GB1527604A - Radio homers for use in mobile craft - Google Patents

Radio homers for use in mobile craft

Info

Publication number
GB1527604A
GB1527604A GB3440075A GB3440075A GB1527604A GB 1527604 A GB1527604 A GB 1527604A GB 3440075 A GB3440075 A GB 3440075A GB 3440075 A GB3440075 A GB 3440075A GB 1527604 A GB1527604 A GB 1527604A
Authority
GB
United Kingdom
Prior art keywords
radio
craft
heading
aug
athwartships
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
GB3440075A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3440075A priority Critical patent/GB1527604A/en
Publication of GB1527604A publication Critical patent/GB1527604A/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
    • G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
    • G01S3/22—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic derived from different combinations of signals from separate antennas, e.g. comparing sum with difference

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)

Abstract

1527604 Radio direction finding C E COOPER 3 Aug 1976 [19 Aug 1975] 34400/75 Heading H4D A radio homer, having a pair of antennas 10 and 11 each mounted on a craft athwartships at a predetermined spacing, includes a pair of feeder line sections 12, 13 each connected to a respective antenna and mounted on a printed circuit board 14 in close proximity to provide quadrature coupling between the two lines. The system is thus arranged to provide a cardioid directional pattern having a null in the athwartships direction which is reversed by alternating the connections made in electronic switch 15 whereby the radiation pattern in the axial direction of heading of the craft is the same for both alternating cycles. Modulator 18 operates at an audio frequency to operate switch 15 whereby a tone may be produced at speaker 19 for off axis receiving directions, or the bearing may be measured by phase detector 20.
GB3440075A 1976-08-03 1976-08-03 Radio homers for use in mobile craft Expired GB1527604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3440075A GB1527604A (en) 1976-08-03 1976-08-03 Radio homers for use in mobile craft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3440075A GB1527604A (en) 1976-08-03 1976-08-03 Radio homers for use in mobile craft

Publications (1)

Publication Number Publication Date
GB1527604A true GB1527604A (en) 1978-10-04

Family

ID=10365186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3440075A Expired GB1527604A (en) 1976-08-03 1976-08-03 Radio homers for use in mobile craft

Country Status (1)

Country Link
GB (1) GB1527604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008060A1 (en) * 1989-01-21 1990-07-26 Searchrite Limited Emergency rescue system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008060A1 (en) * 1989-01-21 1990-07-26 Searchrite Limited Emergency rescue system

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920803