JPS57206872A - Optical-pulse radar device for vehicle - Google Patents

Optical-pulse radar device for vehicle

Info

Publication number
JPS57206872A
JPS57206872A JP56091513A JP9151381A JPS57206872A JP S57206872 A JPS57206872 A JP S57206872A JP 56091513 A JP56091513 A JP 56091513A JP 9151381 A JP9151381 A JP 9151381A JP S57206872 A JPS57206872 A JP S57206872A
Authority
JP
Japan
Prior art keywords
light
reception
signal
transmission light
wavelength
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
JP56091513A
Other languages
Japanese (ja)
Inventor
Hiroshi Endo
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP56091513A priority Critical patent/JPS57206872A/en
Priority to GB08216682A priority patent/GB2101832A/en
Priority to DE19823222456 priority patent/DE3222456A1/en
Publication of JPS57206872A publication Critical patent/JPS57206872A/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
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
    • H01S5/042—Electrical excitation ; Circuits therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Optics & Photonics (AREA)
  • Signal Processing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Traffic Control Systems (AREA)

Abstract

PURPOSE: To surely obtain a light-reception signal even when back light noises are increased, by transmitting a transmission light deviated by a prescribed wavelength, by superimposing a part of the transmission light on a reception light having the wavelength thus deviated, and by finding a beat signal therefrom.
CONSTITUTION: A transmission light LT which is obtained by deviating a transmission light having a prescribed wavelength by a prescribed wavelength at every prescribed cycle is transmitted by a transmitting optical system and a reflected light reflected by a target 15 is received by a receiving optical system 16. Then, a local light obtained by taking out a part of the transmission light LT is superimposed on a reception light LR by a photocoupler 17 and the light thus superimposed is subjected to an optical heterodyne detection and is passed through a light-receiving element 18, whereby a beat signal eB is obtained. The beat signal eB is amplified and detected by an intermediate frequency amplifier 19 and a detector 20 and thereby a reception pulse signal ed is found. This signal is inputted in an information processing circuit 21 and thereby the operational processing of a distance R to the target 15, a relative velocity Vr and the direction ϕ is performed.
COPYRIGHT: (C)1982,JPO&Japio
JP56091513A 1981-06-16 1981-06-16 Optical-pulse radar device for vehicle Pending JPS57206872A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56091513A JPS57206872A (en) 1981-06-16 1981-06-16 Optical-pulse radar device for vehicle
GB08216682A GB2101832A (en) 1981-06-16 1982-06-09 A light pulse radar system
DE19823222456 DE3222456A1 (en) 1981-06-16 1982-06-15 LIGHT IMPULSE RADAR SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091513A JPS57206872A (en) 1981-06-16 1981-06-16 Optical-pulse radar device for vehicle

Publications (1)

Publication Number Publication Date
JPS57206872A true JPS57206872A (en) 1982-12-18

Family

ID=14028481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091513A Pending JPS57206872A (en) 1981-06-16 1981-06-16 Optical-pulse radar device for vehicle

Country Status (3)

Country Link
JP (1) JPS57206872A (en)
DE (1) DE3222456A1 (en)
GB (1) GB2101832A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015187891A (en) * 2007-06-18 2015-10-29 レッダーテック インコーポレイテッド Lighting system with driver assistance capabilities
US9378640B2 (en) 2011-06-17 2016-06-28 Leddartech Inc. System and method for traffic side detection and characterization
US10488492B2 (en) 2014-09-09 2019-11-26 Leddarttech Inc. Discretization of detection zone

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183956B (en) * 1985-11-25 1989-10-04 Univ Southampton Laser doppler vibrometer
EP0447914A3 (en) * 1990-03-20 1993-03-03 Chien-Yuan Chi Apparatus for measuring the distance of a target
DE102006045549B4 (en) * 2006-09-25 2018-01-25 pmdtechnologies ag Means of transport with 3D camera
DE102008012028A1 (en) * 2008-02-29 2009-09-10 Fachhochschule Trier Device for laser Doppler velocity measurement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50132890A (en) * 1974-03-26 1975-10-21
JPS5237795A (en) * 1975-08-29 1977-03-23 Mitsubishi Electric Corp Microwave equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125427A (en) 1979-03-23 1980-09-27 Kokusai Denshin Denwa Co Ltd <Kdd> Method of measuring breaking position of optical

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50132890A (en) * 1974-03-26 1975-10-21
JPS5237795A (en) * 1975-08-29 1977-03-23 Mitsubishi Electric Corp Microwave equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015187891A (en) * 2007-06-18 2015-10-29 レッダーテック インコーポレイテッド Lighting system with driver assistance capabilities
JP2017126365A (en) * 2007-06-18 2017-07-20 レッダーテック インコーポレイテッド Lighting system with driver assistance capability
US9378640B2 (en) 2011-06-17 2016-06-28 Leddartech Inc. System and method for traffic side detection and characterization
US10488492B2 (en) 2014-09-09 2019-11-26 Leddarttech Inc. Discretization of detection zone

Also Published As

Publication number Publication date
GB2101832A (en) 1983-01-19
DE3222456A1 (en) 1983-01-05

Similar Documents

Publication Publication Date Title
JPS57501690A (en)
AU3939589A (en) Distance measuring method and apparatus therefor
AU7953201A (en) Method and device for measuring distances
JPS5596475A (en) Obstacle detector for vehicle
EP0916938A3 (en) Optical measurement device
DK1067397T3 (en) Motion detector based on the Doppler principle
EP1002497A3 (en) Blood vessel imaging system
EP1030192A3 (en) Correlation based optical ranging and proximity detector
GB1516336A (en) Apparatus for measuring the distance to a point on the inner wall of a hot furnace
WO2001006473A3 (en) Laser motion detectors
FR2751755B1 (en) AUTODYNE DETECTION LASER VELOCIMETER
US4190361A (en) Optical telemetering apparatus
US4604733A (en) Apparatus for determining range and bearing
JPS57206872A (en) Optical-pulse radar device for vehicle
TR25213A (en) TARGET DETECTOR BENEFITED BY MANY RECEIVERS FOR OBTAINING SIGNAL INDICATORS.
CA2319642A1 (en) Target detection arrangement
JP2894055B2 (en) Laser radar device
GB2081545A (en) Radar apparatus
ES2091956T3 (en) IMPROVED TARGET DETECTOR THAT ELIMINATES SENSITIVITY IN A SHORT DISTANCE.
GB2200810A (en) Optical proximity detector
JPS56131443A (en) Alarm device against collision for car backing
BREY et al. FM/CW radar system[Patent]
JPS62165176A (en) Optical radar device
JPS5855776A (en) Object detector
JPS5576967A (en) Range detector