FR2451589A1 - Radar a dispositif eliminateur d'images parasites - Google Patents

Radar a dispositif eliminateur d'images parasites

Info

Publication number
FR2451589A1
FR2451589A1 FR8005672A FR8005672A FR2451589A1 FR 2451589 A1 FR2451589 A1 FR 2451589A1 FR 8005672 A FR8005672 A FR 8005672A FR 8005672 A FR8005672 A FR 8005672A FR 2451589 A1 FR2451589 A1 FR 2451589A1
Authority
FR
France
Prior art keywords
false
echoes
rayleigh
weibull
suppressor
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
FR8005672A
Other languages
English (en)
Other versions
FR2451589B1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2451589A1 publication Critical patent/FR2451589A1/fr
Application granted granted Critical
Publication of FR2451589B1 publication Critical patent/FR2451589B1/fr
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
    • G01S7/292—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

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

LA PRESENTE INVENTION CONCERNE UN RECEPTEUR DE RADAR A DISPOSITIF ELIMINATEUR D'IMAGES PARASITES COMPRENANT UN DISPOSITIF DE SUPPRESSION DE FAUX ECHOS48 QUI EST COMMUTE72, SOUS LA COMMANDE D'UN DISPOSITIF DE DISCRIMINATION71 REPONDANT SOIT AU PARAMETRE DE FORMEE DE LA DISTRIBUTION WEIBULL, SOIT A UN NIVEAU MOYEN D'UN SIGNAL DE FAUX ECHOS SUPPRIMES, DE FACON A POUVOIR FONCTIONNER SELECTIVEMENT COMME SUPPRESSEUR DE FAUX ECHOS WEIBULL ET RAYLEIGH POUR LE MEILLEUR TRAITEMENT LOGTFAC POSSIBLE AVEC UN SIMPLE CIRCUIT DE MOYENNE DE CELLULES. LE SUPPRESSEUR PEUT COMPRENDRE UN PREMIER PROCESSEUR61 COMBINE AVEC UN CALCULATEUR48 DE PARAMETREE POUR CONVERTIR LES FAUX ECHOS WEIBULL EN FAUX ECHOS RAYLEIGH, UN SECOND PROCESSEUR89 DE RYTHME, ET UN SIMPLE PROCESSEUR62 POUR LES FAUX ECHOS RAYLEIGH.
FR8005672A 1979-03-14 1980-03-13 Radar a dispositif eliminateur d'images parasites Expired FR2451589B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2968679A JPS55122173A (en) 1979-03-14 1979-03-14 Noise suppression circuit

Publications (2)

Publication Number Publication Date
FR2451589A1 true FR2451589A1 (fr) 1980-10-10
FR2451589B1 FR2451589B1 (fr) 1986-02-07

Family

ID=12282984

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8005672A Expired FR2451589B1 (fr) 1979-03-14 1980-03-13 Radar a dispositif eliminateur d'images parasites

Country Status (6)

Country Link
US (1) US4318101A (fr)
JP (1) JPS55122173A (fr)
DE (1) DE3009753C2 (fr)
FR (1) FR2451589B1 (fr)
GB (1) GB2044575B (fr)
IT (1) IT1129650B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062519A1 (fr) * 1981-04-03 1982-10-13 Nec Corporation Circuit de traitement à taux de fausses alarmes constant
CN110109067A (zh) * 2019-05-06 2019-08-09 西安思丹德信息技术有限公司 一种陆基fmcw区域监控雷达数据处理方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191052B (en) * 1981-10-28 1988-05-25 Emi Ltd Radar apparatus
FR2535066B1 (fr) * 1982-10-22 1985-09-13 Thomson Csf Dispositif de determination du seuil d'elimination d'echos fixes, notamment pour recepteurs radar
JPS6035283A (ja) * 1983-07-20 1985-02-23 Matsuo Sekine 雑音抑圧装置
US4586043A (en) * 1984-03-21 1986-04-29 The United States Of America As Represented By The Secretary Of The Air Force Distribution sensitive constant false alarm rate (CFAR) processor
JPS6120875A (ja) * 1984-07-09 1986-01-29 Nec Corp 信号検出方式
JPS6128883A (ja) * 1984-07-19 1986-02-08 Matsuo Sekine 物標信号検出装置
DE3689037D1 (de) * 1985-12-23 1993-10-21 Nec Corp Radarsystem.
US4894661A (en) * 1986-04-23 1990-01-16 Furuno Electric Company, Limited Fish school detecting method or apparatus
GB2274037B (en) * 1992-12-30 1997-07-23 Samsung Electronics Co Ltd Video signal main processor for radar system
JPH09145829A (ja) * 1995-11-28 1997-06-06 Mitsubishi Electric Corp レーダ信号処理装置
US5808579A (en) * 1996-12-20 1998-09-15 Northrop Grumman Corporation Radar system using a cell averaging constant false alarm rate device
JP4655766B2 (ja) * 2005-06-10 2011-03-23 日本電気株式会社 信号検出方法及び信号検出装置
ES2369862T3 (es) * 2006-11-02 2011-12-07 Raytheon Canada Limited Detector de blancos móviles para sistemas de radar.
CA2774377C (fr) 2012-02-02 2017-05-02 Raytheon Canada Limited Detecteur reposant sur des connaissances

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995270A (en) * 1975-06-16 1976-11-30 The United States Of America As Represented By The Secretary Of The Navy Constant false alarm rate (CFAR) circuitry for minimizing extraneous target sensitivity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995270A (en) * 1975-06-16 1976-11-30 The United States Of America As Represented By The Secretary Of The Navy Constant false alarm rate (CFAR) circuitry for minimizing extraneous target sensitivity

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
EXBK/72 *
EXBK/73 *
EXBK/78 *
EXBK/79 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062519A1 (fr) * 1981-04-03 1982-10-13 Nec Corporation Circuit de traitement à taux de fausses alarmes constant
CN110109067A (zh) * 2019-05-06 2019-08-09 西安思丹德信息技术有限公司 一种陆基fmcw区域监控雷达数据处理方法

Also Published As

Publication number Publication date
JPS55122173A (en) 1980-09-19
GB2044575B (en) 1983-05-05
IT8020564A0 (it) 1980-03-13
US4318101A (en) 1982-03-02
IT1129650B (it) 1986-06-11
FR2451589B1 (fr) 1986-02-07
DE3009753C2 (de) 1982-10-14
DE3009753A1 (de) 1980-09-18
GB2044575A (en) 1980-10-15
JPS6111380B2 (fr) 1986-04-02

Similar Documents

Publication Publication Date Title
FR2451589A1 (fr) Radar a dispositif eliminateur d'images parasites
Zimmer et al. Three-dimensional beam pattern of regular sperm whale clicks confirms bent-horn hypothesis
Mitchell et al. Quantitative backscatter measurements with a long-range side-scan sonar
CA2200463A1 (fr) Focalisation automatique sur des specimens biomedicaux
DE2426268A1 (de) Schallortungs- und anzeigeeinrichtung, insbesondere fuer die navigation von schiffen in seichtem wasser
FR2523297B1 (fr) Dispositif indicateur de faible niveau de carburant
Weinberg The 2001 Pacific west coast bottom trawl survey of groundfish resources: Estimates of distribution, abundance, and length and age composition
FR2449900A1 (fr) Dispositif de traitement de signaux radar pour ameliorer la detection visuelle de cibles a longue distance et radar en comportant application
DE102005028980A1 (de) Adaptives Ultraschall-Bildgebungssystem
FR2361667A1 (fr) Radar avec dispositif de rejection des interferences
EP0156636A2 (fr) Traitement de signaux écho
CA2051653A1 (fr) Methode et appareil d'imagerie ultrasonore a reflexion et a transmission combinees
Eckmann Allocation of echo integrator output to small larval insect (Chaoborus sp.) and medium-sized (juvenile fish) targets
FR2469837A1 (fr) Dispositif de detection de porteuse dans un modem muni d'un annuleur d'echo
US4025919A (en) Automatic target detector
FR2525774B1 (fr) Dispositif de filtrage adaptatif de signaux recus par un sonar actif pour la rejection de la reverberation
JPS5523486A (en) Display unit for detection information
FR2557306B1 (fr) Dispositif de discrimination d'echos radar
FR2441853A1 (fr) Stabilisateur de retard
JPS5572880A (en) Processor for sonar video signal
JPS56103365A (en) Ultrasonic image pickup apparatus
GB2011749A (en) Fixed echo canceller for radar systems
JPS54138336A (en) Read-in signal detection circuit for beam index type receiver
US3460059A (en) Circuit arrangement for echo sounders
Le Van et al. Photographic and acoustic techniques applied to a study of the side aspect target strength of free-swimming fish