Alternatives for economic boundary determination in the establishment of a cadastral system
Konecny, Gottfried
Efficient cadastral and land information systems are a prerequisite for security and protection of land transactions. However, they only exist in about half the countries of the world. Where they do not exist land is dead capital. This has two aspects, first, the legal issue to regulate land registration and subsequent transactions based on uniquely defined land objects. Second, the creation of the geometry of the land objects, which is the topic of the paper. The establishment of such systems can be expensive and slow, unless new technological advances are being made use of. These are: GPS-GNSS used in reference networks as the most accurate, but most costly and time consuming option. Another efficient possibility is to use aerial ortho-mapping to produce preliminary parcel boundaries from image interpretation during adjudication procedures. While this method has deficiencies in accuracy of boundaries, it does not prevent the legal aspects to be completed quickly. But it offers the possibility to conduct accurate GPS-GNSS surveys only in those transactions, where accuracy is demanded. With the proper design of the geodatabase, permitting to preserve the topology of the parcel fabric, but to change boundary point coordinates, when higher accuracy surveys are demanded, it is possible to speed up the registration process. It is even possible in extreme circumstances to utilize high resolution satellite imagery for this purpose, rather than the mor accurate and reliable aerial images. In this manner it should be possible for the countries not yet benefiting from an efficient and reliable land registration to complete the system in less time than one generation for the benefit of the economy of these countries.
Event: FIG Working Week 2012 : Territory, environment, and cultural heritage
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