Patent ID: 11899146
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 5:
6. A sensing system, comprising:
a sensor, wherein the sensor receives an optical signal;
a receiving system, wherein the receiving system receives a reflected waveform from the sensor;
a sensing system, wherein the sensing system generates a plurality of first quadrature pairs associated with a first wavelength for a plurality of temporal samples of the reflected waveform associated with a location, and wherein the sensing system generates a second plurality of quadrature pairs associated with a second wavelength for the plurality of temporal samples of the reflected waveform for the location; and
a data acquisition unit, wherein the data acquisition unit comprises a processor, wherein the processor executes one or more instructions to:
determine a first delta phase for each of the plurality of temporal samples of the reflected waveform for the location based, at least in part, on a difference between a first quadrature pair of the plurality of first quadrature pairs associated with a first temporal sample of the plurality of temporal samples and a second quadrature pair of the plurality of first quadrature pairs associated with a second temporal sample of the plurality of temporal samples;
determine a second delta phase for each of the plurality of temporal samples of the reflected waveform for the location based, at least in part, on a difference between a first quadrature pair of the plurality of second quadrature pairs associated with the first temporal sample of the plurality of temporal samples and a second quadrature pair of the plurality of second quadrature pairs associated with the second temporal sample of the plurality of temporal samples;
determine a delta phase difference for each of the plurality of temporal samples of the reflected waveform for the location based, at least in part, on a difference between the first delta phase and the second delta phase;
determine a phase jump of at least one of the first wavelength and the second wavelength based, at least in part, on the delta phase difference;
determine a first average magnitude for each of the plurality of temporal samples associated with the first wavelength;
determine a second average magnitude for each of the plurality of temporal samples associated with the second wavelength; and
determine a corrected phase measurement for the location based, at least in part, on the delta phase difference, the first delta phase, the second delta phase, the first average magnitude and the second average magnitude.