Agricultura no. 3 –4 (111-112)/2019 Agriculture - 374 - STUDYING THE PRECISION OF THE TOPOGRAPHIC PLAN USING THE CLASSICAL TECHNOLOGIES AND THE U.A.V. POP Sergiu 1)* , Elemer ȘUBA 2) , Nicolae POP 2) 1) Tehnical University of Cluj Napoca, Faculty of Civil Engineering, C-tin Daicoviciu no. 15, Cluj, Romania 2) University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Horticulture, 3-5 Mănăștur St., Cluj, Romania *Corespondent author: popsergiu36@gmail.com Abstract: The paper presented in the study presents an analysis of the planning and altimetry of the specifications made by the classical technology and U.A.V. technology, technologies used in the elaboration of the topography of the plan in the I.C.H.A.T., USA.M.V Cluj-Napoca. To achieve the topographic plan, from a classic point of view, the coordinates of the points determined by the GNSS technology have been started. From point P a closed loop polygon path with In Po orientation was made. The azimuth, zenithal and distance observations were made with the Laica TCR 805 total station, making orientated azimuth observations. As a result of the polygonal route, there was obtained a non-closing on the guidelines and coordinates that fall within the tolerable tolerances. From the points of the polygon route, the elevations of the planimetric and altimetric details required for the topographical plan of the I.C.H.A.T. Elaboration of the topographic plan of the study area was carried out by UAV technology, using a Phantom 4 pro DJI multicopter dione machine with a FC6310 (8.8 mm) type device. The digital model of the land through the classical technology was made using the TopoLT software, and in the UAV technology the DRONE DEPLOY program was used. Better fidelity in using UAV technology and better precision in classical technology is more noticeable when plotting land with a greater slope. Keywords: Classical technology, GNSS technology, UAV technology, planimetric elevations, altimeter elevations INTRODUCTION The study is intended to carry out the topographic plan of the area I.C.H.A.T. of the U.S.A.M.V Cluj-Napoca for analyzing the precision obtained in the classic case and using the U.A.V. In this sense, a closed circuit scan combined with the deletion was used to pick up the details. The coordinates of the starting points were determined using a GPS receiver at different measurement times. From the photogrammetric point of view, the plan of the analyzed area was realized using a drone and the specific processing programs. The hikes, also called polygons, have the role of thickening the points in the support network, to allow the topographic details to be lifted. Planimetric trips can be supported and closed circuit trips. Closed circuit travel runs along a polygonal line, starting from a known coordinate point, with a visa to another known coordinate point in the national geodesic system, stationing at the polygon peaks and measuring in the