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|Title||STUDYING THE EFFECT OF DISTORTION IN BASIC MAP ELEMENTS FOR THE DEGREE OF SPATIAL ACCURACY OF GAZA STRIP MAPS|
|Title in Arabic||STUDYING THE EFFECT OF DISTORTION IN BASIC MAP ELEMENTS FOR THE DEGREE OF SPATIAL ACCURACY OF GAZA STRIP MAPS|
The used coordinate system in Palestine was established by the British Military Survey in 1923. This system is based on "Palestine 1923" datum that corresponds to "Clarke 1880" spheroid and a transverse cylindrical projection called "Cassini". All maps in Palestine are produced and analyzed according to this coordinate system. With the wide range use of the GPS technology in Palestine as well as the large development in Geographic Information System applications, maps may be produced with different coordinate systems. This matter becomes more complicated since maps are produced by external agencies like Israeli companies or donors, etc. This leads to cause a spatial change while comparing or combining maps from different sources. Thus, it is necessary to study the reliability degree of maps from different sources to verify the effect of change in a map coordinate system to its spatial accuracy. This research aims to investigate the degree of spatial change occurred in map features due to a change in some basic map elements, such as map datum and/or projection in addition to a change in map scale and map included area, while combining data from different sources. Three case studies are performed to analyze the planimetric accuracy of various maps in Palestine, and mainly in the Gaza Strip. The maps include Rafah City, Gaza City and a map showing the border of the Gaza Strip itself. Selection is chosen on the basis of different constituting area, different projection and/or datum, and different scale.
|Published in||The 4th International Engineering Conference –Towards engineering of 21st century|
|Publisher||Islamic University - Faculty of Engineering|
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