Coastal Engineering 1996 · 1997 · 14 citations · 0 references
Natural SciencesOcean EngineeringOceanographyOcean InstrumentationOcean WavesPhysical OceanographyCurrent Measurement InstrumentsDoppler UltrasonographyDoppler Velocity MeasurementWave Measurement InstrumentsWave MeasurementsWave SpectraCurrent Velocity SensingDirectional Wave SpectraDirectional Wave SpectrumUltrasonic WavesVelocity ComponentsWave Data AcquisitionWave Direction EstimationWave Spectrum Measurement
This paper presents an improved submerged Doppler-type directional wave meter which has the capability of measuring water surface elevations and multiple current velocity components. These components are determined from Doppler frequency shifts of ultrasonic waves in water. The improved system has proven to be capable of successfully obtaining tide, current and directional wave data. In addition, this directional wave meter has accurately estimated directional wave spectra in severe sea conditions with the use of some techniques introduced in this paper.