FR2409521A1 - Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant - Google Patents

Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant

Info

Publication number
FR2409521A1
FR2409521A1 FR7735043A FR7735043A FR2409521A1 FR 2409521 A1 FR2409521 A1 FR 2409521A1 FR 7735043 A FR7735043 A FR 7735043A FR 7735043 A FR7735043 A FR 7735043A FR 2409521 A1 FR2409521 A1 FR 2409521A1
Authority
FR
France
Prior art keywords
radar system
elimination device
echo elimination
fixed echo
particularly associated
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
FR7735043A
Other languages
English (en)
Other versions
FR2409521B1 (fr
Inventor
Guy Lepere
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 FR7735043A priority Critical patent/FR2409521A1/fr
Priority to IT51989/78A priority patent/IT1106337B/it
Priority to DE2850508A priority patent/DE2850508C2/de
Priority to GB7845813A priority patent/GB2011749B/en
Publication of FR2409521A1 publication Critical patent/FR2409521A1/fr
Application granted granted Critical
Publication of FR2409521B1 publication Critical patent/FR2409521B1/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
    • 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
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
    • G01S7/2927—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by deriving and controlling a threshold value
    • 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
    • G01S13/5246—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 post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters
    • 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

DISPOSITIF D'ELIMINATION D'ECHOS FIXES, PLUS PARTICULIEREMENT DANS UN SYSTEME RADAR, COMPORTANT UNE VOIE NORMALE ET UNE VOIE DE CONTROLE. LA VOIE DE CONTROLE COMPREND AU MOINS UN AMPLIFICATEUR LOGARITHMIQUE ET UN CIRCUIT DE CALCUL, REALISANT LA MESURE DE L'AMPLITUDE MOYENNE DES SIGNAUX D'ECHOS SUR UNE CELLULE AZIMUT DISTANCE, PUIS SUR UN OU PLUSIEURS TOURS D'ANTENNE. CETTE DERNIERE VALEUR MOYENNE DE L'AMPLITUDE DES SIGNAUX VIDEO SERT A CONTROLER LE GAIN DE L'AMPLIFICATEUR LINEAIRE DE LA VOIE NORMALE DU DISPOSITIF. APPLICATION AUX EQUIPEMENTS RADAR.
FR7735043A 1977-11-22 1977-11-22 Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant Granted FR2409521A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7735043A FR2409521A1 (fr) 1977-11-22 1977-11-22 Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant
IT51989/78A IT1106337B (it) 1977-11-22 1978-11-21 Dispositivo di eliminazione degli echi fissi piu particolarmente associato ad un sistema radar e sistema che lo comprende
DE2850508A DE2850508C2 (de) 1977-11-22 1978-11-21 Rundsicht-Impulsradargerät
GB7845813A GB2011749B (en) 1977-11-22 1978-11-22 Fixed echo canceller for radar systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7735043A FR2409521A1 (fr) 1977-11-22 1977-11-22 Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant

Publications (2)

Publication Number Publication Date
FR2409521A1 true FR2409521A1 (fr) 1979-06-15
FR2409521B1 FR2409521B1 (fr) 1982-10-22

Family

ID=9197892

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7735043A Granted FR2409521A1 (fr) 1977-11-22 1977-11-22 Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant

Country Status (4)

Country Link
DE (1) DE2850508C2 (fr)
FR (1) FR2409521A1 (fr)
GB (1) GB2011749B (fr)
IT (1) IT1106337B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467412A1 (fr) * 1979-10-10 1981-04-17 Thomson Csf Dispositif numerique de detection de cibles par radar
EP0030750A1 (fr) * 1979-12-10 1981-06-24 Hollandse Signaalapparaten B.V. Circuit à seuil pour signaux vidéo radar

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3127065A1 (de) * 1981-07-09 1983-01-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur unterdrueckung von stoerechos bei radaranlagen und anordnung zur durchfuehrung des verfahrens
DE3209399A1 (de) * 1982-03-16 1983-09-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und anordnung zur verbesserung des signal-stoer-verhaeltnisses bei radaranlagen
DE3213430A1 (de) * 1982-04-10 1983-10-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und anordnung zur zielerkennung und stoersignalunterdrueckung in radargeraeten
DE3933437A1 (de) * 1989-10-06 1991-04-18 Diehl Gmbh & Co Rueckstrahlortungsanlage
DE102005023787A1 (de) * 2005-05-19 2006-11-23 Selex Sistemi Intergrati Gmbh Verfahren und Vorrichtung zum Korrigieren von Wetterdaten sowie Computerprogrammprodukt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786506A (en) * 1972-03-10 1974-01-15 Hughes Aircraft Co Dynamic range control system
US4058809A (en) * 1972-06-26 1977-11-15 Control Data Corporation MTI system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245452B (de) * 1965-06-02 1967-07-27 Int Standard Electric Corp Radaranlage mit Anzeigeverminderung von laengeren Festzielechos
NL174675C (nl) * 1976-09-06 1984-07-16 Hollandse Signaalapparaten Bv Inrichting voor het opwekken van de regelspanning voor de automatische sterkteregeling van een impulsradarapparaat.
FR2377640A1 (fr) * 1977-01-18 1978-08-11 Thomson Csf Dispositif de stabilisation du taux de fausses alarmes dans un radar et systeme radar comportant un tel dispositif

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786506A (en) * 1972-03-10 1974-01-15 Hughes Aircraft Co Dynamic range control system
US4058809A (en) * 1972-06-26 1977-11-15 Control Data Corporation MTI system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467412A1 (fr) * 1979-10-10 1981-04-17 Thomson Csf Dispositif numerique de detection de cibles par radar
EP0030750A1 (fr) * 1979-12-10 1981-06-24 Hollandse Signaalapparaten B.V. Circuit à seuil pour signaux vidéo radar

Also Published As

Publication number Publication date
IT1106337B (it) 1985-11-11
FR2409521B1 (fr) 1982-10-22
IT7851989A0 (it) 1978-11-21
GB2011749A (en) 1979-07-11
DE2850508C2 (de) 1985-01-03
GB2011749B (en) 1982-06-16
DE2850508A1 (de) 1979-06-13

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Legal Events

Date Code Title Description
ST Notification of lapse