JPS54161898A - Speed measurement device - Google Patents

Speed measurement device

Info

Publication number
JPS54161898A
JPS54161898A JP7133478A JP7133478A JPS54161898A JP S54161898 A JPS54161898 A JP S54161898A JP 7133478 A JP7133478 A JP 7133478A JP 7133478 A JP7133478 A JP 7133478A JP S54161898 A JPS54161898 A JP S54161898A
Authority
JP
Japan
Prior art keywords
speed
measurement
car
measured
ground speed
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
JP7133478A
Other languages
Japanese (ja)
Inventor
Hiroaki Sugihara
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 JP7133478A priority Critical patent/JPS54161898A/en
Publication of JPS54161898A publication Critical patent/JPS54161898A/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
    • G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track

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 secure measurement of the ground speed for the measured mobile object while the measurement mobile object is running in an optional speed by calculating the ground speed of the measured mobile object based on the ground speed of the measurement mobile object and the relative speed between the measurement and measured objects. CONSTITUTION:The electric wave of a fixed frequency is emitted to measured car from antenna 11 mounted on measurement car 16, and relative speed A is measured by relative speed measurement device 13 based on the drift of the frequency of the reflected wave. On the other hand, ground speed B of car 16 is measured via ground speed measurement device 17 based on the wheel revolution speed of car 16, and then ground speed C of car 16 is calculated as C=A+B via arithmetic unit 18. As a result, car 16 can measure the ground speed of car 2 while running in an optional speed, thus enabling a long-time measurement of the speed. Furthermore, the range of the measurement objects can be increased conveniently.
JP7133478A 1978-06-13 1978-06-13 Speed measurement device Pending JPS54161898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7133478A JPS54161898A (en) 1978-06-13 1978-06-13 Speed measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7133478A JPS54161898A (en) 1978-06-13 1978-06-13 Speed measurement device

Publications (1)

Publication Number Publication Date
JPS54161898A true JPS54161898A (en) 1979-12-21

Family

ID=13457515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7133478A Pending JPS54161898A (en) 1978-06-13 1978-06-13 Speed measurement device

Country Status (1)

Country Link
JP (1) JPS54161898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009168624A (en) * 2008-01-16 2009-07-30 Toyota Motor Corp Object speed detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075467A (en) * 1973-11-06 1975-06-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075467A (en) * 1973-11-06 1975-06-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009168624A (en) * 2008-01-16 2009-07-30 Toyota Motor Corp Object speed detector

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