| 摘要 |
PURPOSE:To prevent a disturbing radio wave from being given to other peripheral station by using a code decoding section to decode a specific signal included in a signal sent from a MODEM to a transmitter via a variable delay section thereby controlling the transmitter. CONSTITUTION:A peripheral station 2 uses an RF receiver 9 to receive and demodulate its surrounding station radio wave 7 and a reference station radio 6 from a peripheral station reception antenna 5. Moreover, a time difference between a 2nd specific signal included in the demodulation signal of the reference station radio wave 6 and the 1st specific signal included in the demodulation signal of the radio wave 7 as a reference signal is compared, a measured phase difference is equivalently measured and the result is corrected by a variable delay section 8 to synchronize the phase of the transmission signal of its own peripheral station. At that time, since the frequency of the received radio wave is identical, it is required to receive the reference station radio wave 6 while its own peripheral station radio wave 7 is stopped tentatively. The transmitter 3 is controlled by using a transmitter control signal 17 based on the 1st specific signal decoded by a code decoding section 11 connecting to the output of the variable delay section 8 at that time. |
