JPS54118193A - Doppler radar device - Google Patents

Doppler radar device

Info

Publication number
JPS54118193A
JPS54118193A JP2576978A JP2576978A JPS54118193A JP S54118193 A JPS54118193 A JP S54118193A JP 2576978 A JP2576978 A JP 2576978A JP 2576978 A JP2576978 A JP 2576978A JP S54118193 A JPS54118193 A JP S54118193A
Authority
JP
Japan
Prior art keywords
terminal
microwave
frequency
deltaf
mobile object
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
JP2576978A
Other languages
Japanese (ja)
Inventor
Michio Kotani
Tetsuo Mori
Saburo Takamiya
Shigeru Mitsui
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 JP2576978A priority Critical patent/JPS54118193A/en
Publication of JPS54118193A publication Critical patent/JPS54118193A/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems

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 circuit constitution as well as to reduce the cost by using the FET featuring a high oscillation efficiency to the microwave oscillation source and also enhancing the conversion gain by making use of the nonlinearity of the FET for the Doppler radar device. CONSTITUTION:The greater part of the oscillation frequency of oscillator 13 is sent to antenna 4 from drain output terminal D to be irradiated to the mobile object. The microwave which is reflected from the mobile object and then returned to terminal D features the frequency of f0+ or -DELTAf. This microwave returns not only to terminal D but to gate input terminal G. The reflected microwave voltage sent back to terminal D is mixed with the microwave voltage occurring at terminal D via FET9, and thus the IF signal of Doppler shift frequency DELTAf can be obtained at terminal D owing to the nonlinearity of FET9. The IF signal is detected from load resistance 6 connected to terminal D, and thus the velocity of the mobile object can be detected from frequency DELTAf in the direction of the irradiation microwave.
JP2576978A 1978-03-06 1978-03-06 Doppler radar device Pending JPS54118193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2576978A JPS54118193A (en) 1978-03-06 1978-03-06 Doppler radar device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2576978A JPS54118193A (en) 1978-03-06 1978-03-06 Doppler radar device

Publications (1)

Publication Number Publication Date
JPS54118193A true JPS54118193A (en) 1979-09-13

Family

ID=12175041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2576978A Pending JPS54118193A (en) 1978-03-06 1978-03-06 Doppler radar device

Country Status (1)

Country Link
JP (1) JPS54118193A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003309A1 (en) * 1982-03-12 1983-09-29 Simpson, Ian Doppler radar area monitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003309A1 (en) * 1982-03-12 1983-09-29 Simpson, Ian Doppler radar area monitor

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