FR2358087A7 - Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities - Google Patents

Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities

Info

Publication number
FR2358087A7
FR2358087A7 FR7620827A FR7620827A FR2358087A7 FR 2358087 A7 FR2358087 A7 FR 2358087A7 FR 7620827 A FR7620827 A FR 7620827A FR 7620827 A FR7620827 A FR 7620827A FR 2358087 A7 FR2358087 A7 FR 2358087A7
Authority
FR
France
Prior art keywords
function
received power
switching system
reduce propagation
irregularities
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
FR7620827A
Other languages
French (fr)
Inventor
Henri Baillot
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.)
RADIO GUIDAGE STE CIVILE FSE
Original Assignee
RADIO GUIDAGE STE CIVILE FSE
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 RADIO GUIDAGE STE CIVILE FSE filed Critical RADIO GUIDAGE STE CIVILE FSE
Priority to FR7620827A priority Critical patent/FR2358087A7/en
Application granted granted Critical
Publication of FR2358087A7 publication Critical patent/FR2358087A7/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
    • G01S3/04—Details
    • G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna

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

The direction in azimuth of a radio transmission is determined by a radiogoniometer. Interference and propagation irregularities are reduced by using a number of aerials which are switched automatically into the receiver. Two direction finding aerial systems (A, B) with vertical polarisation are each coupled to orthogonal inductors (5, 6) in the centre of which an inductor (7) is rotated continuously by a synchronous motor (8). A capacitive coupler (9) permits connection to a line (10) connected to a receiver matching unit (11) which enables connection (12) to be made to a display. The oscilloscopic display receives signals via a distribution box which operates automatically to connect antennas as a function of received power.
FR7620827A 1976-07-08 1976-07-08 Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities Expired FR2358087A7 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7620827A FR2358087A7 (en) 1976-07-08 1976-07-08 Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7620827A FR2358087A7 (en) 1976-07-08 1976-07-08 Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities

Publications (1)

Publication Number Publication Date
FR2358087A7 true FR2358087A7 (en) 1978-02-03

Family

ID=9175387

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7620827A Expired FR2358087A7 (en) 1976-07-08 1976-07-08 Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities

Country Status (1)

Country Link
FR (1) FR2358087A7 (en)

Similar Documents

Publication Publication Date Title
JPS6238355Y2 (en)
DK90282A (en) MICROWELL RECEPTION EQUIPMENT
AU5820696A (en) Method for transmitting a pilot signal, and a cellular radio system
AU1303288A (en) A low power multi-function cellular television system
WO1998034424A3 (en) Cellular communication system with multiple same frequency broadcasts in a cell
US2885542A (en) Diversity communication receiving system
GB796915A (en) Improvements in or relating to aerial systems
FR2358087A7 (en) Automatic aerial switching system for radio goniometer - is performed as function of received power to reduce propagation irregularities
Friis et al. A new broad-band microwave antenna system
GB890296A (en) Improvements in or relating to electromagnetic wave transmission systems and apparatus for use therewith
GB1171401A (en) Improvements in or relating to Automatic Tracking Radio Equipments
GB2011726A (en) Aerial Systems
JPS6467005A (en) Mobile communication base station antenna system
CN86207134U (en) Synchronous frequency retransmission unit for television set
JPS55149072A (en) Electric power distributor
JPS6449439A (en) Transmitter/receiver for space station
JPS5627673A (en) Radar system
JPS5658339A (en) Measuring system of reception electric field level in mobile communication
JPS5779710A (en) Antenna device
GB1403747A (en) Mode extracter for antenna tracking systems
JPS5547703A (en) Aperture antenna
CN202160250U (en) Satellite television signal receiving system
EP0199463A3 (en) Electrical power dividers
GB925449A (en) Improvements in diversity radar installations
JPS5698036A (en) Double polarized wave radio communication system

Legal Events

Date Code Title Description
ST Notification of lapse