Title :
A new method for measuring ocean and tidal currents
Author :
Stallworth, L.A.
Author_Institution :
New London Lab., NUSC, Connecticut, USA
Abstract :
Currents induce changes in the travel time of an acoustic signal. This effect can be exploited to measure current velocity. Theoretical calculations are compared with experimental measurements over a 33-km range. Equations and a system layout are presented for measurement of current velocity when the sound speed is spatially variable. Simplifications that are possible when the current direction is known and/or the sound speed is constant are discussed.
Keywords :
Acoustic transducers; Current measurement; Difference equations; Frequency; Phase measurement; Solids; Tides; Time measurement; Timing; Velocity measurement;
Conference_Titel :
Engineering in the Ocean Environment, Ocean 73 - IEEE International Conference on
Conference_Location :
Seattle, WA, USA
DOI :
10.1109/OCEANS.1973.1161231
