NL8006950A - Drempelschakeling voor radarvideoinformatie. - Google Patents

Drempelschakeling voor radarvideoinformatie. Download PDF

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Publication number
NL8006950A
NL8006950A NL8006950A NL8006950A NL8006950A NL 8006950 A NL8006950 A NL 8006950A NL 8006950 A NL8006950 A NL 8006950A NL 8006950 A NL8006950 A NL 8006950A NL 8006950 A NL8006950 A NL 8006950A
Authority
NL
Netherlands
Prior art keywords
threshold
circuit
shift memory
video information
radar
Prior art date
Application number
NL8006950A
Other languages
English (en)
Dutch (nl)
Original Assignee
Hollandse Signaalapparaten Bv
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 Hollandse Signaalapparaten Bv filed Critical Hollandse Signaalapparaten Bv
Priority to NL8006950A priority Critical patent/NL8006950A/nl
Priority to EP81201188A priority patent/EP0054982B1/fr
Priority to DE8181201188T priority patent/DE3175069D1/de
Priority to CA000390289A priority patent/CA1180431A/fr
Priority to US06/324,231 priority patent/US4527159A/en
Priority to AU78230/81A priority patent/AU550112B2/en
Priority to JP56202606A priority patent/JPS57125367A/ja
Publication of NL8006950A publication Critical patent/NL8006950A/nl

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
    • G01S13/53—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 performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar
    • G01S13/532—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 performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar using a bank of range gates or a memory matrix
    • 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
    • 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
    • G01S7/2921—Extracting wanted echo-signals based on data belonging to one radar period
    • G01S7/2922—Extracting wanted echo-signals based on data belonging to one radar period by using a controlled threshold

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radar Systems Or Details Thereof (AREA)
NL8006950A 1980-12-22 1980-12-22 Drempelschakeling voor radarvideoinformatie. NL8006950A (nl)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL8006950A NL8006950A (nl) 1980-12-22 1980-12-22 Drempelschakeling voor radarvideoinformatie.
EP81201188A EP0054982B1 (fr) 1980-12-22 1981-10-27 Circuit à seuil pour données vidéo radar
DE8181201188T DE3175069D1 (en) 1980-12-22 1981-10-27 Threshold circuit for radar video data
CA000390289A CA1180431A (fr) 1980-12-22 1981-11-17 Circuit de seuil pour donnees video radar
US06/324,231 US4527159A (en) 1980-12-22 1981-11-23 Threshold circuit for radar video data
AU78230/81A AU550112B2 (en) 1980-12-22 1981-12-03 Radar threshold circuit
JP56202606A JPS57125367A (en) 1980-12-22 1981-12-17 Threshold circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8006950A NL8006950A (nl) 1980-12-22 1980-12-22 Drempelschakeling voor radarvideoinformatie.
NL8006950 1980-12-22

Publications (1)

Publication Number Publication Date
NL8006950A true NL8006950A (nl) 1982-07-16

Family

ID=19836356

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8006950A NL8006950A (nl) 1980-12-22 1980-12-22 Drempelschakeling voor radarvideoinformatie.

Country Status (7)

Country Link
US (1) US4527159A (fr)
EP (1) EP0054982B1 (fr)
JP (1) JPS57125367A (fr)
AU (1) AU550112B2 (fr)
CA (1) CA1180431A (fr)
DE (1) DE3175069D1 (fr)
NL (1) NL8006950A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660038A (en) * 1983-10-28 1987-04-21 Georgia Tech Research Institute Doppler distrometer for the measurement of hydrometer size distribution
JPS60122381A (ja) * 1983-12-06 1985-06-29 Mitsubishi Electric Corp 移動目標検出装置
IT1199171B (it) * 1984-07-27 1988-12-30 Selenia Ind Elettroniche Dispositivo per l'identificazione di echi indesiderati in sistemi radar
US4845500A (en) * 1988-03-25 1989-07-04 Sperry Marine Inc. Radar video detector and target tracker
NL8901826A (nl) * 1989-07-14 1991-02-01 Hollandse Signaalapparaten Bv Pulsradarappraat en pulsdiscriminatieschakeling geschikt voor toepassing in een pulsradarapparaat.
US5257211A (en) * 1991-05-20 1993-10-26 The United States Of America As Represented By The Secretary Of The Air Force Adjustable bandwidth concept (ABC) signal energy detector
US8193966B2 (en) * 2009-10-15 2012-06-05 The Boeing Company Wire detection systems and methods

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1527968A (fr) * 1967-04-12 1968-06-07 Electronique & Radio Ind Perfectionnements aux dispositifs éliminateurs de zones denses
US3610901A (en) * 1969-09-09 1971-10-05 Emerson Electric Co Digital modified discrete fourier transform doppler radar processor
US3701149A (en) * 1971-07-02 1972-10-24 Us Navy Frequency averaging controlled false alarm rate (cfar) circuit
US3778825A (en) * 1972-04-10 1973-12-11 Gen Electric Adaptive quantizing and integrating detector for pulse-echo systems
US4044352A (en) * 1974-12-23 1977-08-23 Hughes Aircraft Company Signal processor
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
US4213127A (en) * 1979-01-31 1980-07-15 The United States Of America As Represented By The Secretary Of The Air Force Doubly adaptive CFAR apparatus
US4266279A (en) * 1979-03-29 1981-05-05 Motorola, Inc. Memory system for a Doppler radar incorporating a fast Fourier transform computer
US4249177A (en) * 1979-05-03 1981-02-03 The United States Of America As Represented By The Secretary Of The Air Force Target discrimination apparatus
NL7908860A (nl) * 1979-12-10 1981-07-01 Hollandse Signaalapparaten Bv Drempelschakeling voor radarvideosignalen.
JPS57165774A (en) * 1981-04-03 1982-10-12 Nec Corp General purpose control device for rate of erroneously issued alarm

Also Published As

Publication number Publication date
US4527159A (en) 1985-07-02
CA1180431A (fr) 1985-01-02
AU7823081A (en) 1982-07-01
AU550112B2 (en) 1986-03-06
JPS57125367A (en) 1982-08-04
DE3175069D1 (en) 1986-09-11
EP0054982A1 (fr) 1982-06-30
JPH023472B2 (fr) 1990-01-23
EP0054982B1 (fr) 1986-08-06

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
A85 Still pending on 85-01-01
BV The patent application has lapsed