GB9009510D0 - Radio frequency distance measurement technique - Google Patents
Radio frequency distance measurement techniqueInfo
- 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- Withdrawn
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
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- General Health & Medical Sciences (AREA)
- Burglar Alarm Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
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)
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 |
JP3147306B2 (en) * | 1996-10-17 | 2001-03-19 | ピンポイント コーポレイション | Item 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 |
EP3352107A1 (en) | 2008-03-03 | 2018-07-25 | NIKE Innovate C.V. | Interactive athletic equipment system |
US20100184564A1 (en) | 2008-12-05 | 2010-07-22 | Nike, Inc. | Athletic Performance Monitoring Systems and Methods in a Team Sports Environment |
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 |
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 |
US9411940B2 (en) | 2011-02-17 | 2016-08-09 | Nike, Inc. | Selecting and correlating physical activity data with image data |
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)
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 |
-
1990
- 1990-04-27 GB GB9009510A patent/GB2243739A/en not_active Withdrawn
-
1991
- 1991-02-13 GB GB9103079A patent/GB2246891A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB9103079D0 (en) | 1991-03-27 |
GB2246891A (en) | 1992-02-12 |
GB2243739A (en) | 1991-11-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |