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GB2096854B - Improvements in and relating to direction finding systems - Google Patents

Improvements in and relating to direction finding systems

Info

Publication number
GB2096854B
GB2096854B GB8111983A GB8111983A GB2096854B GB 2096854 B GB2096854 B GB 2096854B GB 8111983 A GB8111983 A GB 8111983A GB 8111983 A GB8111983 A GB 8111983A GB 2096854 B GB2096854 B GB 2096854B
Authority
GB
United Kingdom
Prior art keywords
relating
direction finding
finding systems
systems
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
Application number
GB8111983A
Other versions
GB2096854A (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.)
Racal Research Ltd
Racal Ses Ltd
Original Assignee
Racal Research Ltd
Racal Ses 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 Racal Research Ltd, Racal Ses Ltd filed Critical Racal Research Ltd
Priority to GB8111983A priority Critical patent/GB2096854B/en
Publication of GB2096854A publication Critical patent/GB2096854A/en
Application granted granted Critical
Publication of GB2096854B publication Critical patent/GB2096854B/en
Expired 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
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB8111983A 1981-04-15 1981-04-15 Improvements in and relating to direction finding systems Expired GB2096854B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8111983A GB2096854B (en) 1981-04-15 1981-04-15 Improvements in and relating to direction finding systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8111983A GB2096854B (en) 1981-04-15 1981-04-15 Improvements in and relating to direction finding systems

Publications (2)

Publication Number Publication Date
GB2096854A GB2096854A (en) 1982-10-20
GB2096854B true GB2096854B (en) 1985-04-03

Family

ID=10521196

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8111983A Expired GB2096854B (en) 1981-04-15 1981-04-15 Improvements in and relating to direction finding systems

Country Status (1)

Country Link
GB (1) GB2096854B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0116777B1 (en) * 1982-12-22 1990-03-21 The Marconi Company Limited Acoustic direction finding systems
GB2189363A (en) * 1986-04-18 1987-10-21 Philips Electronic Associated Radio direction-finding
GB9121615D0 (en) * 1991-10-11 1991-11-27 Incastec Associates Limited Improvements in or relating to echolocation apparatus
US5812091A (en) * 1996-02-01 1998-09-22 Robinson; Stephen J. Radio interferometric antenna for angle coding
US8717847B2 (en) 2012-03-15 2014-05-06 Echopilot Marine Electronics Limited Sonar apparatus

Also Published As

Publication number Publication date
GB2096854A (en) 1982-10-20

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Legal Events

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