Communications – electrical: acoustic wave systems and devices – Echo systems – Speed determination
Reexamination Certificate
2008-01-08
2008-01-08
Pihulic, Daniel (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Echo systems
Speed determination
Reexamination Certificate
active
10769441
ABSTRACT:
A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system is disclosed. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity data. Optionally, wave surface height and pressure data is obtained as well. A sensitivity vector specifically related to the ADCP's transducer array geometry is used in conjunction with maximum likelihood method (MLM), iterative maximum likelihood method (IMLM), or other similar methods to solve a the wave equation at each frequency and produce a frequency-specific wave directional spectrum. The frequency-specific spectra are combined to construct a complete two-dimensional wave directional spectrum.
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Brumleý Blair H.
Strong Brandon S.
Terray Eugene A.
Knobbe Martens Olson & Bear LLP
Pihulic Daniel
Teledyne RD Instruments, Inc.
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