GB468918A - Improvements in apparatus of the radio-compass type - Google Patents

Improvements in apparatus of the radio-compass type

Info

Publication number
GB468918A
GB468918A GB31623/36A GB3162336A GB468918A GB 468918 A GB468918 A GB 468918A GB 31623/36 A GB31623/36 A GB 31623/36A GB 3162336 A GB3162336 A GB 3162336A GB 468918 A GB468918 A GB 468918A
Authority
GB
United Kingdom
Prior art keywords
aerial
produced
cathode
alternatively
produce
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
GB31623/36A
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.)
Bronzavia SA
Original Assignee
Bronzavia 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 Bronzavia SA filed Critical Bronzavia SA
Publication of GB468918A publication Critical patent/GB468918A/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
    • 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

Landscapes

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

Abstract

468,918. Directive wireless signalling. BRONZAVIA SOC. ANON. Nov. 18, 1936, No. 31623. Convention date, Nov. 18, 1935. [Class 40 (v)] The direction of an incoming signal is indicated by a cathode-ray tube in which the beam is moved synchronously with a rotating aerial and which is arranged to indicate only the maximum or minimum of the received energy and the corresponding position of the rotating aerial. In one embodiment, Fig. 1, the signals from a frame aerial 1 rotated by a motor M are combined with those from. a non-directional aerial 2 the output from the receiver AD being applied after rectification to the control electrode 4 of a cathode-ray tube 3. The electrode 4 is polarized so that an indication, which may be either a bright spot or a gap in the path traced by the beam, is produced only when the received signal passes through a maximum or minimum value. If a circular path for the beam is desired the pairs of deflecting plates 8, 9 are supplied with potentials in quadrature from a generator 10, 11 mounted on the shaft of the motor M. Alternatively a straight line trace may be produced by mounting a rotary potentiometer on the shaft to produce the deflecting potential for one of the pairs of plates 8, 9. The indication may be produced alternatively by applying the peaks of the rectified signal to the anode of the tube to produce a radial deflection of the beam. In order to produce a sharper maximum or minimum the rectified signal may be passed through an amplifier biassed back to be responsive only to an input of above a predetermined magnitude. The distance of the transmitter may be estimated by controlling the amplitude of the deflecting potentials produced by the generator 10, 11, Fig. 8, in accordance with the signal amplitude derived from an amplifierdetector 15 coupled to the non-directional aerial 15. Alternatively, the anode potential of the cathode-ray tube may be similarly controlled, the distance of the indicating mark from the centre of the trace being in each case a measure of the distance of the transmitter. Systems are also described, capable of giving directional indications of a plurality of transmitters simultaneously.
GB31623/36A 1935-11-18 1936-11-18 Improvements in apparatus of the radio-compass type Expired GB468918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE468918X 1935-11-18

Publications (1)

Publication Number Publication Date
GB468918A true GB468918A (en) 1937-07-15

Family

ID=3870132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31623/36A Expired GB468918A (en) 1935-11-18 1936-11-18 Improvements in apparatus of the radio-compass type

Country Status (3)

Country Link
BE (2) BE412347A (en)
FR (1) FR813695A (en)
GB (1) GB468918A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448016A (en) * 1944-01-26 1948-08-31 Standard Telephones Cables Ltd Instrument landing system
US2470464A (en) * 1942-08-03 1949-05-17 Sylvania Electric Prod Timing and phase control circuits
US2489279A (en) * 1944-08-04 1949-11-29 Standard Telephones Cables Ltd Direction finding system
US2509208A (en) * 1945-07-16 1950-05-30 Standard Telephones Cables Ltd Direction finder system
US2543034A (en) * 1945-08-21 1951-02-27 Standard Telephones Cables Ltd Earth inductor compass indicating system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470464A (en) * 1942-08-03 1949-05-17 Sylvania Electric Prod Timing and phase control circuits
US2448016A (en) * 1944-01-26 1948-08-31 Standard Telephones Cables Ltd Instrument landing system
US2489279A (en) * 1944-08-04 1949-11-29 Standard Telephones Cables Ltd Direction finding system
US2509208A (en) * 1945-07-16 1950-05-30 Standard Telephones Cables Ltd Direction finder system
US2543034A (en) * 1945-08-21 1951-02-27 Standard Telephones Cables Ltd Earth inductor compass indicating system

Also Published As

Publication number Publication date
BE412347A (en) 1935-12-31
FR813695A (en) 1937-06-07
BE414619R (en) 1936-04-30

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