A radio wave measurement system includes: an aerial moving body to move or to hover above a measurement target antenna for radiating a radio wave in a sky direction; and a position measurer to measure a time added position of the aerial moving body. The aerial moving body includes a measurement antenna to receive the radio wave and a radio wave measurer to measure time-added received radio wave data. The aerial moving body further includes a beam shape data generator to generate radiated radio wave data including the received radio wave data and the radio wave source relative position data representing measurement point data that is a position of the aerial moving body at a point of time when the received radio wave data is measured as a relative position with respect to the measurement target antenna.