JPS5621077A - Automatic radio direction finder - Google Patents

Automatic radio direction finder

Info

Publication number
JPS5621077A
JPS5621077A JP9696779A JP9696779A JPS5621077A JP S5621077 A JPS5621077 A JP S5621077A JP 9696779 A JP9696779 A JP 9696779A JP 9696779 A JP9696779 A JP 9696779A JP S5621077 A JPS5621077 A JP S5621077A
Authority
JP
Japan
Prior art keywords
receiver
output
level
transmitted
goniometer
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
JP9696779A
Other languages
Japanese (ja)
Other versions
JPS6321156B2 (en
Inventor
Keiji Mori
Manabu Goto
Sumiharu Ishii
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9696779A priority Critical patent/JPS5621077A/en
Publication of JPS5621077A publication Critical patent/JPS5621077A/en
Publication of JPS6321156B2 publication Critical patent/JPS6321156B2/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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically

Abstract

PURPOSE:To keep input to a receiver constant by intermittently operating an intermittent operation type AGC circuit when the input has become equal to or higher than a specified level with n scans among basic operation periods according to N time scans. CONSTITUTION:To output of a goniometer system 2 is transmitted to a receiver 3 and a signal processor 4. The output of the receiver 3 is transmitted to an A/D converter 5 and its output is transmitted to the signal processor 4 and a level judging circuit 6. An intermittent operation type AGC circuit 10 is composed of the level judging circuit 6, a pulse generator 8, a counter 7 and an attenuation controller 9. Receiving the output of the A/D converter 5, the level judging circuit 6 judges the output level of the goniometer 2 inputted to the receiver 3 and controls the input level of the receiver 3 transmitted from the goniometer 2 to the receiver 3 when the output level has become a certain specified value.
JP9696779A 1979-07-30 1979-07-30 Automatic radio direction finder Granted JPS5621077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9696779A JPS5621077A (en) 1979-07-30 1979-07-30 Automatic radio direction finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9696779A JPS5621077A (en) 1979-07-30 1979-07-30 Automatic radio direction finder

Publications (2)

Publication Number Publication Date
JPS5621077A true JPS5621077A (en) 1981-02-27
JPS6321156B2 JPS6321156B2 (en) 1988-05-02

Family

ID=14178994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9696779A Granted JPS5621077A (en) 1979-07-30 1979-07-30 Automatic radio direction finder

Country Status (1)

Country Link
JP (1) JPS5621077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712750A1 (en) * 1993-11-19 1995-05-24 Thomson Csf Automatic gain control device in a radio frequency reception chain.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712750A1 (en) * 1993-11-19 1995-05-24 Thomson Csf Automatic gain control device in a radio frequency reception chain.
EP0654897A1 (en) * 1993-11-19 1995-05-24 Thomson-Csf Automatic gain control device in an RF receiver

Also Published As

Publication number Publication date
JPS6321156B2 (en) 1988-05-02

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