NO940666L - Fremgangsmåte ved dipoldetektering - Google Patents

Fremgangsmåte ved dipoldetektering

Info

Publication number
NO940666L
NO940666L NO940666A NO940666A NO940666L NO 940666 L NO940666 L NO 940666L NO 940666 A NO940666 A NO 940666A NO 940666 A NO940666 A NO 940666A NO 940666 L NO940666 L NO 940666L
Authority
NO
Norway
Prior art keywords
dipole
location
processing
detection
sensors
Prior art date
Application number
NO940666A
Other languages
English (en)
Other versions
NO940666D0 (no
Inventor
Ben R Breed
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of NO940666D0 publication Critical patent/NO940666D0/no
Publication of NO940666L publication Critical patent/NO940666L/no

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/004—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Geophysics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Measuring Magnetic Variables (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

Dipoldetekterings- og lokaliserlngssystemer og fremgangsmåter som anvender forbedrede behandllngsteknlkker. Den første behandllngsteknlkken sørger for høyere rommessig oppløsning ved å anvende maksimal sannsynlighetsstråle- formingsbehandllng for å detektere og lokalisere en dlpol (13) på en måte analog til behandling av bølgefor- plantningsfenomen. Den høye oppløsningsteknikken gjør bruk av innbefatning av data utledet fra en rekke av magnetiske sensorer (11) som er anordnet i form av en vektor med koeffisienter stedenfor en matrise. Denne vektoren kan være enten de magnetiske feltkomponentene eller Anderson-funksjonsekspansjonskoefflsientene og er anvendt for å danne en dyadlsk matrise (35), til hvilken et multippel av en identitetsmatrise (37) er tillagt for å forhindre slngularitet. Den andre behandlingsteknlkken bruker mer enn tre Anderson-funksJonsekspansJoner (34a) for å tilveiebringe detektering og lokalisering av dipolen (13). Bruk av nere enn tre Anderson-funksJoner normaliserer ut mer effektivt støyavhengigheten ved å tilveiebringe en bedre støyfremstllllng og sørger for detektering og lokalisering av multipeler. Den tredje forbedrede behandlingsmetode sørger for multlppel-pass multlppel-målbehandling av data målt av rekken med sensorer (11). Først bestemnes lokaliseringen av den største dipolen (13a) i feltrommet til rekken og dens momentorientering bestemmes. Feltet på grunn av dipolen (13a) ved lokaliseringen og orienteringen blir så fjernet (42) fra måledata og behandlingen gjentas. Feltet fjernes ved å subtrahere ut (42) dens bidrag ved hver av sensorene (11) i rekken og så vurderes lokaliseringen av nest største dipol (13b). Simuleringer har vist at denne behandlingen sørger for muligheten til å oppløse multippeldlpoler når det anvendes så mange manger som nødvendig.
NO940666A 1993-03-01 1994-02-25 Fremgangsmåte ved dipoldetektering NO940666L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/024,574 US5337259A (en) 1993-03-01 1993-03-01 Dipole detection and localization processing

Publications (2)

Publication Number Publication Date
NO940666D0 NO940666D0 (no) 1994-02-25
NO940666L true NO940666L (no) 1994-09-02

Family

ID=21821300

Family Applications (1)

Application Number Title Priority Date Filing Date
NO940666A NO940666L (no) 1993-03-01 1994-02-25 Fremgangsmåte ved dipoldetektering

Country Status (10)

Country Link
US (1) US5337259A (no)
EP (2) EP0614095B1 (no)
JP (1) JP3054307B2 (no)
KR (1) KR0132758B1 (no)
AU (1) AU656871B2 (no)
CA (1) CA2115388C (no)
DE (2) DE69409857T2 (no)
IL (1) IL108573A (no)
NO (1) NO940666L (no)
SG (2) SG85618A1 (no)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6757557B1 (en) * 1992-08-14 2004-06-29 British Telecommunications Position location system
JP3432825B2 (ja) 1992-08-14 2003-08-04 ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 位置決定システム
US5731996A (en) * 1996-03-05 1998-03-24 Hughes Electronics Dipole moment detector and localizer
US5783944A (en) * 1996-05-28 1998-07-21 Hughes Electronics Processing method for estimation of magnetizable object or source
US5831873A (en) * 1997-01-27 1998-11-03 Kohnen; Kirk K. Magnetic dipole target classifier and method
US6292758B1 (en) * 1998-10-19 2001-09-18 Raytheon Company Linear perturbation method for Kalman filter tracking of magnetic field sources
KR100478733B1 (ko) * 2002-06-19 2005-03-24 학교법인 포항공과대학교 쌍극입자의 쌍극자 크기 계측 방법
US7633518B2 (en) * 2002-10-25 2009-12-15 Quantum Magnetics, Inc. Object detection portal with video display overlay
FR2888645B1 (fr) * 2005-07-12 2007-10-12 Ixsea Soc Par Actions Simplifi Procede d'acquisition et de traitement de donnees magnetometriques par des mises a jour locales et en temps reel
US7756720B2 (en) * 2006-01-25 2010-07-13 Fameball, Inc. Method and system for the objective quantification of fame
US20090125918A1 (en) * 2007-11-13 2009-05-14 Microsoft Corporation Shared sensing system interfaces
US9864019B2 (en) 2012-10-24 2018-01-09 Cae Inc. Magnetic sensor system
FR2998380B1 (fr) * 2012-11-20 2016-01-08 Commissariat Energie Atomique Procede de reconnaissance automatique d'un objet magnetique mobile
FR3029642B1 (fr) * 2014-12-09 2017-12-08 ISKn Procede de localisation d'au moins un objet magnetique mobile, et systeme associe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710708A (en) * 1981-04-27 1987-12-01 Develco Method and apparatus employing received independent magnetic field components of a transmitted alternating magnetic field for determining location
US4492923A (en) * 1982-06-21 1985-01-08 The United States Of America As Represented By The Secretary Of The Navy Apparatus for measuring the spatial scalar variation of a magnetic field with vector magnetic sensors on a moderately stable moving platform
US4600883A (en) * 1983-09-21 1986-07-15 Honeywell Inc. Apparatus and method for determining the range and bearing in a plane of an object characterized by an electric or magnetic dipole
US4622644A (en) * 1984-05-10 1986-11-11 Position Orientation Systems, Ltd. Magnetic position and orientation measurement system
US5239474A (en) * 1990-11-20 1993-08-24 Hughes Aircraft Company Dipole moment detection and localization
US5134369A (en) * 1991-03-12 1992-07-28 Hughes Aircraft Company Three axis magnetometer sensor field alignment and registration
US5264793A (en) * 1991-04-11 1993-11-23 Hughes Aircraft Company Split array dipole moment detection and localization
US5387863A (en) * 1992-04-14 1995-02-07 Hughes Aircraft Company Synthetic aperture array dipole moment detector and localizer

Also Published As

Publication number Publication date
CA2115388C (en) 1997-12-30
IL108573A (en) 1996-11-14
SG52519A1 (en) 1998-09-28
DE69425681D1 (de) 2000-09-28
US5337259A (en) 1994-08-09
DE69409857D1 (de) 1998-06-04
NO940666D0 (no) 1994-02-25
EP0614095A3 (en) 1995-01-25
DE69409857T2 (de) 1998-09-24
KR0132758B1 (ko) 1998-04-24
DE69425681T2 (de) 2001-07-12
EP0614095B1 (en) 1998-04-29
AU656871B2 (en) 1995-02-16
JPH06324128A (ja) 1994-11-25
SG85618A1 (en) 2002-01-15
EP0811856B1 (en) 2000-08-23
AU5501094A (en) 1994-09-08
KR940022293A (ko) 1994-10-20
EP0811856A2 (en) 1997-12-10
JP3054307B2 (ja) 2000-06-19
CA2115388A1 (en) 1994-09-02
EP0811856A3 (en) 1998-01-14
EP0614095A2 (en) 1994-09-07

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