JPS57128869A - Doppler signal processing circuit - Google Patents

Doppler signal processing circuit

Info

Publication number
JPS57128869A
JPS57128869A JP1529081A JP1529081A JPS57128869A JP S57128869 A JPS57128869 A JP S57128869A JP 1529081 A JP1529081 A JP 1529081A JP 1529081 A JP1529081 A JP 1529081A JP S57128869 A JPS57128869 A JP S57128869A
Authority
JP
Japan
Prior art keywords
doppler signal
variance
counter
unstable
signal
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
JP1529081A
Other languages
Japanese (ja)
Inventor
Mitsuo Saito
Hiromitsu Kato
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1529081A priority Critical patent/JPS57128869A/en
Publication of JPS57128869A publication Critical patent/JPS57128869A/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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

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 prevent the variance in the result of count due to variance in a doppler signal, by comparing shaped waveform based on a detected doppler signal with a pulse of reference width and controlling an input to a speed counter. CONSTITUTION:A transmitted electromagnetic wave and a reflected wave are mixed at a mixer 4, a doppler signal detected via an amplifier 5 is processed at a waveform shaping circuit 6 where a threshold value is set to obtain a wave shaped doppler signal. This signal is compared and discriminated with a reference pulse 2 from a reference pulse width generating circuit 9 at a comparator 10, and an unstable doppler signal in which the pulse width is below specified value is interrupted and not inputted to a counter 7. Thus, the variance in the result of counter due to the variance in the unstable doppler signal is prevented, allowing to achieve speed measurement with high accuracy.
JP1529081A 1981-02-04 1981-02-04 Doppler signal processing circuit Pending JPS57128869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1529081A JPS57128869A (en) 1981-02-04 1981-02-04 Doppler signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1529081A JPS57128869A (en) 1981-02-04 1981-02-04 Doppler signal processing circuit

Publications (1)

Publication Number Publication Date
JPS57128869A true JPS57128869A (en) 1982-08-10

Family

ID=11884705

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1529081A Pending JPS57128869A (en) 1981-02-04 1981-02-04 Doppler signal processing circuit

Country Status (1)

Country Link
JP (1) JPS57128869A (en)

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