IT1077181B - Ricevitore per un sistema ad alta frequenza,per la rivelazione di intrusioni - Google Patents

Ricevitore per un sistema ad alta frequenza,per la rivelazione di intrusioni

Info

Publication number
IT1077181B
IT1077181B IT23872/77A IT2387277A IT1077181B IT 1077181 B IT1077181 B IT 1077181B IT 23872/77 A IT23872/77 A IT 23872/77A IT 2387277 A IT2387277 A IT 2387277A IT 1077181 B IT1077181 B IT 1077181B
Authority
IT
Italy
Prior art keywords
intrusions
receiver
detection
high frequency
frequency system
Prior art date
Application number
IT23872/77A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT1077181B publication Critical patent/IT1077181B/it

Links

Classifications

    • 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
    • H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
    • 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
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
    • 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)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Burglar Alarm Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Radar Systems Or Details Thereof (AREA)
IT23872/77A 1976-05-26 1977-05-23 Ricevitore per un sistema ad alta frequenza,per la rivelazione di intrusioni IT1077181B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7615985A FR2353172A1 (fr) 1976-05-26 1976-05-26 Dispositif de controle automatique de sensibilite pour detecteur d'ondes a hyperfrequence

Publications (1)

Publication Number Publication Date
IT1077181B true IT1077181B (it) 1985-05-04

Family

ID=9173686

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23872/77A IT1077181B (it) 1976-05-26 1977-05-23 Ricevitore per un sistema ad alta frequenza,per la rivelazione di intrusioni

Country Status (8)

Country Link
US (1) US4149157A (it)
JP (1) JPS5310997A (it)
CH (1) CH621639A5 (it)
DE (1) DE2723595C3 (it)
ES (1) ES459130A1 (it)
FR (1) FR2353172A1 (it)
GB (1) GB1569004A (it)
IT (1) IT1077181B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807255A (en) * 1987-08-19 1989-02-21 Idland Carsten H Alarm system responsive to intrusion induced phase unbalance
DE4301826A1 (de) * 1993-01-23 1994-07-28 Diehl Gmbh & Co Sensoreinrichtung und Verwendung derselben
RU2145441C1 (ru) * 1998-06-15 2000-02-10 Научно-исследовательский и конструкторский институт радиоэлектронной техники Способ и устройство радиоволнового обнаружения нарушителя
RU2155382C2 (ru) * 1998-06-15 2000-08-27 Научно-исследовательский и конструкторский институт радиоэлектронной техники Мобильная радиолучевая система обнаружения
JP5650255B2 (ja) 2013-01-17 2015-01-07 株式会社リブ技術研究所 電力線搬送通信装置
JP5604538B2 (ja) * 2013-01-28 2014-10-08 株式会社リブ技術研究所 電力線搬送通信の受信回路
CN116557283B (zh) * 2023-07-10 2023-09-29 深圳艾为电气技术有限公司 电动压缩机控制器的电流采样精度控制方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378834A (en) * 1966-05-10 1968-04-16 Johnson Service Co Perimeter intrusion detection system
US3731307A (en) * 1969-04-21 1973-05-01 Minnesota Mining & Mfg Electrical detecting means
US3691556A (en) * 1970-06-03 1972-09-12 Memco Electronics Ltd Detection of movement in confined spaces
JPS4927369B1 (it) * 1971-08-03 1974-07-17
US3879719A (en) * 1973-05-21 1975-04-22 Shorrock Developments Limited Flat beam intruder detection device

Also Published As

Publication number Publication date
DE2723595B2 (de) 1981-07-02
CH621639A5 (it) 1981-02-13
JPS5310997A (en) 1978-01-31
GB1569004A (en) 1980-06-11
FR2353172B1 (it) 1982-09-03
DE2723595C3 (de) 1982-03-11
FR2353172A1 (fr) 1977-12-23
ES459130A1 (es) 1978-04-16
DE2723595A1 (de) 1977-12-08
US4149157A (en) 1979-04-10

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