Transmitter and receiver synchronisation for wireless telemetry systems technical field

摘要

A method of transmitting data along tubing in a borehole, comprising generating an acoustic signal using a transmitter at a first location on the tubing, and receiving the acoustic signal at a receiver at a second location on the tubing; the method further comprising:
(i) generating the acoustic signal at the transmitter at a first frequency and bit rate;
(ii) receiving the acoustic signal at the first frequency at the receiver and attempting to synchronise the receiver at the first frequency, and
(iiia) if the synchronisation is successful, continuing to transmit the signal so as to pass the data from the transmitter to the receiver; or
(iiib) if the synchronisation is unsuccessful, adjusting the frequency and/or bit rate of the signal and repeating steps (i) - (iii) on the basis of the adjusted signal.