GB2286306B - Direction finding apparatus - Google Patents

Direction finding apparatus

Info

Publication number
GB2286306B
GB2286306B GB9401828A GB9401828A GB2286306B GB 2286306 B GB2286306 B GB 2286306B GB 9401828 A GB9401828 A GB 9401828A GB 9401828 A GB9401828 A GB 9401828A GB 2286306 B GB2286306 B GB 2286306B
Authority
GB
United Kingdom
Prior art keywords
direction finding
finding apparatus
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
GB9401828A
Other versions
GB9401828D0 (en
GB2286306A (en
Inventor
David Rodney Thwaites
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.)
BAE Systems Defence Systems Ltd
Original Assignee
Siemens Plessey Electronic Systems 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 Siemens Plessey Electronic Systems Ltd filed Critical Siemens Plessey Electronic Systems Ltd
Priority to GB9401828A priority Critical patent/GB2286306B/en
Publication of GB9401828D0 publication Critical patent/GB9401828D0/en
Publication of GB2286306A publication Critical patent/GB2286306A/en
Application granted granted Critical
Publication of GB2286306B publication Critical patent/GB2286306B/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
    • G01S3/46—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
    • 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
    • G01S3/023—Monitoring or calibrating

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)
GB9401828A 1994-02-01 1994-02-01 Direction finding apparatus Expired - Fee Related GB2286306B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9401828A GB2286306B (en) 1994-02-01 1994-02-01 Direction finding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9401828A GB2286306B (en) 1994-02-01 1994-02-01 Direction finding apparatus

Publications (3)

Publication Number Publication Date
GB9401828D0 GB9401828D0 (en) 1994-06-22
GB2286306A GB2286306A (en) 1995-08-09
GB2286306B true GB2286306B (en) 1997-10-29

Family

ID=10749618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9401828A Expired - Fee Related GB2286306B (en) 1994-02-01 1994-02-01 Direction finding apparatus

Country Status (1)

Country Link
GB (1) GB2286306B (en)

Also Published As

Publication number Publication date
GB9401828D0 (en) 1994-06-22
GB2286306A (en) 1995-08-09

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Legal Events

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

Effective date: 20010201