DOPPLER MEASUREMENT INSTRUMENT AND DOPPLER MEASUREMENT PROCESSING METHOD
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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Abstract
A fluid flow measurement instrument is provided. The measurement instrument includes 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. Other aspects are described and claimed.
21 Citations
17 Claims
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1. A fluid flow measurement instrument, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A fluid flow measurement method, comprising:
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producing a time domain signal representative of reflections of an emitted signal via a sensor; and receiving at a meter the time domain signal; creating with the meter two or more spectral estimates for the time domain signal, wherein said two or more spectral estimates have different frequency ranges and resolutions; determining with the meter a frequency offset value using one or more of the two or more spectral estimates; and converting with the meter the frequency offset value into a fluid velocity. - View Dependent Claims (14, 15, 16)
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17. A program product for fluid flow measurement, comprising:
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a device readable program storage device storing device readable program code, the device readable program code comprising; device readable program code configured to produce a time domain signal representative of reflections of an emitted signal via a sensor; and device readable program code configured to receive at a meter the time domain signal; device readable program code configured to create with the meter two or more spectral estimates for the time domain signal, wherein said two or more spectral estimates have different frequency ranges and resolutions; device readable program code configured to determine with the meter a frequency offset value using one or more of the two or more spectral estimates; and device readable program code configured to convert with the meter the frequency offset value into a fluid velocity.
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Specification