WO1987005177A3 - Filtre de fond en temps reel a vitesse extremement elevee pour detecteurs de radiation - Google Patents

Filtre de fond en temps reel a vitesse extremement elevee pour detecteurs de radiation Download PDF

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Publication number
WO1987005177A3
WO1987005177A3 PCT/US1986/002781 US8602781W WO8705177A3 WO 1987005177 A3 WO1987005177 A3 WO 1987005177A3 US 8602781 W US8602781 W US 8602781W WO 8705177 A3 WO8705177 A3 WO 8705177A3
Authority
WO
WIPO (PCT)
Prior art keywords
stage
filter
background
circuit
responsivity
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.)
Ceased
Application number
PCT/US1986/002781
Other languages
English (en)
Other versions
WO1987005177A2 (fr
Inventor
Edward L Gussin
Richard E Burney
J Brian Murphy
Carl G Pfeiffer
Richard L Hedden
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.)
Raytheon Co
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Priority to DE8787902882T priority Critical patent/DE3772672D1/de
Publication of WO1987005177A2 publication Critical patent/WO1987005177A2/fr
Publication of WO1987005177A3 publication Critical patent/WO1987005177A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/618—Noise processing, e.g. detecting, correcting, reducing or removing noise for random or high-frequency noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Measurement Of Radiation (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

Est décrit un circuit (10) de filtre de fond à cinq étages qui est capable de répondre à des variations de radiation de fond à des vitesses qui sont d'un à deux ordres de grandeur plus rapides que les filtres antérieurs classiques. La présente invention met en oeuvre une technique de multiplexage par balayage transversal en combinaison avec des circuits de filtre illustrés dans une vue d'ensemble schématique à la figure 1. Le circuit (10) comprend un amplificateur différentiel (12), un dispositif (14) d'échantillonage et de maintien, un correcteur de sensibilité (16), un filtre récurant (18), et un filtre soustractif de fond (20). Des signaux de sortie (11) provenant d'un réseau à plan focal de détecteurs (illustré à la figure 3) sont transmis à l'amplificateur par l'intermédiaire de résistance d'entrée (12a, b) à adaptation d'impédence. Un circuit (14a) d'échantillonage et de maintient sélectionne de manière cylcique et mémorise un signal reçu en provenence du premier étage (12). Les sorties du détecteur sont alors normalisées par un étage correcteur de sensibilité (16) qui utilise un convertisseur numérique/analogique (16a) et une mémoire à accès aléatoire (16c). Un circuit logique (21) de temps mort et de comparaison de bande de seuil logé à l'intérieur de l'étage du filtre soustractif de fond (20) commande le fonctionnement de l'étage du filtre récurrent (18) afin de supprimer les signaux consécutifs à des salves de radiation détectées et d'éliminer la partie radiation de fond variant en dynamique non-souhaitée du signal présent au niveau du noeud (17b). Un signal de sortie traité présent au niveau du noeud (20i) est ensuite transmis au processeur de détection de cible (non représenté).
PCT/US1986/002781 1986-02-18 1987-01-08 Filtre de fond en temps reel a vitesse extremement elevee pour detecteurs de radiation Ceased WO1987005177A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8787902882T DE3772672D1 (de) 1986-02-18 1987-01-08 Extrem-hochgeschwindigkeits-, realzeithintergrundfilter fuer strahlungsdetektor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/830,392 US4718028A (en) 1986-02-18 1986-02-18 Extremely high speed, real-time background filter for radiation detectors
US830,392 1986-02-18

Publications (2)

Publication Number Publication Date
WO1987005177A2 WO1987005177A2 (fr) 1987-08-27
WO1987005177A3 true WO1987005177A3 (fr) 1987-12-17

Family

ID=25256906

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/002781 Ceased WO1987005177A2 (fr) 1986-02-18 1987-01-08 Filtre de fond en temps reel a vitesse extremement elevee pour detecteurs de radiation

Country Status (6)

Country Link
US (1) US4718028A (fr)
EP (1) EP0258433B1 (fr)
JP (1) JPS63502634A (fr)
DE (1) DE3772672D1 (fr)
IL (1) IL81139A (fr)
WO (1) WO1987005177A2 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4970660A (en) * 1985-07-05 1990-11-13 Motorola, Inc. Accumulated statistics constant false alarm rate method and device
US5016186A (en) * 1988-02-09 1991-05-14 Mitsubishi Jukogyo Kabushiki Kaisha Method of detecting noise disappearance and detecting device therefor
GB2307125B (en) * 1989-03-21 1998-01-07 British Aerospace Adaptive Background Compensation Circuit For Optical Imaging Equipment
US5062056A (en) * 1989-10-18 1991-10-29 Hughes Aircraft Company Apparatus and method for tracking a target
US5138322A (en) * 1991-08-20 1992-08-11 Matrix Engineering, Inc. Method and apparatus for radar measurement of ball in play
US5371542A (en) * 1992-06-23 1994-12-06 The United States Of America As Represented By The Secretary Of The Navy Dual waveband signal processing system
EP0792020B1 (fr) * 1996-02-23 2003-05-02 Carlo Gavazzi Services AG Circuit de protection contre le bruit électromagnétique
DE19632607C2 (de) * 1996-08-13 2001-07-19 Deutsch Zentr Luft & Raumfahrt Meßeinrichtung und Meßverfahren zur Bestimmung von Stöchiometrieverhältnissen bei der Verbrennung von Kohlenwasserstoffen und Verwendung der Meßeinrichtung
US5960127A (en) * 1996-10-28 1999-09-28 Davis; Michael Efficient methods of performing morphological operations
US7039370B2 (en) * 2003-10-16 2006-05-02 Flarion Technologies, Inc. Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems
WO2007053075A2 (fr) * 2005-11-04 2007-05-10 Autoliv Development Ab Systeme de vision infrarouge et procede d'amelioration d'images
GB2432071A (en) * 2005-11-04 2007-05-09 Autoliv Dev Determining pixel values for an enhanced image dependent on earlier processed pixels but independent of pixels below the pixel in question
US7929647B2 (en) * 2006-03-13 2011-04-19 Lockheed Martin Corporation Emitter pulse detection utilizing adaptive matched filter approach
KR102847503B1 (ko) * 2016-12-21 2025-08-20 에스케이하이닉스 주식회사 커패시턴스 센싱 회로
US11121302B2 (en) 2018-10-11 2021-09-14 SeeQC, Inc. System and method for superconducting multi-chip module

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2004435A (en) * 1977-09-13 1979-03-28 Secr Defence Improvements in or relating to Image Discriminators
US4298887A (en) * 1980-06-09 1981-11-03 Rockwell International Corporation Non-uniformity correction in a multielement detector array
US4399464A (en) * 1981-05-04 1983-08-16 General Dynamics, Pomona Division Signal processor for an array of CID radiation detector elements

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064511A (en) * 1976-09-24 1977-12-20 Raytheon Company Clutter subtraction system
US4453218A (en) * 1980-11-24 1984-06-05 Oximetrix, Inc. Signal filter method and apparatus
US4466067A (en) * 1981-04-03 1984-08-14 State Of Oregon Multi-detector intensity interferometer and method for processing incoherent radiation signals
US4587620A (en) * 1981-05-09 1986-05-06 Nippon Gakki Seizo Kabushiki Kaisha Noise elimination device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2004435A (en) * 1977-09-13 1979-03-28 Secr Defence Improvements in or relating to Image Discriminators
US4298887A (en) * 1980-06-09 1981-11-03 Rockwell International Corporation Non-uniformity correction in a multielement detector array
US4399464A (en) * 1981-05-04 1983-08-16 General Dynamics, Pomona Division Signal processor for an array of CID radiation detector elements

Also Published As

Publication number Publication date
WO1987005177A2 (fr) 1987-08-27
IL81139A0 (en) 1987-03-31
DE3772672D1 (de) 1991-10-10
US4718028A (en) 1988-01-05
EP0258433B1 (fr) 1991-09-04
EP0258433A1 (fr) 1988-03-09
IL81139A (en) 1991-06-10
JPH0522433B2 (fr) 1993-03-29
JPS63502634A (ja) 1988-09-29

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