GB2398688A - Tag tracking - Google Patents

Tag tracking Download PDF

Info

Publication number
GB2398688A
GB2398688A GB0405627A GB0405627A GB2398688A GB 2398688 A GB2398688 A GB 2398688A GB 0405627 A GB0405627 A GB 0405627A GB 0405627 A GB0405627 A GB 0405627A GB 2398688 A GB2398688 A GB 2398688A
Authority
GB
United Kingdom
Prior art keywords
tones
tag
mobile tag
phase
measured
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.)
Granted
Application number
GB0405627A
Other versions
GB0405627D0 (en
GB2398688B (en
Inventor
Aled Wynne Jones
Paul Anthony Smith
Paul Joseph Bearpark
Michael Raymond Reynolds
Daniel Reginald Ewart Timson
Andrew Michael Rhodes
Nicolas Vasilopoulos
Peter Duffett-Smith
David Bartlett
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.)
Scientific Generics Ltd
Original Assignee
Scientific Generics 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
Priority claimed from GB0119787A external-priority patent/GB0119787D0/en
Priority claimed from GB0206597A external-priority patent/GB0206597D0/en
Priority claimed from GB0209781A external-priority patent/GB0209781D0/en
Application filed by Scientific Generics Ltd filed Critical Scientific Generics Ltd
Publication of GB0405627D0 publication Critical patent/GB0405627D0/en
Publication of GB2398688A publication Critical patent/GB2398688A/en
Application granted granted Critical
Publication of GB2398688B publication Critical patent/GB2398688B/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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • 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
    • G01S5/02—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
    • G01S5/0205—Details
    • G01S5/021—Calibration, monitoring or correction
    • 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
    • G01S5/0205—Details
    • G01S5/0226—Transmitters
    • 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
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location

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)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The present invention provides a position determining system in which a mobile tag having an unknown position is tracked in space over time. In use, the mobile tag either transmits or receives signals comprising a pair of tones at different frequencies from a number of base stations having known locations. The phase of each of the received signals is then measured and the measured phases are then passed to a processing unit which determines the position of the tag at the time of the transmission of the signals on the basis of the difference between the measured phases of the two tones. In a preferred embodiment, this system is combined with a conventional phase-based position measurement which is derived from phase measurements of similar tones transmitted between the mobile tag and different base stations.

Description

GB 2398688 A continuation (72) Inventor(s): Aled Wynne Jones Paul Anthony
Smith Paul Joseph Bearpark Michael Raymond Reynolds Daniel Reginald Ewart Timson Andrew Michael Rhodes Nicolas Vasilopoulos Peter Duffett-Smith David Bartlett (74) Agent and/or Address for Service: Beresford & Co 16 High Holborn, LONDON, WC1V 6BX, United Kingdom
GB0405627A 2001-08-14 2002-05-14 Tag tracking Expired - Fee Related GB2398688B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0119787A GB0119787D0 (en) 2000-11-15 2001-08-14 Tag tracking
GB0206597A GB0206597D0 (en) 2002-03-20 2002-03-20 Phase based RF location system
GB0209781A GB0209781D0 (en) 2002-04-29 2002-04-29 Location measurement system
PCT/GB2002/002245 WO2003016940A2 (en) 2001-08-14 2002-05-14 Tag tracking

Publications (3)

Publication Number Publication Date
GB0405627D0 GB0405627D0 (en) 2004-04-21
GB2398688A true GB2398688A (en) 2004-08-25
GB2398688B GB2398688B (en) 2005-07-13

Family

ID=27256252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0405627A Expired - Fee Related GB2398688B (en) 2001-08-14 2002-05-14 Tag tracking

Country Status (2)

Country Link
GB (1) GB2398688B (en)
WO (1) WO2003016940A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0319673D0 (en) * 2003-08-21 2003-09-24 Scient Generics Ltd Tag tracking
US7030761B2 (en) 2004-03-16 2006-04-18 Symbol Technologies Multi-resolution object location system and method
GB2445595A (en) * 2007-01-08 2008-07-16 Turftrax Racing Data Ltd Location system
DE102007043649B4 (en) * 2007-09-13 2012-03-22 Siemens Ag Method for increasing the location accuracy of unsynchronized radio subscribers
DE102008034567B4 (en) * 2008-07-24 2010-09-30 Siemens Aktiengesellschaft Method for locating wirelessly communicating radio subscribers
KR102647218B1 (en) * 2016-09-19 2024-03-12 레스메드 센서 테크놀로지스 리미티드 Apparatus, system, and method for detecting physiological movement from audio and multimodal signals
WO2019053228A1 (en) * 2017-09-15 2019-03-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Communication apparatus, method and cellular network usable in a localization of a user equipment using a phase estimate
CN112068086B (en) * 2020-10-17 2022-03-01 中国电波传播研究所（中国电子科技集团公司第二十二研究所） Shore-based multi-channel radar amplitude-phase correction method based on external calibration test data
EP4273572A1 (en) * 2022-05-05 2023-11-08 Stichting IMEC Nederland System, device, and method for estimating position information with respect to at least one target node

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696427A (en) * 1969-06-04 1972-10-03 Geophysique Cie Gle Radio-navigation system
US3774215A (en) * 1970-11-23 1973-11-20 Gen Systems Dev Corp Position locating system
US4283726A (en) * 1978-09-05 1981-08-11 Lewis C. Spence Dual frequency distance measuring system
GB2267623A (en) * 1992-05-21 1993-12-08 Racal Positioning Syst Ltd Radio frequency ranging apparatus
WO1996025673A1 (en) * 1995-02-16 1996-08-22 Nexus 1994 Limited Differential ranging for a frequency-hopped remote position determination system
WO1999030181A1 (en) * 1997-12-10 1999-06-17 Ericsson Inc. Method and system for determining position of a mobile transmitter
US6066967A (en) * 1997-02-07 2000-05-23 Sensytech, Inc. Phase-coherent frequency synthesis with a DDS circuit
WO2002041029A1 (en) * 2000-11-15 2002-05-23 Racetrace Inc. Tag tracking

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696427A (en) * 1969-06-04 1972-10-03 Geophysique Cie Gle Radio-navigation system
US3774215A (en) * 1970-11-23 1973-11-20 Gen Systems Dev Corp Position locating system
US4283726A (en) * 1978-09-05 1981-08-11 Lewis C. Spence Dual frequency distance measuring system
GB2267623A (en) * 1992-05-21 1993-12-08 Racal Positioning Syst Ltd Radio frequency ranging apparatus
WO1996025673A1 (en) * 1995-02-16 1996-08-22 Nexus 1994 Limited Differential ranging for a frequency-hopped remote position determination system
US6066967A (en) * 1997-02-07 2000-05-23 Sensytech, Inc. Phase-coherent frequency synthesis with a DDS circuit
WO1999030181A1 (en) * 1997-12-10 1999-06-17 Ericsson Inc. Method and system for determining position of a mobile transmitter
WO2002041029A1 (en) * 2000-11-15 2002-05-23 Racetrace Inc. Tag tracking

Also Published As

Publication number Publication date
GB0405627D0 (en) 2004-04-21
GB2398688B (en) 2005-07-13
WO2003016940A2 (en) 2003-02-27
WO2003016940A3 (en) 2003-04-24

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100514