The invention provides 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 for controlling a flight of a flying vehicle, a remote controller able to give and take data to and from the ground base station and able to perform wireless communication to and from the flying vehicle system, and a control unit provided on the flying vehicle system or the ground base station, wherein the flying vehicle system has a retro-reflector as an object to be measured and the position measuring device is constructed so as to track the retro-reflector and perform distance measurement and angle measurement, wherein the flying vehicle system obtains GPS coordinates by the GPS device at least at two points during flight, the position measuring device measures positions of the two points of the flying vehicle system from an installation point, wherein the position measuring device measures positions of the flying vehicle system at the two points from the installation points, and either one of the control units are configured so as to obtain an absolute coordinate or GPS coordinate of the installation point of the position measuring device based on the GPS coordinates of the two points and based on distance measurement results and on angle measurement results by the position measuring device.