GB9415193D0 - Improvements in or relating to radio frequency direction finding apparatus - Google Patents

Improvements in or relating to radio frequency direction finding apparatus

Info

Publication number
GB9415193D0
GB9415193D0 GBGB9415193.3A GB9415193A GB9415193D0 GB 9415193 D0 GB9415193 D0 GB 9415193D0 GB 9415193 A GB9415193 A GB 9415193A GB 9415193 D0 GB9415193 D0 GB 9415193D0
Authority
GB
United Kingdom
Prior art keywords
relating
radio frequency
frequency direction
direction finding
finding apparatus
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.)
Granted
Application number
GBGB9415193.3A
Other versions
GB2327001B (en
GB2327001A (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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research 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 Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to GB9415193A priority Critical patent/GB2327001B/en
Publication of GB9415193D0 publication Critical patent/GB9415193D0/en
Publication of GB2327001A publication Critical patent/GB2327001A/en
Application granted granted Critical
Publication of GB2327001B publication Critical patent/GB2327001B/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
    • G01S3/32—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
    • 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
    • G01S3/04—Details
    • G01S3/043—Receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Spectrometry And Color Measurement (AREA)
GB9415193A 1994-07-28 1994-07-28 Improvements in or relating to radio frequency direction finding apparatus Expired - Fee Related GB2327001B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9415193A GB2327001B (en) 1994-07-28 1994-07-28 Improvements in or relating to radio frequency direction finding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9415193A GB2327001B (en) 1994-07-28 1994-07-28 Improvements in or relating to radio frequency direction finding apparatus

Publications (3)

Publication Number Publication Date
GB9415193D0 true GB9415193D0 (en) 1998-10-14
GB2327001A GB2327001A (en) 1999-01-06
GB2327001B GB2327001B (en) 1999-03-31

Family

ID=10758994

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9415193A Expired - Fee Related GB2327001B (en) 1994-07-28 1994-07-28 Improvements in or relating to radio frequency direction finding apparatus

Country Status (1)

Country Link
GB (1) GB2327001B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809823B1 (en) * 2000-06-06 2005-02-04 Thomson Csf DIFFERENTIAL MEASURER OF WAVE PROPAGATION TIME AND DEVICE FOR REPERTING THE DIRECTION OF PROPAGATION OF A WAVE
US7801447B1 (en) * 2006-02-28 2010-09-21 Lockheed Martin Corporation Method and system for signal processing by modulation of an optical signal with a multichannel radio frequency signal
US20120140236A1 (en) * 2010-06-14 2012-06-07 S2 Corporation Spatial Spectral Photonic Receiver for Direction Finding via Wideband Phase Sensitive Spectral Mapping

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003014A1 (en) * 1984-11-12 1986-05-22 The Commonwealth Of Australia, Assistant Secretary A mach-zehnder acousto-optic signal processor for electronic support measures
WO1986007451A1 (en) * 1985-06-12 1986-12-18 The Commonwealth Of Australia, Care Of The Secreta A prismatic acousto-optic direction-of-arrival interferometer for radio frequency signals

Also Published As

Publication number Publication date
GB2327001B (en) 1999-03-31
GB2327001A (en) 1999-01-06

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Legal Events

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

Effective date: 20040728