JPS55152479A - Moving target detector - Google Patents

Moving target detector

Info

Publication number
JPS55152479A
JPS55152479A JP6067179A JP6067179A JPS55152479A JP S55152479 A JPS55152479 A JP S55152479A JP 6067179 A JP6067179 A JP 6067179A JP 6067179 A JP6067179 A JP 6067179A JP S55152479 A JPS55152479 A JP S55152479A
Authority
JP
Japan
Prior art keywords
signal
phase
moving
target
channel
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
JP6067179A
Other languages
Japanese (ja)
Inventor
Masatoshi Atobe
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6067179A priority Critical patent/JPS55152479A/en
Publication of JPS55152479A publication Critical patent/JPS55152479A/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
    • G01S13/62—Sense-of-movement determination

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 enable the detection of a moving direction as well through a simple construction, by determining the moving direction in terms of the phase difference between the I channel Doppler signal of an I signal based on the frequency of waves reflected from a target and the Q channel signal of a Q signal different in phase by pi/2 from the I signal. CONSTITUTION:An I and a Q signals of reflected wave frequency are produced by the pi/2 phase shifter of a Doppler signal generator 13 on the basis of the frequency of waves transmitted by a CW radar transmitter-receiver 11 and reflected from a target. An I and a Q channel Doppler signals based on beats are applied to a moving speed and direction calculator 19 from phase detectors 15, 16 to which a reference signal is applied. Oh the basis of the phase of the I channel Doppler signal passed through a zero crossing detector 20, a direction detector 23 constituting the calculator 19 detects the phase of the Q channel Doppler signal as information corresponding to the approaching or moving-away of the target to determine the velocity and moving direction of the target through the direction data averaging unit 26 and data processor 27 of a moving velocity and direction determining section 24 etc.
JP6067179A 1979-05-17 1979-05-17 Moving target detector Pending JPS55152479A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6067179A JPS55152479A (en) 1979-05-17 1979-05-17 Moving target detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6067179A JPS55152479A (en) 1979-05-17 1979-05-17 Moving target detector

Publications (1)

Publication Number Publication Date
JPS55152479A true JPS55152479A (en) 1980-11-27

Family

ID=13149011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6067179A Pending JPS55152479A (en) 1979-05-17 1979-05-17 Moving target detector

Country Status (1)

Country Link
JP (1) JPS55152479A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499467A (en) * 1982-04-14 1985-02-12 The United States Of America As Represented By The Secretary Of The Army Doppler radar sets with target direction sensing capability

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147195A (en) * 1975-06-11 1976-12-17 Matsushita Electric Ind Co Ltd Doppler radar
JPS52124893A (en) * 1976-04-12 1977-10-20 Matsushita Electric Ind Co Ltd Doppler radar

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147195A (en) * 1975-06-11 1976-12-17 Matsushita Electric Ind Co Ltd Doppler radar
JPS52124893A (en) * 1976-04-12 1977-10-20 Matsushita Electric Ind Co Ltd Doppler radar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499467A (en) * 1982-04-14 1985-02-12 The United States Of America As Represented By The Secretary Of The Army Doppler radar sets with target direction sensing capability

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