JPS56164971A - Fm-cw radar device for automobile - Google Patents

Fm-cw radar device for automobile

Info

Publication number
JPS56164971A
JPS56164971A JP6919880A JP6919880A JPS56164971A JP S56164971 A JPS56164971 A JP S56164971A JP 6919880 A JP6919880 A JP 6919880A JP 6919880 A JP6919880 A JP 6919880A JP S56164971 A JPS56164971 A JP S56164971A
Authority
JP
Japan
Prior art keywords
detected
target
clutters
distance
relative 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.)
Granted
Application number
JP6919880A
Other languages
Japanese (ja)
Other versions
JPH0146836B2 (en
Inventor
Eiji Murao
Takaya Senzaki
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP6919880A priority Critical patent/JPS56164971A/en
Priority to US06/171,149 priority patent/US4348675A/en
Priority to FR8016243A priority patent/FR2461991A1/en
Priority to DE3028076A priority patent/DE3028076C2/en
Publication of JPS56164971A publication Critical patent/JPS56164971A/en
Publication of JPH0146836B2 publication Critical patent/JPH0146836B2/ja
Granted 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
    • 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
    • G01S13/345—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 using triangular modulation

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 measure the distance and relative speed up to an objective target without clutters by determining the band corresponding to the true detected output other than clutters based on the differences between the detected outputs of respective channel through a multifilter and the average value thereof and controlling a filter gate. CONSTITUTION:Reflected CW waves are detected with the respective filters 211-, detectors 221- of a multifilter 20, and the differences between the detected outputs thereof through operators 241- and the average detected output by an average value operator 23 and A/D converted and are applied to an arithmetic control device 33. The device 33 determines the detected output channel from the true target of the large differential signal and controls a filter gate 32. Then, only the CW detected output from the true target is applied to the device 33, by which the relative speed from the target, the distance by the peak frequency analysis of the detected outputs, etc. are determined, and a collision preventing alarm, etc. is generated by the operation based on the own speed, etc. Hence, the distance and relative speed to the objective target are measured accurately without the influence of clutters owing to the waves reflected from road surfaces, etc.
JP6919880A 1979-05-23 1980-05-23 Fm-cw radar device for automobile Granted JPS56164971A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6919880A JPS56164971A (en) 1980-05-23 1980-05-23 Fm-cw radar device for automobile
US06/171,149 US4348675A (en) 1979-05-23 1980-07-22 FM-CW Radar system for use in an automotive vehicle
FR8016243A FR2461991A1 (en) 1979-07-24 1980-07-23 FREQUENCY MODULATION AND FREQUENCY-MODIFIED RADAR INSTALLATION, ABOVE THE POTENTIAL SIGNALS, HAVING THE ROLE OF WARNING TO A DRIVER WHICH HE HAS TOO CLOSE TO ANOTHER VEHICLE
DE3028076A DE3028076C2 (en) 1979-07-24 1980-07-24 Radar device for a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6919880A JPS56164971A (en) 1980-05-23 1980-05-23 Fm-cw radar device for automobile

Publications (2)

Publication Number Publication Date
JPS56164971A true JPS56164971A (en) 1981-12-18
JPH0146836B2 JPH0146836B2 (en) 1989-10-11

Family

ID=13395786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6919880A Granted JPS56164971A (en) 1979-05-23 1980-05-23 Fm-cw radar device for automobile

Country Status (1)

Country Link
JP (1) JPS56164971A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629282A (en) * 1985-07-08 1987-01-17 Honda Motor Co Ltd Fm-cw radar equipment
JPS62259076A (en) * 1986-05-02 1987-11-11 Honda Motor Co Ltd Fm-cw radar device
FR2640761A1 (en) * 1988-12-20 1990-06-22 Trt Telecom Radio Electr
JPH0587914A (en) * 1991-08-07 1993-04-09 Honda Motor Co Ltd Fm radar apparatus
JPH05180931A (en) * 1992-05-08 1993-07-23 Honda Motor Co Ltd Fm radar equipment
JP2000275327A (en) * 1999-03-23 2000-10-06 Toshiba Corp Receiving apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629282A (en) * 1985-07-08 1987-01-17 Honda Motor Co Ltd Fm-cw radar equipment
JPS62259076A (en) * 1986-05-02 1987-11-11 Honda Motor Co Ltd Fm-cw radar device
FR2640761A1 (en) * 1988-12-20 1990-06-22 Trt Telecom Radio Electr
US5046010A (en) * 1988-12-20 1991-09-03 U.S. Philips Corporation Fixed-echo cancelling radio altimeter and method of operating same
JPH0587914A (en) * 1991-08-07 1993-04-09 Honda Motor Co Ltd Fm radar apparatus
JPH05180931A (en) * 1992-05-08 1993-07-23 Honda Motor Co Ltd Fm radar equipment
JP2000275327A (en) * 1999-03-23 2000-10-06 Toshiba Corp Receiving apparatus

Also Published As

Publication number Publication date
JPH0146836B2 (en) 1989-10-11

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