Data processing apparatus

Details Data processing apparatus Data processing apparatus

G - Physics

01

F

354/141

G01F 1/712 (2006.01) G06F 17/15 (2006.01) G06G 7/19 (2006.01)

Patent

CA 1114511

ABSTRACT OF THE DISCLOSURE The present invention relates to apparatus for tracking the peak of a correlation function between two signals. A first correlator is responsive to the signals and provides a coarse measure of the position of the peak. A second correlator is also responsive to the signals and tracks the position of the peak when the coarse measure corresponds to the tracking range of the second correlator. The first correlator is connected to the second correlator for causing the tracking range thereof to correspond to the coarse measure. The apparatus finds particular use as a flowmeter in which flow velocity is deter- mined by identifying the time delay between the two signals. If the distance between the points of derivation of the two signals is constant, the flow velocity is inversely proport- ional to the identified time delay.

328224

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