JPS5546167A - Radar unit - Google Patents

Radar unit

Info

Publication number
JPS5546167A
JPS5546167A JP12001778A JP12001778A JPS5546167A JP S5546167 A JPS5546167 A JP S5546167A JP 12001778 A JP12001778 A JP 12001778A JP 12001778 A JP12001778 A JP 12001778A JP S5546167 A JPS5546167 A JP S5546167A
Authority
JP
Japan
Prior art keywords
frequency
interference image
trigger pulse
repetitive
transmission
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.)
Pending
Application number
JP12001778A
Other languages
Japanese (ja)
Inventor
Takeo Miyashita
Takashi Ooyama
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki 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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP12001778A priority Critical patent/JPS5546167A/en
Publication of JPS5546167A publication Critical patent/JPS5546167A/en
Pending 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
    • 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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar

Landscapes

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

Abstract

PURPOSE:To eliminate the interference image of circular type caused between the radar units equal in transmission repetitive frequency, by random generation of trigger pulse for transmission repetition. CONSTITUTION:The oscillation frequency of the crystal oscillation circuit 3 is frequency divided 4 to obtain the trigger pulse for repetitive transmission and the distance marker pulse. Further, the frequency divided output for trigger pulse produces the trigger pulse having random period by using the random time circuit 7 and the modulation oscillation circuit 8. Thus, the synchronous interference image of circular type produced between the radar units equal in the repetitive frequency is taken as asynchronous interference image and this interference image is eliminated when required.
JP12001778A 1978-09-29 1978-09-29 Radar unit Pending JPS5546167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12001778A JPS5546167A (en) 1978-09-29 1978-09-29 Radar unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12001778A JPS5546167A (en) 1978-09-29 1978-09-29 Radar unit

Publications (1)

Publication Number Publication Date
JPS5546167A true JPS5546167A (en) 1980-03-31

Family

ID=14775836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12001778A Pending JPS5546167A (en) 1978-09-29 1978-09-29 Radar unit

Country Status (1)

Country Link
JP (1) JPS5546167A (en)

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