GB2243041B - Direction finding system - Google Patents

Direction finding system

Info

Publication number
GB2243041B
GB2243041B GB9008283A GB9008283A GB2243041B GB 2243041 B GB2243041 B GB 2243041B GB 9008283 A GB9008283 A GB 9008283A GB 9008283 A GB9008283 A GB 9008283A GB 2243041 B GB2243041 B GB 2243041B
Authority
GB
United Kingdom
Prior art keywords
direction finding
finding system
finding
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
GB9008283A
Other versions
GB9008283D0 (en
GB2243041A (en
Inventor
Robert Nicholas Alcock
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.)
Philips Electronics UK Ltd
EMI Group Electronics Ltd
Original Assignee
Thorn EMI Electronics Ltd
Philips Electronic and Associated Industries 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 Thorn EMI Electronics Ltd, Philips Electronic and Associated Industries Ltd filed Critical Thorn EMI Electronics Ltd
Priority to GB9008283A priority Critical patent/GB2243041B/en
Publication of GB9008283D0 publication Critical patent/GB9008283D0/en
Publication of GB2243041A publication Critical patent/GB2243041A/en
Application granted granted Critical
Publication of GB2243041B publication Critical patent/GB2243041B/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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/28—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics
    • G01S3/30—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics derived directly from separate directional systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
GB9008283A 1990-04-11 1990-04-11 Direction finding system Expired - Fee Related GB2243041B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9008283A GB2243041B (en) 1990-04-11 1990-04-11 Direction finding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9008283A GB2243041B (en) 1990-04-11 1990-04-11 Direction finding system

Publications (3)

Publication Number Publication Date
GB9008283D0 GB9008283D0 (en) 1990-11-21
GB2243041A GB2243041A (en) 1991-10-16
GB2243041B true GB2243041B (en) 1994-02-23

Family

ID=10674320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9008283A Expired - Fee Related GB2243041B (en) 1990-04-11 1990-04-11 Direction finding system

Country Status (1)

Country Link
GB (1) GB2243041B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11398685B2 (en) 2019-10-18 2022-07-26 Rohde & Schwarz Gmbh & Co. Kg Antenna system and antenna controlling method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105596B (en) 1996-05-27 2000-09-15 Nokia Networks Oy A method for determining the location of a mobile station
EP2551695A1 (en) * 2011-07-25 2013-01-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Concept for determining an orientation of a mobile device
US9551777B2 (en) * 2012-12-06 2017-01-24 Robert Eugene Stoddard Direction finding using antenna array rotation
EP3285083B1 (en) 2016-08-19 2019-06-12 Rohde & Schwarz GmbH & Co. KG Method for direction finding and direction finding antenna unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141602A (en) * 1983-06-17 1984-12-19 Philips Electronic Associated R f system
GB2192764A (en) * 1984-05-16 1988-01-20 Philips Electronic Associated Detecting the position, within a sequence of data elements of first and second kinds, of that element or pair of elements which lies at the centre of the or each largest group of elements of the first kind
EP0432294A1 (en) * 1989-12-12 1991-06-19 LITEF GmbH Method to determine the azimuth and elevation angles of incoming direction of high frequency pulses by means of monopulse amplitude evaluation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141602A (en) * 1983-06-17 1984-12-19 Philips Electronic Associated R f system
GB2192764A (en) * 1984-05-16 1988-01-20 Philips Electronic Associated Detecting the position, within a sequence of data elements of first and second kinds, of that element or pair of elements which lies at the centre of the or each largest group of elements of the first kind
EP0432294A1 (en) * 1989-12-12 1991-06-19 LITEF GmbH Method to determine the azimuth and elevation angles of incoming direction of high frequency pulses by means of monopulse amplitude evaluation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11398685B2 (en) 2019-10-18 2022-07-26 Rohde & Schwarz Gmbh & Co. Kg Antenna system and antenna controlling method

Also Published As

Publication number Publication date
GB9008283D0 (en) 1990-11-21
GB2243041A (en) 1991-10-16

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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: 19940523