GB961559A - Improvements in radio-detection receivers - Google Patents

Improvements in radio-detection receivers

Info

Publication number
GB961559A
GB961559A GB1740861A GB1740861A GB961559A GB 961559 A GB961559 A GB 961559A GB 1740861 A GB1740861 A GB 1740861A GB 1740861 A GB1740861 A GB 1740861A GB 961559 A GB961559 A GB 961559A
Authority
GB
United Kingdom
Prior art keywords
frequency
signals
output
elevation
outputs
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
GB1740861A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB961559A publication Critical patent/GB961559A/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G01S13/44—Monopulse radar, i.e. simultaneous lobing
    • G01S13/4445—Monopulse radar, i.e. simultaneous lobing amplitude comparisons monopulse, i.e. comparing the echo signals received by an antenna arrangement with overlapping squinted beams
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G01S13/44—Monopulse radar, i.e. simultaneous lobing

Landscapes

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

Abstract

961,559. Radar. COMPAGNIE FRANCAISE THOMSON-HOUSTON. May 12, 1961 [May 17, 1960], No. 17408/61. Heading H4D. In an auto-tracking radar system in which target signals received by an aerial array 1 are combined in a differential coupler 3 to produce these sets of signals representative of the sum # of the signals from the four aerial elements and of an elevation difference signal #S and a bearing-difference signal #G, the sum signal is multiplied separately by the two difference signals in a receiver 5 to produce respective control signals for the elevation and bearing servo-devices which control the aerial scanning mechanism. In the receiver 5 the output signals from coupler 3 on channels 6, 7 and 8 which consist of pulse modulations of the frequency F of the radar transmitter 4, are fed to directional couplers 11, 12 and 13 to which the output of an oscillator 9 of frequency f1 is also supplied and the outputs from the couplers, having a frequency F-f1, are supplied to amplifiers 14, 15 and 16 the amplifier 14 in the sum # channel 7 being provided with an AGC circuit 17 which also controls amplifiers 15 and 16. The output from amplifier 14 is then mixed with an oscillation of frequency f2 from oscillator 22 in a frequency converter 18 and either the sum or difference frequency F - f1+f2 or F - f1-f2 of the output from 18 selected by filter 19 and supplied to frequency converters 23, 23<1> in identical units 20, 21 concerned respectively, with producing elevation and bearing control signals. The frequency converters 23, 23<1> have, as a second input, the outputs of amplifiers 15 and 16 fed through respective dephasers 24, 24<1> and filters 25, 25<1> select the frequency f2 in the output of converters 23, 23<1>. This frequency, which is modulated by the target. echo pulses, is then combined in adders 26, 26<1> with the frequency f2 from oscillator 22 (fed via dephasers 27, 27<1>) and the outputs of the adders, after rectification in 28, 28<1> are fed to pulse stretchers 29, 29<1> the respective outputs of which comprise the required control signals for the elevation and bearing servo control devices.
GB1740861A 1960-05-17 1961-05-12 Improvements in radio-detection receivers Expired GB961559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR827404A FR1267204A (en) 1960-05-17 1960-05-17 Improvements to radiodetection receivers

Publications (1)

Publication Number Publication Date
GB961559A true GB961559A (en) 1964-06-24

Family

ID=8731561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1740861A Expired GB961559A (en) 1960-05-17 1961-05-12 Improvements in radio-detection receivers

Country Status (5)

Country Link
CH (1) CH400260A (en)
DE (1) DE1211696B (en)
FR (1) FR1267204A (en)
GB (1) GB961559A (en)
NL (2) NL136995C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1354852A (en) * 1962-12-07 1964-03-13 Thomson Houston Comp Francaise Improvements to radiodetection receivers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE879404C (en) * 1942-10-01 1953-06-11 Telefunken Gmbh Device for spatial direction finding
DE907314C (en) * 1942-10-01 1954-03-22 Telefunken Gmbh Device for spatial direction finding

Also Published As

Publication number Publication date
CH400260A (en) 1965-10-15
FR1267204A (en) 1961-07-21
NL136995C (en)
DE1211696B (en) 1966-03-03
NL264842A (en)

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