WE CLAIM:
1. A radio wave measurement system comprising:
an aerial moving body to move or to hover above a measurement target antenna for radiating a radio wave in a sky direction;
a position measurer to measure a position of the aerial moving body;
a measurement antenna mounted on the aerial moving body and to receive the radio wave;
a radio wave measurer mounted on the aerial moving body and to measure received radio wave data including at least one of an amplitude and a phase of the radio wave received by the measurement antenna; and
a radiated radio wave data generator to generate radiated radio wave data including the received radio wave data and radio wave source relative position data representing measurement point data as a position relative to the measurement target antenna, the measurement point data being data of a position of the aerial moving body at a point of time when the received radio wave data is measured.
2. The radio wave measurement system according to claim 1, further comprising a direction signal transmission reception system to transmit and receive a direction signal emitted by the aerial moving body to indicate an existence direction being a direction in which the aerial moving body exists when viewed from the measurement target antenna.
3. The radio wave measurement system according to claim 2, further comprising a measurement system control device installed on a ground and including the radiated radio wave data generator,
wherein the direction signal transmission reception system transmits the received radio wave data from the aerial moving body to the measurement system control device.

4. The radio wave measurement system according to claim 3, wherein one of a mobile communication system for controlling the aerial moving body and the direction signal transmission reception system is selected to send the received radio wave data from the aerial moving body to the measurement system control device.
5. The radio wave measurement system according to claim 3, further comprising a measurement communication system that is a communication system different from a mobile communication system for controlling the aerial moving body,
wherein one of the direction signal transmission reception system and the measurement communication system is selected to send the received radio wave data from the aerial moving body to the measurement system control device.
6. The radio wave measurement system according to claim 1 or 2, further
comprising:
a measurement system control device installed on a ground and including the radiated radio wave data generator; and
a measurement communication system that is a communication system different from a mobile communication system for controlling the aerial moving body,
wherein the measurement communication system sends the received radio wave data from the aerial moving body to the measurement system control device.
7. The radio wave measurement system according to claim 3, further
comprising a measurement communication system that is a communication system
different from a mobile communication system for controlling the aerial moving body,
wherein one of the direction signal transmission reception system, the mobile communication system, and the measurement communication system is selected to send the received radio wave data from the aerial moving body to the measurement system control device.

8. The radio wave measurement system according to any one of claims 1 to 7, wherein a signal controlling the radio wave measurer is sent by the radio wave radiated by the measurement target antenna.
9. The radio wave measurement system according to claim 1, further comprising a measurement system control device installed on a ground and including the radiated radio wave data generator,
wherein a mobile communication system for controlling the aerial moving body sends the received radio wave data from the aerial moving body to the measurement system control device.
10. The radio wave measurement system according to any one of claims 1 to
9, further comprising a power reception antenna mounted on the aerial moving body
and to receive the radio wave,
wherein
the measurement target antenna is a power transmission antenna to transmit power by the radiated radio wave, and
at least one of the aerial moving body and the radio wave measurer utilizes the power obtained from the radio wave received by the power reception antenna.
11. The radio wave measurement system according to any one of claims 1 to
10, further comprising a storage device mounted on the aerial moving body and to store
radio wave measurement data in which the measurement point data or the radio wave
source relative position data is correlated with the received radio wave data.
12. The radio wave measurement system according to any one of claims 1 to
11, wherein the position measurer is mounted on the aerial moving body.

13. The radio wave measurement system according to any one of claims 1 to 11, wherein the position measurer is installed on the ground.
14. A wireless power transmission device comprising:
a power transmission antenna to transmit power with a radiating radio wave and being capable of changing an orientation direction;
a radiation direction determiner to determine a radiation direction, the radiation direction being a direction in which an aerial moving body exists, the aerial moving body being a target to transmit the power;
an orientation direction changer to direct the orientation direction of the power transmission antenna toward the radiation direction; and
a transmission signal generator to generate a transmission signal transmitted as the radio wave from the power transmission antenna.
15. The wireless power transmission device according to claim 14, wherein
the power transmission antenna is a phased array antenna including a plurality
of element antennas, and
the orientation direction changer controls a phase of the radio wave radiated by each element antenna.
16. The wireless power transmission device according to claim 15, wherein
the plurality of element antennas are divided into a plurality of groups, and
the orientation direction changer changes the radiation direction of the radio
wave radiated by the element antenna included in each group uniformly.
17. The wireless power transmission device according to any one of claims 14
to 16, further comprising a pilot reception antenna to receive a pilot signal transmitted
by the aerial moving body,
wherein the radiation direction determiner determines a direction in which the

pilot signal arrives from the pilot signal received by the pilot reception antenna as the radiation direction.
18. The wireless power transmission device according to any one of claims 14
to 16, further comprising a position measurer to measure a mobile position that is a
position of the aerial moving body,
wherein the radiation direction determiner determines a direction directed toward the mobile position as the radiation direction.
19. The wireless power transmission device according to any one of claims 14 to 18, wherein the position measurer is mounted on the aerial moving body.
20. The wireless power transmission device according to any one of claims 14 to 18, wherein the position measurer is installed on a ground.