Folkestad and Mylvaganam use a chirp technique to resolve an ambiguity in time-of-flight measurements. An alternative is to trigger an oscilloscope on one cycle of the initial tone burst, then vary the frequency. In the delayed burst, the correct cycle for time-of-flight measurements remains stationary.<
Published in:
Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on
(Volume:42
,
Issue:
4
)
Date of Publication: July 1995