POSIBILITIES OF REALISATION OF THE MINOR CONTROL NETWORK WITH GNSS TEHNOLOGY IN THE OCCUPYED AREAS WITH FOREST VEGETATION IN MOUNTAIN AREAS PUBLISHEDGheorghe CRAINIC, Vasilica Laura DAMIAN, Mihaela SPILCA
Posibilities of realisation of the minor control network with GNSS tehnology in the occupyed areas with forest vegetation in mountain areas is characterized by a number of issues, due to the same technologies as the configuration of land and work. Lack of mutual visibility between control points or loss related signals geodetic points placed in areas with forest vegetation cover in mountain areas, make it impossible or significantly reduce the possibility of realisation the minor control point, using conventional technology for this purpose only. For minor control networks realisation of the mountain forest sector can use GNSS technology to register their observations using the geodetic receivers with single or dual frequency (L1, L1L2), and for processing, specialized computer systems, which allow you to obtain final coordinate in the national reference system and a report complex data processing. In relation to existing facilities can apply various methods of registering data, adapted working conditions of the particular mountain area. Working method for achieving network dedicated with GNSS technology is relatively static and can be done and fast static version, if vector length does not exceed 4-5 km. To obtain the final coordinates in the national reference system transformation parameters are required. Usually these are used to obtain common geodetic points (points known in both coordinate reference systems) found in the work area to obtain results with high precision. In the mountains geodesic points are located at a density appropriate, taking account of the geometric triangulation related networks, is relatively well preserved, presenting normal the technical conditions. Determination of transformation parameters is usually done using traditional static positioning method and positioning points of the minor control network is done by fast static method. Considering the practical needs that commercial forestry in the mountain area of forest management activities, is essential for complex Topo-Cadastral works, which is based on the existence of a complex minor cotrol network of the details. To streamline these activities in the sector terrestrial measurements, is it necessary to implement modern technologies for collecting and processing data and that proper management of various final products obtained.
forestry vegetation, mountain area, GNSS technology, calculation system, coordinate transformation, geodetic points, dense network, detail point