FR2399672A1 - Installation radar - Google Patents

Installation radar

Info

Publication number
FR2399672A1
FR2399672A1 FR7822552A FR7822552A FR2399672A1 FR 2399672 A1 FR2399672 A1 FR 2399672A1 FR 7822552 A FR7822552 A FR 7822552A FR 7822552 A FR7822552 A FR 7822552A FR 2399672 A1 FR2399672 A1 FR 2399672A1
Authority
FR
France
Prior art keywords
pulses
frequencies
period
time
emitted
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.)
Pending
Application number
FR7822552A
Other languages
English (en)
Inventor
John Arthur Glasgow
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
Publication of FR2399672A1 publication Critical patent/FR2399672A1/fr
Pending 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
    • 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
    • G01S13/30—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using more than one pulse per radar period
    • 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
    • G01S7/34—Gain of receiver varied automatically during pulse-recurrence period, e.g. anti-clutter gain control

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

L'invention se rapporte aux installations radar, et a pour but la réduction des images parasites. Un émetteur émet successivement une impulsion A de fréquence f1 au temps t1 , une impulsion B de fréquence f2 légèrement plus basse au temps t2 après une période p d'une milliseconde. Après une période P, égale à plusieurs fois la période p, une nouvelle paire d'impulsions C et D sont émises, les écarts des fréquences f 3 et f4 et dans le temps p des impulsions C et D étant les mêmes que pour la paire A, B. L'écart entre les fréquences f2 et f3 est égal à plusieurs fois l'écart entre les fréquences f1 et f2 ou f3 et 4 . Les impulsions A, B, C et D sont émises par une antenne présentant une variation de directivité et qui tourne à une vitesse telle, compte tenu de cette variation, que les quatre impulsions viennent irradier la même zone dans le plan de rotation de l'antenne. Application aux installations radar de marine.
FR7822552A 1977-08-02 1978-07-31 Installation radar Pending FR2399672A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32460/77A GB1604645A (en) 1977-08-02 1977-08-02 Radar systems

Publications (1)

Publication Number Publication Date
FR2399672A1 true FR2399672A1 (fr) 1979-03-02

Family

ID=10338938

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822552A Pending FR2399672A1 (fr) 1977-08-02 1978-07-31 Installation radar

Country Status (6)

Country Link
US (1) US4206463A (fr)
CA (1) CA1131331A (fr)
DE (1) DE2804128C2 (fr)
FR (1) FR2399672A1 (fr)
GB (1) GB1604645A (fr)
IT (1) IT7868831A0 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6771205B1 (en) * 1977-07-28 2004-08-03 Raytheon Company Shipboard point defense system and elements therefor
SE417138B (sv) * 1979-04-25 1981-02-23 Ericsson Telefon Ab L M Mti-filter ingaende i mottagaren i en foljeradar
DE2921979A1 (de) * 1979-05-30 1980-12-04 Siemens Ag Schaltungsanordnung zur automatischen flugzielerkennung
US4488154A (en) * 1980-04-25 1984-12-11 Raytheon Company Radar processor
US4495501A (en) * 1982-04-28 1985-01-22 The United States Of America As Represented By The Secretary Of The Air Force Method and means for providing frequency agile operation of MTI _radar
US5659319A (en) * 1995-12-21 1997-08-19 Cardion, Inc. Method and apparatus for operating a surface detection surveillance radar using frequency agile pulse transmissions
JP2006118924A (ja) * 2004-10-20 2006-05-11 Tdk Corp パルスレーダー装置
CN110133646B (zh) * 2019-04-19 2021-01-12 电子科技大学 基于nlcs成像的双基前视sar的多通道两脉冲杂波对消方法
FR3168021A1 (fr) * 2024-10-25 2026-05-01 Thales Procédé de fonctionnement d'un radar de détection de cible en mode de surveillance maritime et redar de détection associé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110897A (en) * 1954-01-13 1963-11-12 Philco Corp Radio echo detection system
GB1028339A (en) * 1962-01-23 1966-05-04 Ass Elect Ind Improvements relating to pulse radar equipment
US3500404A (en) * 1965-02-03 1970-03-10 North American Rockwell Radar system having improved response to small targets

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403394A (en) * 1966-07-19 1968-09-24 Gen Electric Diversity radar system
US3487406A (en) * 1968-12-23 1969-12-30 Us Navy Signal processor for diversity frequency radar
FR2071182A5 (fr) * 1969-12-19 1971-09-17 Labo Cent Telecommunicat
US3797016A (en) * 1972-08-04 1974-03-12 Westinghouse Electric Corp Digital moving target indicator radar system incorporating modulo-n components
US3971997A (en) * 1975-05-28 1976-07-27 The United States Of America As Represented By The Secretary Of The Navy Sea spike suppression technique
GB1569601A (en) * 1976-05-18 1980-06-18 Decca Ltd Pulse radar apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110897A (en) * 1954-01-13 1963-11-12 Philco Corp Radio echo detection system
GB1028339A (en) * 1962-01-23 1966-05-04 Ass Elect Ind Improvements relating to pulse radar equipment
US3500404A (en) * 1965-02-03 1970-03-10 North American Rockwell Radar system having improved response to small targets

Also Published As

Publication number Publication date
CA1131331A (fr) 1982-09-07
DE2804128A1 (de) 1979-02-08
US4206463A (en) 1980-06-03
IT7868831A0 (it) 1978-08-01
DE2804128C2 (de) 1984-03-22
GB1604645A (en) 1981-12-09

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