GB989731A - Radio interference reduction system - Google Patents

Radio interference reduction system

Info

Publication number
GB989731A
GB989731A GB2315260A GB2315260A GB989731A GB 989731 A GB989731 A GB 989731A GB 2315260 A GB2315260 A GB 2315260A GB 2315260 A GB2315260 A GB 2315260A GB 989731 A GB989731 A GB 989731A
Authority
GB
United Kingdom
Prior art keywords
signals
amplifier
interference
radar
delay
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.)
Expired
Application number
GB2315260A
Inventor
Jack Gordon Mcqueen
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2315260A priority Critical patent/GB989731A/en
Priority to FR866563A priority patent/FR1293892A/en
Publication of GB989731A publication Critical patent/GB989731A/en
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

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)

Abstract

989,731. Interference suppression; pulse radar. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 7, 1961 [July 1, 1960], No. 23152/60. Headings H4D and H4L. In a system for the reduction of interference in received pulse signals in a radar system, I.F. signals from the radar receiver are supplied via a logarithmic amplifier 1, which reduces the effect of noise signals in known manner, to a tapped delay line 2, terminated by its characteristic impedance 3, each section producing a delay equal to the pulse width. If the signals contain both information and noise of varying power level the mean level of the output signal from the amplifier will fluctuate with the power level of the interference and to reduce such fluctuations the centre tapping 6 of the delay is fed to one input of a differential amplifier 11 and the remaining tappings are fed via an OR gate 9 to the other input. The OR gate 9 will pass only the greatest of the four signals from the delay line 2, and the resulting difference signal from 11 is supplied via an amplifier 18, which restores the linearity removed by the amplifier 1, to the utilization circuit.
GB2315260A 1960-07-01 1960-07-01 Radio interference reduction system Expired GB989731A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2315260A GB989731A (en) 1960-07-01 1960-07-01 Radio interference reduction system
FR866563A FR1293892A (en) 1960-07-01 1961-06-30 New radio detection receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2315260A GB989731A (en) 1960-07-01 1960-07-01 Radio interference reduction system

Publications (1)

Publication Number Publication Date
GB989731A true GB989731A (en) 1965-04-22

Family

ID=10191005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2315260A Expired GB989731A (en) 1960-07-01 1960-07-01 Radio interference reduction system

Country Status (1)

Country Link
GB (1) GB989731A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2401755A1 (en) * 1973-01-18 1974-08-15 Thomson Csf CIRCUIT FOR TRANSMISSION OF VIDEO SIGNALS RECEIVED AT THE OUTPUT OF A PULSE RADAR RECEIVER TO AN EVALUATION DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2401755A1 (en) * 1973-01-18 1974-08-15 Thomson Csf CIRCUIT FOR TRANSMISSION OF VIDEO SIGNALS RECEIVED AT THE OUTPUT OF A PULSE RADAR RECEIVER TO AN EVALUATION DEVICE
FR2214896A1 (en) * 1973-01-18 1974-08-19 Thomson Csf

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