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GB1317310A - Radio navigation beacon - Google Patents

Radio navigation beacon

Info

Publication number
GB1317310A
GB1317310A GB1317310DA GB1317310A GB 1317310 A GB1317310 A GB 1317310A GB 1317310D A GB1317310D A GB 1317310DA GB 1317310 A GB1317310 A GB 1317310A
Authority
GB
United Kingdom
Prior art keywords
array
aerials
beacon
radio navigation
dec
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
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1317310A publication Critical patent/GB1317310A/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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08—Systems for determining direction or position line
    • G01S1/38—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna
    • G01S1/40—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1317310 Radio navigation STANDARD TELEPHONES & CABLES Ltd 23 Dec 1971 [29 Dec 1970] 61595/70 Heading H4D In a Doppler-effect beacon equally-spaced aerials of a first rectilinear array have energy at a first radio frequency commutated to them and a second rectilinear array of equally-spaced aerials is provided substantially in alignment with the first array, the length between the end aerials of the second array is equal to the spacing between adjacent elements of the first array, energy at a second radio frequency is commutated to each of the second array aerials in succession during energization at each of the first array aerials, and the commutation of the two arrays is in opposite directions. The total number of aerials is thereby reduced as compared with a conventional beacon (e.g. 42 as against 361).
GB1317310D 1970-12-29 1970-12-29 Radio navigation beacon Expired GB1317310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6159570 1970-12-29

Publications (1)

Publication Number Publication Date
GB1317310A true GB1317310A (en) 1973-05-16

Family

ID=10487200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1317310D Expired GB1317310A (en) 1970-12-29 1970-12-29 Radio navigation beacon

Country Status (6)

Country Link
JP (1) JPS5131198B1 (en)
CA (1) CA968876A (en)
DE (1) DE2162960A1 (en)
FR (1) FR2120097B1 (en)
GB (1) GB1317310A (en)
IT (1) IT944015B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123000B (en) * 1958-07-16 1962-02-01 Standard Elektrik Lorenz Ag Arrangement for wireless determination of direction based on the Doppler effect
DE1249362B (en) * 1960-09-24
FR1396305A (en) * 1960-09-24 1965-04-23 Int Standard Electric Corp Frequency modulated radio beacon
BE636626A (en) * 1962-08-27

Also Published As

Publication number Publication date
FR2120097B1 (en) 1975-08-29
DE2162960A1 (en) 1972-07-20
IT944015B (en) 1973-04-20
JPS5131198B1 (en) 1976-09-04
CA968876A (en) 1975-06-03
FR2120097A1 (en) 1972-08-11

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Legal Events

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