DE602004005713D1 - Filterkalkulation für sensorarray-induzierten phasenwinkel unabhängig von dem demodulations-phasenoffset des phasengenerierten trägers - Google Patents

Filterkalkulation für sensorarray-induzierten phasenwinkel unabhängig von dem demodulations-phasenoffset des phasengenerierten trägers

Info

Publication number
DE602004005713D1
DE602004005713D1 DE602004005713T DE602004005713T DE602004005713D1 DE 602004005713 D1 DE602004005713 D1 DE 602004005713D1 DE 602004005713 T DE602004005713 T DE 602004005713T DE 602004005713 T DE602004005713 T DE 602004005713T DE 602004005713 D1 DE602004005713 D1 DE 602004005713D1
Authority
DE
Germany
Prior art keywords
phase
sensor array
demodulation
filter calculation
induced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE602004005713T
Other languages
English (en)
Other versions
DE602004005713T2 (de
Inventor
David B Hall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Corp
Original Assignee
Northrop Grumman Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northrop Grumman Corp filed Critical Northrop Grumman Corp
Publication of DE602004005713D1 publication Critical patent/DE602004005713D1/de
Application granted granted Critical
Publication of DE602004005713T2 publication Critical patent/DE602004005713T2/de
Anticipated expiration legal-status Critical
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Optical Transform (AREA)
  • Optical Communication System (AREA)
  • Gyroscopes (AREA)
  • Time-Division Multiplex Systems (AREA)
DE602004005713T 2003-07-09 2004-06-17 Filterkalkulation für sensorarray-induzierten phasenwinkel unabhängig von dem demodulations-phasenoffset des phasengenerierten trägers Active DE602004005713T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US615729 1990-11-19
US10/615,729 US7038785B2 (en) 2003-07-09 2003-07-09 Filtered calculation of sensor array induced phase angle independent from demodulation phase offset of phase generated carrier
PCT/US2004/019147 WO2005010465A2 (en) 2003-07-09 2004-06-17 Filtered calculation of sensor array induced phase angle independent from demodulation phase offset of phase generated carrier

Publications (2)

Publication Number Publication Date
DE602004005713D1 true DE602004005713D1 (de) 2007-05-16
DE602004005713T2 DE602004005713T2 (de) 2007-12-27

Family

ID=33564626

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004005713T Active DE602004005713T2 (de) 2003-07-09 2004-06-17 Filterkalkulation für sensorarray-induzierten phasenwinkel unabhängig von dem demodulations-phasenoffset des phasengenerierten trägers

Country Status (8)

Country Link
US (1) US7038785B2 (de)
EP (1) EP1642091B1 (de)
JP (1) JP4860467B2 (de)
AU (1) AU2004260029A1 (de)
CA (1) CA2533272A1 (de)
DE (1) DE602004005713T2 (de)
NO (1) NO20060634L (de)
WO (1) WO2005010465A2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7336365B2 (en) * 2005-02-11 2008-02-26 Optoplan As Method and apparatus for suppression of crosstalk and noise in time-division multiplexed interferometric sensor systems
US8284023B2 (en) * 2005-08-24 2012-10-09 Inner Loc, LLC Internal locking apparatus and methods for making and using same
US7339678B2 (en) 2005-11-09 2008-03-04 Northrop Grumman Corporation Method and system of using odd harmonics for phase generated carrier homodyne
US9369321B2 (en) * 2011-09-22 2016-06-14 Northrop Grumman Systems Corporation Increasing sensor data carrying capability of phase generated carriers
CN106643813A (zh) * 2016-10-14 2017-05-10 中国人民解放军国防科学技术大学 一种含有相位载波调制信号的干涉光复光场合成方法
DE102016223489A1 (de) * 2016-11-25 2018-05-30 Robert Bosch Gmbh Verfahren sowie Vorrichtung zur Filterung eines Sensorsignals eines Sensors
WO2019157343A1 (en) * 2018-02-08 2019-08-15 Sensor 42, LLC Intelligent poe sensor architecture, system and method
JP7225792B2 (ja) * 2018-12-26 2023-02-21 沖電気工業株式会社 干渉型光ファイバセンサシステム、復調装置、復調方法及びプログラム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552457A (en) 1983-02-01 1985-11-12 Giallorenzi Thomas G Fiber optic interferometer using two wavelengths or variable wavelength
US5452086A (en) 1993-03-22 1995-09-19 Litton Systems, Inc. Interferometer amplitude modulation reduction circuit
US5680489A (en) * 1996-06-28 1997-10-21 The United States Of America As Represented By The Secretary Of The Navy Optical sensor system utilizing bragg grating sensors
US5903350A (en) 1997-02-03 1999-05-11 Optiphase, Inc. Demodulator and method useful for multiplexed optical sensors
US5917597A (en) * 1998-02-04 1999-06-29 Litton Systems, Inc. Noise suppression apparatus and method for time division multiplexed fiber optic sensor arrays
US6134281A (en) * 1998-02-10 2000-10-17 Litton Systems, Inc. Method and apparatus for calibration of a signal processing system utilizing digital down converters
US6008900A (en) 1998-02-10 1999-12-28 Litton Systems, Inc. Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system
US6154308A (en) * 1998-07-30 2000-11-28 Litton Systems, Inc. Two step discrete phase shift demodulation method for fiber optic sensor arrays
US6122057A (en) 1999-07-30 2000-09-19 Litton Systems, Inc. Four step discrete phase shift demodulation method for fiber optic sensor arrays
US7038784B2 (en) * 2003-06-20 2006-05-02 Northrop Grumman Corporation Calculation of sensor array induced phase angle independent from demodulation phase offset of phase generated carrier

Also Published As

Publication number Publication date
WO2005010465A3 (en) 2005-05-26
JP2007527647A (ja) 2007-09-27
NO20060634L (no) 2006-04-10
AU2004260029A1 (en) 2005-02-03
US7038785B2 (en) 2006-05-02
DE602004005713T2 (de) 2007-12-27
EP1642091A2 (de) 2006-04-05
EP1642091B1 (de) 2007-04-04
WO2005010465A2 (en) 2005-02-03
US20050007597A1 (en) 2005-01-13
CA2533272A1 (en) 2005-02-03
JP4860467B2 (ja) 2012-01-25

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