摘要 |
PROBLEM TO BE SOLVED: To collect more information about a radio signal.SOLUTION: From a plurality of sensors, pieces of waveform data of radio signals received in the respective sensors are acquired, and on the basis of correlation between one piece of waveform data as the piece of waveform data of a radio signal received in one sensor and another piece of waveform data as the piece of waveform data of a radio signal received in another sensor, information of the radio signal is extracted from the one piece of waveform data. |