation can be accomplished by many methods. Hence, a computer programming becomes a useful tool to solve our problems using manual computation for a coordinate transformation is totally not an easy task and very challenging. Coordinate transformation software can make it easier and faster. Thus, in this project has to develop software based on coordinate transformation using Mathworks Matlab 7.1 software.

1.3 Objective of Study

The aim of this study is to develop software for generating coordinates from one system to another. There are some objectives of study this study: (i) To study formulas for coordinate transformation in Malaysia from satellite datum vice verse local geodetic datum. (ii) To develop software for generating coordinates transformations using Mathworks Matlab 7.1 software.

1.4 Scope of study

However, this study is limited as follows:
(i) Understanding of formula coordinate transformation system such as World Geodetic System 1984 (WGS84), Malayan Revised Triangulation 1948 (MRT48), Borneo Triangulation 1968 (BT68), Rectified Skew Orthomorphic (RSO), Cassini Soldner System, and the geocentric system, Geocentric Datum of Malaysia 2000 (GDM200). (ii) Learning of Mathworks Matlab 7.1 to develop coordinate transformation software. (iii) Verify the computation transformation, and compare the computation result with Geodetic Datum Transformation System (GDTS) software.

1.5 Significance of Study

The following are potential benefits that can be expected from this study: (i) To introduce coordinate transformation software that cover Malaysia. Furthermore, to introduce software where served one module that transformation parameter can be modified by user. (ii) To find all information about coordinate transformation parameter, calculation algorithm, formulas, definition and concept.

1.6 Research Methodology

This research is studies that need to perform by four stages and finalize it in given time. The stage is briefly explained by the flow chart of Figure 1.1.

Figure 1.1 Flow chart of Research Methodology.

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