| 摘要 |
PURPOSE:To obtain highly accurate data based on mutual information between a moving body and an opponent moving body by transmitting information obtained from processing of the frequency of a Doppler deviation signal from mutual transmission and reception of radiowave therebetween and own transmission signals. CONSTITUTION:Doppler deviation detectors A and B are carried on two moving bodies. The detector A transmits a signal of frequency f1 with a transmitter 1a while the detector B transmits a signal of frequency f2 with a transmitter 1b. Receivers 2a and 2b receive signals from each other. The frequency of the signals received is measured separatley with devices 3a and 3b. Frequency information as difference between these frequencies and the frequency of own transmission signals is calculated with computing units 6a and 6b and this information is transmitted to each others. At the same time, a Doppler deviation value is calculated based on the frequency information and the frequency information sent from the opponent moving objects likewise. This enables the cancelling of frequency deviations between the detectors A and B thereby providing a highly accurate data. |
