A transmission time fluctuation compensation method for compensating for fluctuation of a transmission time of a radio wave signal, the method comprising:
- calculating a correction value for correcting an initial standby time of a direct wave signal or an indirect wave signal based on a reception time of the direct wave signal and a reception time of the indirect wave signal that follows the direct wave signal;
- calculating a standby time by correcting the initial standby time using the correction value;
- and
- causing the direct wave signal or the indirect wave signal to stand by in accordance with the standby time, wherein
- the calculating the correction value comprises:
- calculating a correction value for increasing the standby time of the direct wave signal when the intensity of the direct wave signal is larger than the intensity of the indirect wave signal;
- and
- calculating a correction value for reducing the standby time of the indirect wave signal when the intensity of the indirect wave signal is larger than the intensity of the direct wave signal.