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GB1130209A - Improvements to m.t.i. radars - Google Patents

Improvements to m.t.i. radars

Info

Publication number
GB1130209A
GB1130209A GB4087866A GB4087866A GB1130209A GB 1130209 A GB1130209 A GB 1130209A GB 4087866 A GB4087866 A GB 4087866A GB 4087866 A GB4087866 A GB 4087866A GB 1130209 A GB1130209 A GB 1130209A
Authority
GB
United Kingdom
Prior art keywords
frequency
output
phase
pulse
filter
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
GB4087866A
Inventor
Henri Marie Jose Dasse-Hartaut
Gerard Edouard Van Den Broek
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB4087866A priority Critical patent/GB1130209A/en
Publication of GB1130209A publication Critical patent/GB1130209A/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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/53—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar

Landscapes

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

Abstract

1,130,209. Pulse radar. INTERNATIONAL STANDARD ELECTRIC CORP. 13 Sept., 1966, No. 40878/66. Heading H4D. In a pulse Doppler radar utilizing a coherent oscillator 6 phase - locked to the carrier frequency of the output of pulse transmitter 1 at each repetition period, the outputs of mixers 7, 8 are fed to a phase detector 11, the output of mixer 8 being subjected in unit 10 to a phase shift varying linearly with time (i.e. a corresponding frequency shift F o ), and the phase detector output is fed via a range gate 12 to a filter 13 having two pass bands one of which is the frequency range F o - F m to F o - FM and the other of which is the frequency range F o + F m to F o + F M where F m and FM are the Doppler frequency shifts corresponding to the slowest and fastest targets of interest respectively. The output of filter 13 passes to a loudspeaker 15 and, via a frequency discriminator 17 centred on frequency P o , to a centre-zero meter 18. Phase shifter 10 may use multiple mixing, Fig. 3 (not shown).
GB4087866A 1966-09-13 1966-09-13 Improvements to m.t.i. radars Expired GB1130209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4087866A GB1130209A (en) 1966-09-13 1966-09-13 Improvements to m.t.i. radars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4087866A GB1130209A (en) 1966-09-13 1966-09-13 Improvements to m.t.i. radars

Publications (1)

Publication Number Publication Date
GB1130209A true GB1130209A (en) 1968-10-09

Family

ID=10417080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4087866A Expired GB1130209A (en) 1966-09-13 1966-09-13 Improvements to m.t.i. radars

Country Status (1)

Country Link
GB (1) GB1130209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109219759A (en) * 2016-07-19 2019-01-15 索尼半导体解决方案公司 Radar installations, signal processing apparatus, signal processing method and mobile object

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109219759A (en) * 2016-07-19 2019-01-15 索尼半导体解决方案公司 Radar installations, signal processing apparatus, signal processing method and mobile object
CN109219759B (en) * 2016-07-19 2023-01-31 索尼半导体解决方案公司 Radar device, signal processing device, signal processing method and moving object

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