GB2294375B - Position monitoring systems - Google Patents

Position monitoring systems

Info

Publication number
GB2294375B
GB2294375B GB9421295A GB9421295A GB2294375B GB 2294375 B GB2294375 B GB 2294375B GB 9421295 A GB9421295 A GB 9421295A GB 9421295 A GB9421295 A GB 9421295A GB 2294375 B GB2294375 B GB 2294375B
Authority
GB
United Kingdom
Prior art keywords
monitoring systems
position monitoring
systems
monitoring
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
Application number
GB9421295A
Other versions
GB9421295D0 (en
GB2294375A (en
Inventor
Nigel Geoffry Wood
James Thomas Twigg
Paul Keith Cullen
Ian Donald Clemon
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.)
Q M SYSTEMS Ltd
Original Assignee
Q M SYSTEMS Ltd
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 Q M SYSTEMS Ltd filed Critical Q M SYSTEMS Ltd
Priority to GB9421295A priority Critical patent/GB2294375B/en
Publication of GB9421295D0 publication Critical patent/GB9421295D0/en
Publication of GB2294375A publication Critical patent/GB2294375A/en
Application granted granted Critical
Publication of GB2294375B publication Critical patent/GB2294375B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • G01S1/68—Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
    • 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
    • G01S1/08—Systems for determining direction or position line
    • 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
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • 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
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB9421295A 1994-10-22 1994-10-22 Position monitoring systems Expired - Fee Related GB2294375B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9421295A GB2294375B (en) 1994-10-22 1994-10-22 Position monitoring systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9421295A GB2294375B (en) 1994-10-22 1994-10-22 Position monitoring systems

Publications (3)

Publication Number Publication Date
GB9421295D0 GB9421295D0 (en) 1994-12-07
GB2294375A GB2294375A (en) 1996-04-24
GB2294375B true GB2294375B (en) 1997-10-29

Family

ID=10763221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9421295A Expired - Fee Related GB2294375B (en) 1994-10-22 1994-10-22 Position monitoring systems

Country Status (1)

Country Link
GB (1) GB2294375B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2251996A1 (en) * 1997-12-18 1999-06-18 Lucent Technologies Inc. Automatically locating individuals utilizing a combination of wireless media
US6236858B1 (en) 1998-06-30 2001-05-22 Avaya Technology Corp. Wireless terminal automatically alerting user upon wireless terminal entering a specified physical location

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002165A1 (en) * 1981-12-16 1983-06-23 Kachwalla, Zain A position indicating system
GB2240895A (en) * 1990-01-16 1991-08-14 Gordon H Matthews System for monitoring the speed of play of a golfer over a golf course
GB2247131A (en) * 1990-08-02 1992-02-19 Wang James June Ming Golf course ranging and direction-finding system using spread spectrum radiolocation techniques
US5250955A (en) * 1992-06-05 1993-10-05 Lockheed Information Services Company State entry beacon system
EP0568824A2 (en) * 1992-04-08 1993-11-10 Us West New Vector Group, Inc. System for marking zones in a cellular service area
GB2274521A (en) * 1993-01-11 1994-07-27 Hitachi Ltd Production control system
WO1995000821A1 (en) * 1993-06-25 1995-01-05 Omniplex, Inc. Determination of location using time-synchronized cell site transmissions

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002165A1 (en) * 1981-12-16 1983-06-23 Kachwalla, Zain A position indicating system
GB2240895A (en) * 1990-01-16 1991-08-14 Gordon H Matthews System for monitoring the speed of play of a golfer over a golf course
GB2247131A (en) * 1990-08-02 1992-02-19 Wang James June Ming Golf course ranging and direction-finding system using spread spectrum radiolocation techniques
EP0568824A2 (en) * 1992-04-08 1993-11-10 Us West New Vector Group, Inc. System for marking zones in a cellular service area
US5250955A (en) * 1992-06-05 1993-10-05 Lockheed Information Services Company State entry beacon system
GB2274521A (en) * 1993-01-11 1994-07-27 Hitachi Ltd Production control system
WO1995000821A1 (en) * 1993-06-25 1995-01-05 Omniplex, Inc. Determination of location using time-synchronized cell site transmissions

Also Published As

Publication number Publication date
GB9421295D0 (en) 1994-12-07
GB2294375A (en) 1996-04-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20081022