A measuring system, comprising a remotely controllable flying vehicle system with a GPS device and a measuring device installed thereon, a position measuring device installed at an arbitrary position and able to measure distance and angle and to track, a ground base station electrically connected to said position measuring device via wired or wireless means, a remote controller able to give and take data to and from said ground base station and able to perform wireless communication to and from said flying vehicle system, and a control unit provided on said flying vehicle system, wherein said ground base station has a control processing unit and a base communication unit, and wherein said base communication unit is capable of communicating with said position measuring device and said remote controller, wherein said flying vehicle system has a retro-reflector as an object to be measured and said position measuring device is constructed so as to track said retro-reflector and perform distance measurement and angle measurement, to determine position coordinates, TS coordinates, comprising measurements of slope distance, vertical angle and horizontal angle, wherein said flying vehicle system obtains GPS coordinates, positional coordinates, by said GPS device at least at two points (P1,P2) during flight, and said positional coordinates are transmitted to said ground base station via said remote controller, and said position measuring device measures positions of said two points of said flying vehicle system from an installation point, and the corresponding TS coordinates of the two points are transmitted to said ground base station, wherein said ground base station is configured to determine the GPS coordinates of the installation point of said position measuring device based on said positional coordinates of said two points and based on said TS coordinates of the two points, and wherein said control unit or said ground base station is adapted to convert position coordinates of said flying vehicle system measured by said position measuring device to GPS coordinates based on the GPS coordinates of said installation point, and said control unit is adapted to control the flight of said flying vehicle system based on the converted GPS coordinates or on said positional coordinates obtained by said GPS device. wherein said ground base station has a control processing unit and a base communication unit, and wherein said base communication unit is capable of communicating with said position measuring device and said remote controller, wherein said flying vehicle system has a retro-reflector as an object to be measured and said position measuring device is constructed so as to track said retro-reflector and perform distance measurement and angle measurement, to determine position coordinates, TS coordinates, comprising measurements of slope distance, vertical angle and horizontal angle, wherein said flying vehicle system obtains GPS coordinates, positional coordinates, by said GPS device at least at two points (P1,P2) during flight, and said positional coordinates are transmitted to said ground base station via said remote controller, and said position measuring device measures positions of said two points of said flying vehicle system from an installation point, and the corresponding TS coordinates of the two points are transmitted to said ground base station, wherein said ground base station is configured to determine the GPS coordinates of the installation point of said position measuring device based on said positional coordinates of said two points and based on said TS coordinates of the two points, and wherein said control unit or said ground base station is adapted to convert position coordinates of said flying vehicle system measured by said position measuring device to GPS coordinates based on the GPS coordinates of said installation point, and said control unit is adapted to control the flight of said flying vehicle system based on the converted GPS coordinates or on said positional coordinates obtained by said GPS device.