Abstract:
Due to the fast growth of construction technologies and increasing demands on the efficient use of land, human living space are expanded from on the surface to above and under the surface. This has raised the importance of improvement of the cadastral system.
This study proposed a new technique to enhance the horizontal positional accuracy of boundaries of residential parcels and create a digital spatial database including the georeferenced cadastral map to a global coordinate system to save the coordinates of each parcel corner as a soft copy which can be used for the re-demarcation of any corner by GPS in the case of removal or displacement of ground marks. The spatial database attributes can be used to manage be the whole cadastral process digitally.
The cadastral maps has been exported to ArcGIS 10.0 environment, the coordinates (E, N) of corner’s parcels had been collected using GPS instrument, calculated from digital cadastral map and transform the block map. The horizontal positional accuracy of block 78 parcel’s corners had been achieved to ±0.033 meters.
