Physica Scripta · 1979 · 16 citations · 2 references
EngineeringMeasurementOptical TestingInterferometryCombined FringeEducationDifficult Flow ProblemsTwo-spot Backscatter LdvCalibrationOptical DiagnosticsInstrumentationOptical SystemsPhotonicsComputer EngineeringTime MetrologyNew AnemometerPhoton StatisticBurst-correlator ProcessorIndividual PhotonsFlow Measurement
A new anemometer will be described for application to a wide range of difficult flow problems. This comprises a combined optical fringe and two-spot optical system of very great flexibility and a 10 ns "burst correlator" which can record and process bursts of individual photons from single particle transits. Operation is by photon correlation followed by Fourier cosine transformation at turbulence frequencies up to 10 KHz.
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