GB1468546A - Pulsed doppler radar systems - Google Patents

Pulsed doppler radar systems

Info

Publication number
GB1468546A
GB1468546A GB3068874A GB3068874A GB1468546A GB 1468546 A GB1468546 A GB 1468546A GB 3068874 A GB3068874 A GB 3068874A GB 3068874 A GB3068874 A GB 3068874A GB 1468546 A GB1468546 A GB 1468546A
Authority
GB
United Kingdom
Prior art keywords
pulse
phase
oscillator
doppler radar
pulses
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
GB3068874A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB3068874A priority Critical patent/GB1468546A/en
Priority to FR7521342A priority patent/FR2278082A1/en
Priority to NL7508168A priority patent/NL7508168A/en
Priority to CH895875A priority patent/CH591702A5/xx
Priority to DE19752530846 priority patent/DE2530846C3/en
Priority to IT6880075A priority patent/IT1036492B/en
Publication of GB1468546A publication Critical patent/GB1468546A/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/288—Coherent receivers
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/282—Transmitters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1468546 Pulse doppler radar MARCONI CO Ltd 12-May 1975 [11 July 1974] 30688/74 Heading H4D A pulsed doppler radar uses injection phase priming of a pulsed oscillator 1 in an attempt to achieve pulse to pulse coherence. Noise phase modulation however causes the phases of successive pulses to randomly vary about a mean phase. To overcome this the phase of each pulse is detected and used to vary the triggering instant of the oscillator. The local oscillator 7 produces, via coupling 9, the injection signal for the oscillator via circulator 3. The transmitted pulse, as leaked through duplexer 4, together with any doppler shifted echoes, is changed to IF by means of the local oscillator and mixer 6, and the phase of the pulse and echoes determined by detector 11 using the frequency multiplied output of trigger generator 14 as reference, via calibration phase changer 12. A sampler 16, controlled by the trigger pulses, separates out and stores the phase of the transmitted pulse so that this can be used, via stabilizing circuit 18, for controlling the oscillator modulator via variation of the triggering pulses.
GB3068874A 1974-07-11 1974-07-11 Pulsed doppler radar systems Expired GB1468546A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB3068874A GB1468546A (en) 1974-07-11 1974-07-11 Pulsed doppler radar systems
FR7521342A FR2278082A1 (en) 1974-07-11 1975-07-08 RADAR DOPPLER ANTI-JAMMER
NL7508168A NL7508168A (en) 1974-07-11 1975-07-09 PULSING DOPPLER RADAR SYSTEM.
CH895875A CH591702A5 (en) 1974-07-11 1975-07-09
DE19752530846 DE2530846C3 (en) 1974-07-11 1975-07-10 Pulse Doppler radar system
IT6880075A IT1036492B (en) 1974-07-11 1975-07-10 IMPULSE RADAR SYSTEM WITH EFFET TO DOPPLER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3068874A GB1468546A (en) 1974-07-11 1974-07-11 Pulsed doppler radar systems

Publications (1)

Publication Number Publication Date
GB1468546A true GB1468546A (en) 1977-03-30

Family

ID=10311569

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3068874A Expired GB1468546A (en) 1974-07-11 1974-07-11 Pulsed doppler radar systems

Country Status (6)

Country Link
CH (1) CH591702A5 (en)
DE (1) DE2530846C3 (en)
FR (1) FR2278082A1 (en)
GB (1) GB1468546A (en)
IT (1) IT1036492B (en)
NL (1) NL7508168A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE440958B (en) * 1984-01-12 1985-08-26 Philips Norden Ab COHERENT RADAR
SE460805B (en) * 1988-04-14 1989-11-20 Philips Norden Ab COHERENT RADAR
DE58909393D1 (en) * 1988-06-16 1995-09-28 Siemens Ag Reception coherent radar system.
FR2681696B1 (en) * 1988-11-07 1994-01-07 Gec Marconi Ltd RADAR SYSTEM USING AN INJECTION LOCKED TRANSMITTER STAGE.

Also Published As

Publication number Publication date
FR2278082A1 (en) 1976-02-06
CH591702A5 (en) 1977-09-30
DE2530846A1 (en) 1976-03-04
NL7508168A (en) 1976-01-13
DE2530846B2 (en) 1978-04-06
IT1036492B (en) 1979-10-30
DE2530846C3 (en) 1978-11-23
FR2278082B1 (en) 1980-07-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee