Application of remote methods with unmanned aerial systems for the production of cadastral maps and cadastral registers on the territory of the Republic of Bulgaria

cadastre unmanned aerial systems geodetic measurements accuracy photogrammetry With the advancement of technologies, their mass application began, which can easily gather information about the characteristics of spatial objects from a given territory. Unmanned aerial systems (UAS) are widely used in geodesy, GIS (mapping), security, aerial photography and video capturing, science and research, and others. Like any of the other geodetic technologies, aerial photogrammetric imaging through UAS cannot achieve 100% applicability in the rich variety of reality to be mapped. This does not mean that this technology cannot be applied to the needs of geodesy and cadastre along with traditional geodetic techniques for collecting spatial data, but that it is necessary to seek their combination for optimal and effective achievement of the set goals and objectives. In order to increase the degree of applicability of aerial photogrammetry with UAS, in particular for the needs of the cadastre, the characteristics of the technical means used for aerial photography, the preparation of specialists to reduce the subjective factor in mapping and the conditions preventing visibility to the objects of the cadastre influence the process. [9] In recent years, various publications have presented results from the application of remote methods with unmanned aerial vehicles to produce a cadastral map and cadastral registers.