GB1154501A - Improvements in or relating to Radio Direction Finders - Google Patents

Improvements in or relating to Radio Direction Finders

Info

Publication number
GB1154501A
GB1154501A GB1810662A GB1810662A GB1154501A GB 1154501 A GB1154501 A GB 1154501A GB 1810662 A GB1810662 A GB 1810662A GB 1810662 A GB1810662 A GB 1810662A GB 1154501 A GB1154501 A GB 1154501A
Authority
GB
United Kingdom
Prior art keywords
crt
spot
auxiliary oscillator
frequency
radio direction
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
GB1810662A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1154501A publication Critical patent/GB1154501A/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
    • G01S3/143—Systems for determining direction or deviation from predetermined direction by vectorial combination of signals derived from differently oriented antennae
    • 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

Landscapes

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

Abstract

1,154,501. Radio direction-finding. TELEFUNKEN PATENTVERWERTUNGS - G.m.b.H. 10 May, 1962 [10 May, 1961], No. 18106/62. Heading H4D. In a radio direction finding antenna system, a number of identical horn antennµ are mounted in a circle, with their polar diagrams directed radially outwards and overlapping. In one embodiment, the antennµ feed into a common load resistor through modulators each of which has a second input supplied from a phaseshifter energized from a common auxiliary oscillator, each second input being 45 degree phase displaced with respect to the adjacent inputs. The output from the common load is taken to a phase splitting device and next through two sampling devices, controlled from the auxiliary oscillator, to the mutually perpendicular deflection systems of a CRT display unit. The angular position of the display spot in the CRT screen is a function of the bearing of the received signal. The radial distance of the spot from the screen centre is a function of the signal field strength. In a second embodiment, both the frequency of the received signal as well as the target direction are displayed. In this case, the received signals at the load resistor control the sampling devices and the quadrature CRT deflecting voltages are of constant amplitude and are supplied by the auxiliary oscillator. When the output of the latter is amplitude modulated in accordance with the incident signal frequency, the distance of the display spot from the CRT centre is a measure of this modulation frequency.
GB1810662A 1961-05-10 1962-05-10 Improvements in or relating to Radio Direction Finders Expired GB1154501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1961T0020139 DE977793C (en) 1961-05-10 1961-05-10 Procedure for direction finding in pulsed signals

Publications (1)

Publication Number Publication Date
GB1154501A true GB1154501A (en) 1969-06-11

Family

ID=7549592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1810662A Expired GB1154501A (en) 1961-05-10 1962-05-10 Improvements in or relating to Radio Direction Finders

Country Status (3)

Country Link
DE (1) DE977793C (en)
FR (1) FR1573805A (en)
GB (1) GB1154501A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492536A1 (en) * 1980-10-20 1982-04-23 Taiyo Musen Co Ltd ANTENNA SYSTEM FOR DIRECTION INDICATOR OR RADIOGONIOMETER
EP2454603A1 (en) * 2009-07-16 2012-05-23 Satworld Holding B.V. Locating device for locating an object, and a system of a locating device and an object

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436104A1 (en) * 1984-10-02 1986-04-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Direction-finding arrangement and direction-finding method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977785C (en) * 1960-11-25 1970-03-26 Telefunken Patent Direction finder for impulsive signals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492536A1 (en) * 1980-10-20 1982-04-23 Taiyo Musen Co Ltd ANTENNA SYSTEM FOR DIRECTION INDICATOR OR RADIOGONIOMETER
EP2454603A1 (en) * 2009-07-16 2012-05-23 Satworld Holding B.V. Locating device for locating an object, and a system of a locating device and an object
EP2454603B1 (en) * 2009-07-16 2017-04-19 Prazza B.V. Locating device for locating an object, and a system of a locating device and an object

Also Published As

Publication number Publication date
FR1573805A (en) 1969-07-11
DE977793C (en) 1970-05-27

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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