Besha, TuluFirdisa, Diriba2018-07-112023-11-282018-07-112023-11-282013-06http://etd.aau.edu.et/handle/12345678/7756This study used satellite Global Positioning System and optical ground-based total station positioning system in an integrated approach to determine a modern geodetic measurement based 2D and 3D cadastral system for Addis Ababa University Science Faculty usually called Arat kilo campus. This provides a parcel-based land and cadastral property spatial and non-spatial registration with a tie to an absolute and global geodetic positioning reference system. Previously, cadastral land property registration was determined traditionally on a paper map using simple architectural drawing that describes the relative location of a particular land parcel and properties on it with respect to a well known locality names (e.g., street name, building name, etc) – the old cadastral system has no spatial component. Now, with the advent of GPS positioning system and optical total station this conventional cadastral system which has been based on non-spatial parcel based registration becomes obsolesce. The modern cadastral registration system has to tie the non-spatial administrative cadastral component to its corresponding spatial component. The new approach uses GPS receiver and optical total station to map the 2D and 3D representations of the cadastral properties. GAMIT/GLOBK was used to eliminate the errors from GPS observations to establish first order cadastral surveying fundamental control points accurate to centimeter level. This provides a unique opportunity to establish a well distributed high accuracy (~ 5cm) second order cadastral surveying control benchmarks using optical total station measurements with a tie to the first order GPS-based survey control points so as to carry out high resolution 2D and 3D cadastral mapping. The combined GPS and Total station surveying techniques have registered the 2D and 3D spatial information of about five cadastral properties occupying an area of 34376 square meters. 26% of the 2D cadastral registration corresponds to buildings, while 1%, 1%, 2%, 1% corresponds to Green area, playground, walkway and asphalt road respectively.enGreen areaPlaygroundWalkway and asphalt road respectivelyThesis