The flight control part 201 makes the unmanned aerial vehicle fly along a flight path in a predetermined area. The radio wave acquisition part 202 acquires radio wave information including a radio wave intensity when the radio unit of the unmanned aerial vehicle detects a short-distance radio wave of the user terminal during the flight of the unmanned aerial vehicle. The flight position acquisition part 203 acquires GPS position information of the unmanned aerial vehicle when the radio unit detected the short-distance radio wave, as a flight position of the unmanned aerial vehicle based on a GPS unit of the unmanned aerial vehicle. The terminal position calculation part 204 calculates a presence position of the user terminal in the area based on a radio wave intensity of the acquired radio wave information, and the acquired flight position of the unmanned aerial vehicle. The user attribute analysis part 205 arranges the calculated presence position of the user terminal in the map information corresponding to the area, and analyzes user attribute information of the user terminal based on place attribute information indicating a characteristic of the place where the presence position is arranged.