Cadastral Coordinates: A Case Study

UNSW School of Surveying and Geospatial Engineering


Traditionally cadastral boundaries have been recorded and archived on paper plans. When cadastral boundaries change over time new plans of survey are created. These new plans ideally would combine with older plans to create a seamless cadastral framework. However there are many factors which result in inconsistencies occurring in the framework. The inconsistencies need to be resolved otherwise the cadastre will become disjointed and unreliable.

Using a system of cadastral coordinates where each corner of a parcel is given a coordinate it is possible to use the boundary dimensions as observations in adjustment software. This will create a best fit of parcel corner coordinates from the old and new cadastral plans. This process still requires traditional surveying knowledge about cadastre evolution and cadastral principles so that the original intentions of the cadastre are maintained.

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