System and Method for Recovering a Signal of Interest from a Phase Modulated Signal Using Quadrature Sampling.

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Abstract:

A digital receiver system is used to recover a signal of interest, such as a measured signal, from a phase modulated signal detected from a system utilizing quadrature carriers, such as a fiber optic interferometer sensor system. The digital receiver system includes a quadrature sampling demodulator that samples the phase modulated signal by using quadrature sampling periods to recover the odd and even components of the signal of interest. The digital receiver system can be used with an interferometer sensor system having an array of sensors that multiplex the measurand signals, e.g., using time or wavelength division multiplexing. Sampling with quadrature time samples provides a spacing in time between the samples that allows additional sensors to be multiplexed.

Author(s):
Assard, Gerald L. ; Deus, Antonio L., Iii ; Blakely, Barry A.
Author Organization(s):
DEPARTMENT OF THE NAVY WASHINGTON DC
Descriptive Note:
Patent Application, Filed 10 Nov 97,
Pagination:
0028

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-967 740
Monitor Series:
NAVEXOS
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*DIGITAL SYSTEMS, *PATENT APPLICATIONS, *RECEIVERS, *PHASE MODULATION, FIBER OPTICS, DETECTORS, ARRAYS, SIGNALS, SAMPLING, MULTIPLEXING, DEMODULATION, INVENTIONS, INTERFEROMETERS
Field(s)/Group(s):
Computer Hardware, Electricity and Magnetism, Non-Radio Communications
Keyword(s):
FIBER OPTIC INTERFEROMETERS, QUADRATURE SAMPLING, PHASE MODULATED SIGNAL, MEASURAND SIGNAL, QUADRATURE SAMPLING, DIGITAL RECEIVER SYSTEMS
Report Date:
1997 Nov 10
Creation Date:
1998 Jun 03