GB9009510D0 - Radio frequency distance measurement technique - Google Patents

Radio frequency distance measurement technique

Info

Publication number
GB9009510D0
GB9009510D0 GB909009510A GB9009510A GB9009510D0 GB 9009510 D0 GB9009510 D0 GB 9009510D0 GB 909009510 A GB909009510 A GB 909009510A GB 9009510 A GB9009510 A GB 9009510A GB 9009510 D0 GB9009510 D0 GB 9009510D0
Authority
GB
United Kingdom
Prior art keywords
radio frequency
distance measurement
measurement technique
frequency distance
technique
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.)
Withdrawn
Application number
GB909009510A
Other versions
GB2243739A (en
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.)
ARROWAXE Ltd
Original Assignee
ARROWAXE 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 ARROWAXE Ltd filed Critical ARROWAXE Ltd
Priority to GB9009510A priority Critical patent/GB2243739A/en
Publication of GB9009510D0 publication Critical patent/GB9009510D0/en
Priority to GB9103079A priority patent/GB2246891A/en
Publication of GB2243739A publication Critical patent/GB2243739A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/023—Power management, e.g. system sleep and wake up provisions
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/825—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted with exchange of information between interrogator and responder
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0286—Tampering or removal detection of the child unit from child or article
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms

Landscapes

  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Burglar Alarm Systems (AREA)
GB9009510A 1990-04-27 1990-04-27 Frequency modulation distance measurement of active target Withdrawn GB2243739A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9009510A GB2243739A (en) 1990-04-27 1990-04-27 Frequency modulation distance measurement of active target
GB9103079A GB2246891A (en) 1990-04-27 1991-02-13 Alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9009510A GB2243739A (en) 1990-04-27 1990-04-27 Frequency modulation distance measurement of active target

Publications (2)

Publication Number Publication Date
GB9009510D0 true GB9009510D0 (en) 1990-06-20
GB2243739A GB2243739A (en) 1991-11-06

Family

ID=10675109

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9009510A Withdrawn GB2243739A (en) 1990-04-27 1990-04-27 Frequency modulation distance measurement of active target
GB9103079A Withdrawn GB2246891A (en) 1990-04-27 1991-02-13 Alarm system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9103079A Withdrawn GB2246891A (en) 1990-04-27 1991-02-13 Alarm system

Country Status (1)

Country Link
GB (2) GB2243739A (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589821A (en) * 1994-12-13 1996-12-31 Secure Technologies, Inc. Distance determination and alarm system
FR2738968B1 (en) * 1995-09-19 1997-10-24 Thomson Csf METHOD FOR LOCATING A DATA PACKET TRANSCEIVER AND TRANSCEIVER IMPLEMENTING SAID METHOD
FR2744223B1 (en) * 1996-01-26 1998-03-06 Thomson Csf METHOD FOR DETERMINING THE LEADERSHIP OF A RADIO COMMUNICATION TRANSCEIVER AND TRANSCEIVER IMPLEMENTING THE METHOD
GB2314986A (en) * 1996-07-02 1998-01-14 Alan Michael Cox Electronic child protection system
US6812824B1 (en) 1996-10-17 2004-11-02 Rf Technologies, Inc. Method and apparatus combining a tracking system and a wireless communication system
KR20000049066A (en) * 1996-10-17 2000-07-25 핀포인트 코포레이션 Article tracking system
GB2333876A (en) * 1998-02-02 1999-08-04 Anthony John Hulbert Mobile range sensitive security device
FR2776101B1 (en) * 1998-03-11 2000-09-15 Gerard Gary PORTABLE DEVICE FOR CONTROLLING THE PRESENCE OF AN OBJECT SPECIFICALLY MARKED FOR THIS PURPOSE, IN AN AREA RELATED TO THE DEVICE
GB2344914A (en) * 1998-06-18 2000-06-21 Paul Anthony Delahunty System for protecting an article or child
FR2783955A1 (en) * 1998-09-25 2000-03-31 Richard Hamon Master/slave transmitter/receiver set object/person absence alerting having slave retransmitting coded transmissions and master detecting signal absence/sounding alarm.
GB9917490D0 (en) * 1999-07-27 1999-09-29 Activerf Ltd Improvements relating to security
DE19946161A1 (en) * 1999-09-27 2001-04-26 Siemens Ag Distance measurement method
GB2375424A (en) * 2001-05-08 2002-11-13 Lee Stephen Duffett Personal items protection alarm
AT414178B (en) * 2003-05-05 2006-09-15 Werner Dipl Ing Dietrich METHOD AND DEVICE FOR MARKING DISTANCE LIMITS
NL1028429C2 (en) * 2005-03-01 2006-09-06 Nedap Nv Detection system for person lost at sea, uses RF label in clothes or lifejacket to reflect radar signal modulated with sub carrier wave frequency
GB2442778A (en) * 2006-10-12 2008-04-16 Philip James Smith Portable security system for preventing two or more objects being separated by more than a predetermined distance
CN101978374A (en) 2008-03-03 2011-02-16 耐克国际有限公司 Interactive athletic equipment system
US8628453B2 (en) 2008-12-05 2014-01-14 Nike, Inc. Athletic performance monitoring systems and methods in a team sports environment
US8231506B2 (en) * 2008-12-05 2012-07-31 Nike, Inc. Athletic performance monitoring systems and methods in a team sports environment
US20100184564A1 (en) 2008-12-05 2010-07-22 Nike, Inc. Athletic Performance Monitoring Systems and Methods in a Team Sports Environment
IT1392524B1 (en) 2008-12-31 2012-03-09 Ids Ingegneria Dei Sistemi S P A METHOD FOR INTERFEROMETRIC RADAR MEASUREMENTS
US20120283987A1 (en) 2009-10-14 2012-11-08 Nederlandse Organisatie Voor Toegepast-Natuurweten Schappelijk Onderzoek Tno Fmcw distance measuring method and devices
BR112013011690A2 (en) 2010-11-10 2016-08-09 Nike International Ltd systems and methods for measuring and displaying time-based sport activity
CN103748589B (en) 2011-02-17 2017-12-12 耐克创新有限合伙公司 Track the performance indicators during user takes exercise
ITBO20110562A1 (en) * 2011-10-03 2013-04-04 Calzati Andrea Ditta Individuale METHOD OF SURVEILLING PERSONAL ITEMS AND CORRESPONDING SYSTEM OF SURVEILLANCE

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219410A (en) * 1967-06-16 1971-01-13 Standard Telephones Cables Ltd Radio navigation equipment
US3924065A (en) * 1974-04-05 1975-12-02 Information Identification Inc Coherent, fixed BAUD rate FSK communication method and apparatus
US4177466A (en) * 1977-11-16 1979-12-04 Lo-Jack Corporation Auto theft detection system
CA1277400C (en) * 1986-04-09 1990-12-04 Uri Rapoport Anti-theft and locating system
HUT43774A (en) * 1986-05-15 1987-11-30 Koezponti Banyaszati Fejleszte Method and apparatus for automatic identification living beings and objects
GB2207787B (en) * 1987-08-06 1991-10-30 James Terence Barker Retrieval of lost road vehicles and other articles
GB8924743D0 (en) * 1989-11-02 1989-12-20 Security Alert Ltd Electronic systems for the protection of articles

Also Published As

Publication number Publication date
GB9103079D0 (en) 1991-03-27
GB2246891A (en) 1992-02-12
GB2243739A (en) 1991-11-06

Similar Documents

Publication Publication Date Title
GB9009510D0 (en) Radio frequency distance measurement technique
GB9109190D0 (en) Radio frequency apparatus
GB2219911B (en) Radio frequency transceiver apparatus
GB2242588B (en) Radio receiver
GB9001302D0 (en) Radio receiver
EP0459383A3 (en) Radio receiver
GB2244615B (en) Radio frequency receiver
EP0459440A3 (en) Radio transmitter apparatus
EP0435018A3 (en) Radio receiver
GB2263784B (en) High frequency measuring circuit
EP0576243A3 (en) Radio frequency measuring apparatus
EP0415610A3 (en) Radio receiver
EP0484975A3 (en) Continuous overlapping frequency measurement
GB8915063D0 (en) Radio receiver
GB2263034B (en) Radio frequency amplifiers
GB8620067D0 (en) Radio frequency detector
GB9016564D0 (en) Radio frequency shielding
GB2267623B (en) Radio frequency ranging apparatus
KR960008413B1 (en) Am radio receiver
GB9013915D0 (en) High frequency antenna assembly
GB2232028B (en) Radio frequency network
GB9001383D0 (en) Radio frequency measurement equipment
GB8901698D0 (en) Radio frequency measurement equipment
GB9006540D0 (en) Radio frequency detection unit
GB9004025D0 (en) High frequency measuring circuit

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)