Communications – electrical: acoustic wave systems and devices – Echo systems – Speed determination
Patent
1994-03-28
1995-06-06
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Echo systems
Speed determination
G01S 1560
Patent
active
054228603
ABSTRACT:
In a correlation device, a system and method for measuring velocities using a single coded pulse generator. The correlation device may also include maximum likelihood estimation techniques for processing the echo signals received from a plurality of transducers. The presently preferred embodiment of the device is as a current profiler having a bottom tracking capability for providing vessel velocity.
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"Acoustic bedload velocity estimates using a broadband pulse-pulse time correlation technique", Sutton et al., Journal of the Acoustical Society of America, vol. 92, No. 3, Sep. 1992; pp. 1692-1698.
"A New Wideband Spread Target Maximum Likelihood Estimator for Blood Velocity Estimation--Part II: Evaluation of Estimators with Experimental Data", Ferrara et al, IEEE Transactions on Ultrasonics, Ferroelectric and Frequency Control vol. 38, No. 1, 1 Jan. 1991, New York; pp. 17-26.
"Acoustic Correlator Current Profiler", Bradley et al., Proceedings of the IEEE Fourth Working Conference on Current Measurement, 1 Aug. 1990, Clinton, Md. pp. 306-313.
Bradley Steven E.
Rowe Francis D.
Pihulic Daniel T.
Rowe, Deines Instruments Incorporated
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