GB1322696A - Radio communication system - Google Patents

Radio communication system

Info

Publication number
GB1322696A
GB1322696A GB2004571A GB2004571A GB1322696A GB 1322696 A GB1322696 A GB 1322696A GB 2004571 A GB2004571 A GB 2004571A GB 2004571 A GB2004571 A GB 2004571A GB 1322696 A GB1322696 A GB 1322696A
Authority
GB
United Kingdom
Prior art keywords
auxiliary
signals
reference station
horns
aerial
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
GB2004571A
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB1322696A publication Critical patent/GB1322696A/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
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H01Q1/1257—Means for positioning using the received signal strength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Astronomy & Astrophysics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
  • Radio Relay Systems (AREA)

Abstract

1322696 Radio direction-finding COMPAGNIE GENERALE D'ELECTRICITE 19 April 1971 [21 Jan 1970] 20045/71 Heading H4D A directional aerial is pointed in a chosen direction by comparing selected attenuation ratios of control signals with the direction found by several, auxiliary, directional aerials with axes spaced around that of the directional aerial. In one embodiment the directional aerial is Cassegrainian with a horn as primary element and this horn is surrounded by four auxiliary horns to effect pointing in azimuth and elevation; a reference station transmits marker signals which are picked up by the four auxiliary horns whose outputs are switched in pairs to comparators sequentially with signals, received on a separate aerial from a further transmitter at the reference station, for providing selected attenuator settings. In a variant the comparison is performed at the reference station, signals being transmitted thereto by the four auxiliary horns. In a third embodiment the auxiliary horns are receptors and are connected via respective filters to reflectors. The invention is applied to geostationary satellites providing nationwide television coverage.
GB2004571A 1970-01-21 1971-04-19 Radio communication system Expired GB1322696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7002171A FR2074724B1 (en) 1970-01-21 1970-01-21

Publications (1)

Publication Number Publication Date
GB1322696A true GB1322696A (en) 1973-07-11

Family

ID=9049407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2004571A Expired GB1322696A (en) 1970-01-21 1971-04-19 Radio communication system

Country Status (6)

Country Link
BE (1) BE761740A (en)
DE (1) DE2102812A1 (en)
FR (1) FR2074724B1 (en)
GB (1) GB1322696A (en)
LU (1) LU62460A1 (en)
NL (1) NL7100790A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523375A1 (en) * 1982-03-10 1983-09-16 Europ Agence Spatiale REFLECTOR DISTORTION COMPENSATION DEVICE FOR MULTI-BEAM WAVES RECEIVING AND / OR TRANSMITTING ANTENNAS
JPS6089104A (en) * 1983-09-22 1985-05-20 ブリテイツシユ・エアロスペイス・パブリツク・リミテツド・カンパニー Antenna unit
DE19707590C2 (en) * 1997-02-26 2000-12-14 Bosch Gmbh Robert Method and device for adjusting the alignment of a beam characteristic of a distance sensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190911544A (en) * 1909-05-15 1910-01-06 Marconi Wireless Telegraph Co Improvements in Apparatus for Wireless Telegraphy.
FR808966A (en) * 1935-08-03 1937-02-19 Telefunken Gmbh Method of radio guidance of mobiles
DE705374C (en) * 1935-08-30 1941-04-25 Telefunken Gmbh Bearing device operating according to the flicker principle, especially for target flight
US2190039A (en) * 1937-07-29 1940-02-13 Neufeld Jacob Navigational method and apparatus
FR864388A (en) * 1939-12-02 1941-04-25 Method of determining the site at which an electromagnetic wave arrives, embodiments and application to the detection of airplanes and the like
US3060425A (en) * 1959-10-01 1962-10-23 Bell Telephone Labor Inc Remote attitude control of earth satellites
FR1278676A (en) * 1960-11-02 1961-12-15 Csf Device for stabilizing a spacecraft

Also Published As

Publication number Publication date
DE2102812A1 (en) 1971-07-29
FR2074724A1 (en) 1971-10-08
FR2074724B1 (en) 1973-10-19
NL7100790A (en) 1971-07-23
BE761740A (en) 1971-07-19
LU62460A1 (en) 1971-08-27

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed