FR2088601A5 - - Google Patents

Info

Publication number
FR2088601A5
FR2088601A5 FR7014004A FR7014004A FR2088601A5 FR 2088601 A5 FR2088601 A5 FR 2088601A5 FR 7014004 A FR7014004 A FR 7014004A FR 7014004 A FR7014004 A FR 7014004A FR 2088601 A5 FR2088601 A5 FR 2088601A5
Authority
FR
France
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.)
Expired
Application number
FR7014004A
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
Dassault Electronique 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 Dassault Electronique SA filed Critical Dassault Electronique SA
Priority to FR7014004A priority Critical patent/FR2088601A5/fr
Priority to LU62925D priority patent/LU62925A1/xx
Priority to CH514571A priority patent/CH530133A/fr
Priority to US132983A priority patent/US3706045A/en
Priority to NL717104929A priority patent/NL155142B/xx
Priority to SE7104838A priority patent/SE376521B/xx
Priority to DE2118350A priority patent/DE2118350C3/de
Priority to JP2446371A priority patent/JPS5332201B1/ja
Priority to BE765879A priority patent/BE765879A/fr
Priority to GB2664371*A priority patent/GB1335764A/en
Application granted granted Critical
Publication of FR2088601A5 publication Critical patent/FR2088601A5/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H03G11/04—Limiting level dependent on strength of signal; Limiting level dependent on strength of carrier on which signal is modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/344—Muting responsive to the amount of noise (noise squelch)

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Noise Elimination (AREA)
  • Amplifiers (AREA)
FR7014004A 1970-04-17 1970-04-17 Expired FR2088601A5 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR7014004A FR2088601A5 (fr) 1970-04-17 1970-04-17
LU62925D LU62925A1 (fr) 1970-04-17 1971-04-05
CH514571A CH530133A (fr) 1970-04-17 1971-04-08 Dispositif pour l'élimination du bruit dans une chaîne de transmission de signaux radio-électriques
US132983A US3706045A (en) 1970-04-17 1971-04-12 Method and a device for eliminating the noise in a transmission chain of radio-electric signals
NL717104929A NL155142B (nl) 1970-04-17 1971-04-13 Inrichting voor verbetering van de signaal-ruisverhouding bij pulsvormige signalen.
SE7104838A SE376521B (fr) 1970-04-17 1971-04-14
DE2118350A DE2118350C3 (de) 1970-04-17 1971-04-15 In einer Empfangskette für Nachrichtensignale angeordnete Rauschunterdrückungseinrichtung
JP2446371A JPS5332201B1 (fr) 1970-04-17 1971-04-16
BE765879A BE765879A (fr) 1970-04-17 1971-04-16 Procede electrique et dispositif pour l'elimination du bruit d'une reception de signaux electromagnetiques
GB2664371*A GB1335764A (en) 1970-04-17 1971-04-19 Method and apparatus for reducing noise in a transmitted signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7014004A FR2088601A5 (fr) 1970-04-17 1970-04-17

Publications (1)

Publication Number Publication Date
FR2088601A5 true FR2088601A5 (fr) 1972-01-07

Family

ID=9054173

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7014004A Expired FR2088601A5 (fr) 1970-04-17 1970-04-17

Country Status (10)

Country Link
US (1) US3706045A (fr)
JP (1) JPS5332201B1 (fr)
BE (1) BE765879A (fr)
CH (1) CH530133A (fr)
DE (1) DE2118350C3 (fr)
FR (1) FR2088601A5 (fr)
GB (1) GB1335764A (fr)
LU (1) LU62925A1 (fr)
NL (1) NL155142B (fr)
SE (1) SE376521B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410929A1 (fr) * 1977-12-02 1979-06-29 Os Bad Rozwojowy Syste Dispositif de commutation, utilisant une calculatrice numerique, avec des voies de telemesure
EP0018570A1 (fr) * 1979-04-27 1980-11-12 VEB Transformatoren- und Röntgenwerk "Hermann Matern" Dispositif de réduction de signaux perturbateurs

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889108A (en) * 1974-07-25 1975-06-10 Us Navy Adaptive low pass filter
US3961274A (en) * 1975-03-10 1976-06-01 The United States Of America As Represented By The Secretary Of The Navy Noise riding threshold
GB1578374A (en) * 1976-11-08 1980-11-05 Clarion Co Ltd Noise reduction in audio reproducing systems
JPS56147525A (en) * 1980-04-18 1981-11-16 Hitachi Ltd Reception playback system
FR2505579A1 (fr) * 1981-05-08 1982-11-12 Agence France Presse Procede pour la reconstitution par filtrage, d'un signal analogique a partir d'un signal pseudoanalogique obtenu par double conversion analogique/numerique, numerique/analogique dudit signal analogique avec traitement eventuel du signal numerique
GB2304241B (en) * 1983-08-09 1997-06-18 British Aerospace Electromagnetic interference protection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410929A1 (fr) * 1977-12-02 1979-06-29 Os Bad Rozwojowy Syste Dispositif de commutation, utilisant une calculatrice numerique, avec des voies de telemesure
EP0018570A1 (fr) * 1979-04-27 1980-11-12 VEB Transformatoren- und Röntgenwerk "Hermann Matern" Dispositif de réduction de signaux perturbateurs

Also Published As

Publication number Publication date
SE376521B (fr) 1975-05-26
GB1335764A (en) 1973-10-31
NL7104929A (fr) 1971-10-19
DE2118350A1 (de) 1971-10-28
NL155142B (nl) 1977-11-15
BE765879A (fr) 1971-10-18
DE2118350B2 (de) 1978-10-05
US3706045A (en) 1972-12-12
DE2118350C3 (de) 1979-05-10
LU62925A1 (fr) 1972-02-29
CH530133A (fr) 1972-10-31
JPS5332201B1 (fr) 1978-09-07

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Legal Events

Date Code Title Description
ST Notification of lapse