GB2111757B - Radio direction finding system - Google Patents

Radio direction finding system

Info

Publication number
GB2111757B
GB2111757B GB08231031A GB8231031A GB2111757B GB 2111757 B GB2111757 B GB 2111757B GB 08231031 A GB08231031 A GB 08231031A GB 8231031 A GB8231031 A GB 8231031A GB 2111757 B GB2111757 B GB 2111757B
Authority
GB
United Kingdom
Prior art keywords
direction finding
finding system
radio direction
radio
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
GB08231031A
Other versions
GB2111757A (en
Inventor
John Barrington Clayton
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB08231031A priority Critical patent/GB2111757B/en
Publication of GB2111757A publication Critical patent/GB2111757A/en
Application granted granted Critical
Publication of GB2111757B publication Critical patent/GB2111757B/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
    • G01S3/28—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
    • G01S3/32—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 from different combinations of signals from separate antennas, e.g. comparing sum with difference
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H01Q3/242—Circumferential scanning

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)
GB08231031A 1981-11-02 1982-10-29 Radio direction finding system Expired GB2111757B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08231031A GB2111757B (en) 1981-11-02 1982-10-29 Radio direction finding system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8132984 1981-11-02
GB08231031A GB2111757B (en) 1981-11-02 1982-10-29 Radio direction finding system

Publications (2)

Publication Number Publication Date
GB2111757A GB2111757A (en) 1983-07-06
GB2111757B true GB2111757B (en) 1985-03-06

Family

ID=26281139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08231031A Expired GB2111757B (en) 1981-11-02 1982-10-29 Radio direction finding system

Country Status (1)

Country Link
GB (1) GB2111757B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2898470B2 (en) * 1992-05-08 1999-06-02 三菱電機株式会社 Switched line type phase shifter
GB0701090D0 (en) 2007-01-19 2007-02-28 Plasma Antennas Ltd A selectable beam antenna
CN111965640B (en) * 2020-07-01 2022-11-18 西安电子科技大学 Large squint high-orbit SAR two-dimensional beam scanning method

Also Published As

Publication number Publication date
GB2111757A (en) 1983-07-06

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Legal Events

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

Effective date: 19941029