FR2336689A1 - Active frequency radar system - has magnetron, local oscillator and system for locking local oscillator frequency onto that of magnetron - Google Patents

Active frequency radar system - has magnetron, local oscillator and system for locking local oscillator frequency onto that of magnetron

Info

Publication number
FR2336689A1
FR2336689A1 FR7539749A FR7539749A FR2336689A1 FR 2336689 A1 FR2336689 A1 FR 2336689A1 FR 7539749 A FR7539749 A FR 7539749A FR 7539749 A FR7539749 A FR 7539749A FR 2336689 A1 FR2336689 A1 FR 2336689A1
Authority
FR
France
Prior art keywords
frequency
magnetron
local oscillator
locking
oscillator
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.)
Granted
Application number
FR7539749A
Other languages
French (fr)
Other versions
FR2336689B1 (en
Inventor
Andre Breniere
Paul Romann
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7539749A priority Critical patent/FR2336689A1/en
Publication of FR2336689A1 publication Critical patent/FR2336689A1/en
Application granted granted Critical
Publication of FR2336689B1 publication Critical patent/FR2336689B1/fr
Granted 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
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/24—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using frequency agility of carrier wave

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)

Abstract

A radar system with active frequency is described which has a magnetron, a local oscillator, and a system for locking the frequency of the local oscillator to that of the magnetron. The locking system comprises a system for pre-positioning the frequency of the oscillator first before the emission of pulses and a system for rectifying the frequency of the oscillator first after the pulse emission. The frequency pre-positioning system has an oscillator (OL1), a system which produces a frequency pre-positioning command voltage which follows the same variation with time as that followed by the frequency of the emitted pulses, and a servoloop which locks the frequency of the local oscillator (OL2) onto that of the oscillator (OL1) with a frequency shift.
FR7539749A 1975-12-24 1975-12-24 Active frequency radar system - has magnetron, local oscillator and system for locking local oscillator frequency onto that of magnetron Granted FR2336689A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7539749A FR2336689A1 (en) 1975-12-24 1975-12-24 Active frequency radar system - has magnetron, local oscillator and system for locking local oscillator frequency onto that of magnetron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7539749A FR2336689A1 (en) 1975-12-24 1975-12-24 Active frequency radar system - has magnetron, local oscillator and system for locking local oscillator frequency onto that of magnetron

Publications (2)

Publication Number Publication Date
FR2336689A1 true FR2336689A1 (en) 1977-07-22
FR2336689B1 FR2336689B1 (en) 1978-06-30

Family

ID=9164167

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7539749A Granted FR2336689A1 (en) 1975-12-24 1975-12-24 Active frequency radar system - has magnetron, local oscillator and system for locking local oscillator frequency onto that of magnetron

Country Status (1)

Country Link
FR (1) FR2336689A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933647A1 (en) * 1996-10-15 1999-08-04 Zybin, Mikhail Nikolaevich Pulse radio-localisation system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2267555A1 (en) * 1974-04-11 1975-11-07 Dassault Electronique Local radar oscillator frequency control - uses auxiliary oscillator and magnetron difference frequency

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2267555A1 (en) * 1974-04-11 1975-11-07 Dassault Electronique Local radar oscillator frequency control - uses auxiliary oscillator and magnetron difference frequency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933647A1 (en) * 1996-10-15 1999-08-04 Zybin, Mikhail Nikolaevich Pulse radio-localisation system
EP0933647A4 (en) * 1996-10-15 2000-01-26 Mikhail Nikolaevich Zybin Pulse radio-localisation system

Also Published As

Publication number Publication date
FR2336689B1 (en) 1978-06-30

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Legal Events

Date Code Title Description
ST Notification of lapse