CA2240628C - Position location system and method - Google Patents

Position location system and method Download PDF

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Publication number
CA2240628C
CA2240628C CA002240628A CA2240628A CA2240628C CA 2240628 C CA2240628 C CA 2240628C CA 002240628 A CA002240628 A CA 002240628A CA 2240628 A CA2240628 A CA 2240628A CA 2240628 C CA2240628 C CA 2240628C
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CA
Canada
Prior art keywords
portable unit
base stations
signal
phase
base station
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.)
Expired - Fee Related
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CA002240628A
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English (en)
French (fr)
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CA2240628A1 (en
Inventor
Steen A. Parl
Julian Bussgang
Jay Weitzen
James M. Zagami
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Signatron Tech Corp
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Signatron Tech Corp
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Publication of CA2240628A1 publication Critical patent/CA2240628A1/en
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Publication of CA2240628C publication Critical patent/CA2240628C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/04—Details
    • G01S1/045—Receivers
CA002240628A 1995-12-15 1996-12-09 Position location system and method Expired - Fee Related CA2240628C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/573,057 US5883598A (en) 1995-12-15 1995-12-15 Position location system and method
US08/573,057 1995-12-15
PCT/US1996/019528 WO1997022888A1 (en) 1995-12-15 1996-12-09 Position location system and method

Publications (2)

Publication Number Publication Date
CA2240628A1 CA2240628A1 (en) 1997-06-26
CA2240628C true CA2240628C (en) 2004-05-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002240628A Expired - Fee Related CA2240628C (en) 1995-12-15 1996-12-09 Position location system and method

Country Status (7)

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US (2) US5883598A (US06259404-20010710-M00002.png)
EP (1) EP0870203B1 (US06259404-20010710-M00002.png)
AT (1) ATE192853T1 (US06259404-20010710-M00002.png)
AU (1) AU1412097A (US06259404-20010710-M00002.png)
CA (1) CA2240628C (US06259404-20010710-M00002.png)
DE (1) DE69608311T2 (US06259404-20010710-M00002.png)
WO (1) WO1997022888A1 (US06259404-20010710-M00002.png)

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WO1997022888A1 (en) 1997-06-26
CA2240628A1 (en) 1997-06-26
EP0870203B1 (en) 2000-05-10
DE69608311D1 (de) 2000-06-15
AU1412097A (en) 1997-07-14
EP0870203A1 (en) 1998-10-14
ATE192853T1 (de) 2000-05-15
US5883598A (en) 1999-03-16
US6259404B1 (en) 2001-07-10

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