A TECHNIQUE FOR ELIMINATING AMBIGUITY WHEN MAKING PULSE-ECHO TIMING MEASUREMENTS

摘要

A method of measuring in a material a time-of-flight of a signal having a first signal burst and a second signal burst, the first signal burst having a first set of cycles and the second signal burst having a second set of cycles. The method includes identifying a cycle in the second signal burst corresponding to a cycle in the first signal burst, to measure the time-of-flight of the signal.