JPS5566772A - Radar video signal amplifying circuit - Google Patents

Radar video signal amplifying circuit

Info

Publication number
JPS5566772A
JPS5566772A JP14032878A JP14032878A JPS5566772A JP S5566772 A JPS5566772 A JP S5566772A JP 14032878 A JP14032878 A JP 14032878A JP 14032878 A JP14032878 A JP 14032878A JP S5566772 A JPS5566772 A JP S5566772A
Authority
JP
Japan
Prior art keywords
amplifier
noise
linearity
switches
radar
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
JP14032878A
Other languages
Japanese (ja)
Other versions
JPS6243145B2 (en
Inventor
Takeshi Iketani
Shinhachiro Takebayashi
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.)
Furuno Electric Co Ltd
Original Assignee
Furuno Electric Co Ltd
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 Furuno Electric Co Ltd filed Critical Furuno Electric Co Ltd
Priority to JP14032878A priority Critical patent/JPS5566772A/en
Publication of JPS5566772A publication Critical patent/JPS5566772A/en
Publication of JPS6243145B2 publication Critical patent/JPS6243145B2/ja
Granted 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
    • G01S7/34—Gain of receiver varied automatically during pulse-recurrence period, e.g. anti-clutter gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To reduce unnecessary noise and make radar images clear by adjusting the linearity of an amplifier to one and above or one and below corresponding to the state of receiving. CONSTITUTION:If linked switches SW1 and SW2 are opened corresponding to the state of receiving, the amplification degree of a linear amplifier 2 is controlled by a resistor R1 and a series variable resistor R2, and becomes smaller than that when the switches SW1 and SW2 are closed, and the amplification degree of a linear amplifier 6 decreases. On the other hand, the linearity of an amplifier 4 becomes larger than one when its input level is on or lower than a prescribed level and becomes smaller than one when on or higher than the prescibed level. Therefore, video signals, having passed the amplifiers 2 and 4, detected by a detector 5 and amplified by the amplifier 6 are processed, corresponding to the linked operation of the switches SW1 and SW2, in the linearity range of one and below of the amplifier 4 when the noise of clatters, etc., is lower than the radar signals, and when the noise is higher than the radar signals, the peak output owing to the noise is processed in the linearity range of one and below, thus S/N is improved substantially and radar images become clear.
JP14032878A 1978-11-13 1978-11-13 Radar video signal amplifying circuit Granted JPS5566772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14032878A JPS5566772A (en) 1978-11-13 1978-11-13 Radar video signal amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14032878A JPS5566772A (en) 1978-11-13 1978-11-13 Radar video signal amplifying circuit

Publications (2)

Publication Number Publication Date
JPS5566772A true JPS5566772A (en) 1980-05-20
JPS6243145B2 JPS6243145B2 (en) 1987-09-11

Family

ID=15266256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14032878A Granted JPS5566772A (en) 1978-11-13 1978-11-13 Radar video signal amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5566772A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607258A (en) * 1983-03-10 1986-08-19 Sperry Corporation Radar video dehancer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607258A (en) * 1983-03-10 1986-08-19 Sperry Corporation Radar video dehancer

Also Published As

Publication number Publication date
JPS6243145B2 (en) 1987-09-11

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