JPS56132578A - Radar system - Google Patents

Radar system

Info

Publication number
JPS56132578A
JPS56132578A JP3669280A JP3669280A JPS56132578A JP S56132578 A JPS56132578 A JP S56132578A JP 3669280 A JP3669280 A JP 3669280A JP 3669280 A JP3669280 A JP 3669280A JP S56132578 A JPS56132578 A JP S56132578A
Authority
JP
Japan
Prior art keywords
transmitting
receiving
vco
oscillator
signals
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
JP3669280A
Other languages
Japanese (ja)
Inventor
Taizo Nakamura
Yasumitsu Tani
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3669280A priority Critical patent/JPS56132578A/en
Publication of JPS56132578A publication Critical patent/JPS56132578A/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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal

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 simplify the construction employing a VCO serving both for transmission and local reception of signals by making IF to be a diffrence in the frequency oscillated between the times for transmitting and receiving it. CONSTITUTION:Signals S1 and S2 having a fixed voltage difference V1 including sinewave and triangular wave are applied to sample hold circuits 2 and 3 from an oscillator 1 where a sample holding is made at a cycle T1 of a timing signal from a control circuit 5. The output signal of the circuits 2 and 3 is introduced to a change-over circuit 4 and fed to a VCO7 as a control signal with a switching to transmitting or receiving it. With such an arrangement, the difference in the frequency oscillated by the VCO between the times for transmitting and receiving it becomes a center frequency of IFA11. This allows the VCO to be used in common for a transmitting oscillator and a receiving local oscillator.
JP3669280A 1980-03-22 1980-03-22 Radar system Pending JPS56132578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3669280A JPS56132578A (en) 1980-03-22 1980-03-22 Radar system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3669280A JPS56132578A (en) 1980-03-22 1980-03-22 Radar system

Publications (1)

Publication Number Publication Date
JPS56132578A true JPS56132578A (en) 1981-10-16

Family

ID=12476853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3669280A Pending JPS56132578A (en) 1980-03-22 1980-03-22 Radar system

Country Status (1)

Country Link
JP (1) JPS56132578A (en)

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