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DOPPLER MEASUREMENT INSTRUMENT AND DOPPLER MEASUREMENT PROCESSING METHOD

  • US 20130041600A1
  • Filed: 08/08/2012
  • Published: 02/14/2013
  • Est. Priority Date: 08/08/2011
  • Status: Active Grant
First Claim
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1. A fluid flow measurement instrument, comprising:

  • a sensor producing a time domain signal representative of reflections of an emitted signal; and

    a meter being coupled to the sensor and configured to;

    receive the time domain signal;

    create two or more spectral estimates for the time domain signal, wherein said two or more spectral estimates have different frequency ranges and resolutions;

    determine a frequency offset value using one or more of the two or more spectral estimates; and

    convert the frequency offset value into a fluid velocity.

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