JPS5729968A - Direction detecting device for radio interference wave of direction finder - Google Patents

Direction detecting device for radio interference wave of direction finder

Info

Publication number
JPS5729968A
JPS5729968A JP10441280A JP10441280A JPS5729968A JP S5729968 A JPS5729968 A JP S5729968A JP 10441280 A JP10441280 A JP 10441280A JP 10441280 A JP10441280 A JP 10441280A JP S5729968 A JPS5729968 A JP S5729968A
Authority
JP
Japan
Prior art keywords
radio interference
oscillator
interference wave
output
phase
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
JP10441280A
Other languages
Japanese (ja)
Other versions
JPS5926910B2 (en
Inventor
Kenzo Mori
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.)
Taiyo Musen Co Ltd
Original Assignee
Taiyo Musen 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 Taiyo Musen Co Ltd filed Critical Taiyo Musen Co Ltd
Priority to JP10441280A priority Critical patent/JPS5926910B2/en
Publication of JPS5729968A publication Critical patent/JPS5729968A/en
Publication of JPS5926910B2 publication Critical patent/JPS5926910B2/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
    • 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
    • G01S3/58—Rotating or oscillating beam systems using continuous analysis of received signal for determining direction in the plane of rotation or oscillation or for determining deviation from a predetermined direction in such a plane
    • G01S3/60—Broad-beam systems producing in the receiver a substantially sinusoidal envelope signal of the carrier wave of the beam, the phase angle of which is dependent upon the angle between the direction of the transmitter from the receiver and a reference direction from the receiver, e.g. cardioid system

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To detect an arrival direction of a weak radio interference wave even in case there exist strong and weak radio interference waves, by detecting the beatfrequency signal when there is a radio interference wave, and detecting the phase to its rotary period. CONSTITUTION:In the same way as in case antennas 1, 2 have been rotated directly by an output period of a low frequency oscillator 5, a low frequency output which has an output frequency of the oscillator 5 and has phase corresponding to the arrival direction of a radio wave is obtained from a detector 10. In case the arrival direction of a weak radio interference wave is detected by changing over a switch 11, an output component of the oscillator 5 is removed by an LPF16, only a high pulsating component in a radio interference waveform (c) is outputted as a waveform (d) from a tuning amplifier 17, and after detection 18, a signal (e) having a component of the same frequency as the oscillator 5 is provided to a phase comparator 13, and phase of the signal (e) is indicated by an indicator 15.
JP10441280A 1980-07-31 1980-07-31 Interference wave direction detection device for direction finder Expired JPS5926910B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10441280A JPS5926910B2 (en) 1980-07-31 1980-07-31 Interference wave direction detection device for direction finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10441280A JPS5926910B2 (en) 1980-07-31 1980-07-31 Interference wave direction detection device for direction finder

Publications (2)

Publication Number Publication Date
JPS5729968A true JPS5729968A (en) 1982-02-18
JPS5926910B2 JPS5926910B2 (en) 1984-07-02

Family

ID=14379980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10441280A Expired JPS5926910B2 (en) 1980-07-31 1980-07-31 Interference wave direction detection device for direction finder

Country Status (1)

Country Link
JP (1) JPS5926910B2 (en)

Also Published As

Publication number Publication date
JPS5926910B2 (en) 1984-07-02

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