CA2203278C - Telemetre laser - Google Patents

Telemetre laser Download PDF

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Publication number
CA2203278C
CA2203278C CA002203278A CA2203278A CA2203278C CA 2203278 C CA2203278 C CA 2203278C CA 002203278 A CA002203278 A CA 002203278A CA 2203278 A CA2203278 A CA 2203278A CA 2203278 C CA2203278 C CA 2203278C
Authority
CA
Canada
Prior art keywords
laser
signal
time
pulse
target
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.)
Expired - Lifetime
Application number
CA002203278A
Other languages
English (en)
Other versions
CA2203278A1 (fr
Inventor
Jeremy G. Dunne
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.)
Kama Tech HK Ltd
Laser Technology Inc
Original Assignee
Kama Tech HK Ltd
Laser Technology Inc
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
Priority claimed from US08/375,810 external-priority patent/US5612779A/en
Priority claimed from US08/375,945 external-priority patent/US5652651A/en
Priority claimed from US08/375,941 external-priority patent/US5574552A/en
Application filed by Kama Tech HK Ltd, Laser Technology Inc filed Critical Kama Tech HK Ltd
Publication of CA2203278A1 publication Critical patent/CA2203278A1/fr
Application granted granted Critical
Publication of CA2203278C publication Critical patent/CA2203278C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G04F10/10—Apparatus for measuring unknown time intervals by electric means by measuring electric or magnetic quantities changing in proportion to time
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G04F10/10—Apparatus for measuring unknown time intervals by electric means by measuring electric or magnetic quantities changing in proportion to time
    • G04F10/105—Apparatus for measuring unknown time intervals by electric means by measuring electric or magnetic quantities changing in proportion to time with conversion of the time-intervals
    • 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
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S17/14—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves wherein a voltage or current pulse is initiated and terminated in accordance with the pulse transmission and echo reception respectively, e.g. using counters
    • 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
    • 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
    • G01S7/497—Means for monitoring or calibrating

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Laser Surgery Devices (AREA)
  • Glass Compositions (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

Cette invention concerne un télémètre à laser comportant des modes d'acquisition d'une cible choisie pour plusieurs usagers, et de mesure avec une grande précision, le tout étant affiché dans le viseur durant le processus de visée et le fonctionnement de l'instrument. Le télémètre comprend une base de temps de précision à étalonnage automatique (24) ainsi qu'un circuit automatique de seuil de bruit (36). La base de temps de précision fait appel à un oscillateur à quartz interne d'unité centrale de traitement (30). Grâce au circuit automatique de seuil de bruit (36) et au procédé employé, un seuil de fonctionnement est établi automatiquement pour la section réceptrice de signaux d'un circuit émetteur d'impulsions laser (18). Cela permet d'obtenir à la sortie d'un détecteur (20) des impulsions de bruit émises à une cadence constante, de manière à avoir une sensibilité maximale aux signaux en retour, et afin de permettre la détection d'une impulsion laser la plus faible possible à l'aide d'un détecteur d'impulsion (24) et d'un circuit de réception laser (22). La distance est calculée par une unité centrale de traitement (28) et apparaît sur un affichage à cristaux liquides (32).
CA002203278A 1995-01-19 1995-11-29 Telemetre laser Expired - Lifetime CA2203278C (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US08/375,810 1995-01-19
US08/375,945 1995-01-19
US08/375,810 US5612779A (en) 1995-01-19 1995-01-19 Automatic noise threshold determining circuit and method for a laser range finder
US08/375,945 US5652651A (en) 1995-01-19 1995-01-19 Laser range finder having selectable target acquisition characteristics and range measuring precision
US08/375,941 1995-01-19
US08/375,941 US5574552A (en) 1995-01-19 1995-01-19 Self-calibrating precision timing circuit and method for a laser range finder
PCT/US1995/015438 WO1996022509A1 (fr) 1995-01-19 1995-11-29 Telemetre laser

Publications (2)

Publication Number Publication Date
CA2203278A1 CA2203278A1 (fr) 1996-07-25
CA2203278C true CA2203278C (fr) 2006-09-05

Family

ID=27409265

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002203278A Expired - Lifetime CA2203278C (fr) 1995-01-19 1995-11-29 Telemetre laser

Country Status (6)

Country Link
EP (1) EP0804714A4 (fr)
JP (1) JPH10512954A (fr)
KR (1) KR100278806B1 (fr)
AU (1) AU690003B2 (fr)
CA (1) CA2203278C (fr)
WO (1) WO1996022509A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5790244A (en) * 1996-08-23 1998-08-04 Laser Technology, Inc. Pre-biasing technique for a transistor based avalanche circuit in a laser based distance measurement and ranging instrument
DE10232878B4 (de) * 2002-07-19 2012-02-23 Robert Bosch Gmbh Vorrichtung und Verfahren zur Distanzmessung
WO2004015374A1 (fr) 2002-08-09 2004-02-19 Surveylab Group Limited Instrument mobile, dispositif de visionnement et procedes de traitement et de stockage de donnees
US6889175B2 (en) 2003-01-13 2005-05-03 Trimble Navigation Limited Tunable filter device for spatial positioning systems
US6903811B2 (en) 2003-08-11 2005-06-07 Kamakura Koki Co., Ltd. Rangefinder binoculars
US7236235B2 (en) 2004-07-06 2007-06-26 Dimsdale Engineering, Llc System and method for determining range in 3D imaging systems
KR100809353B1 (ko) * 2006-12-19 2008-03-05 삼성전자주식회사 무선 주파수 신호를 이용한 거리 측정 방법 및 장치
US9606228B1 (en) 2014-02-20 2017-03-28 Banner Engineering Corporation High-precision digital time-of-flight measurement with coarse delay elements
WO2016151918A1 (fr) * 2015-03-26 2016-09-29 富士フイルム株式会社 Dispositif d'acquisition d'image de distance et procédé d'acquisition d'image de distance
US9638791B2 (en) * 2015-06-25 2017-05-02 Qualcomm Incorporated Methods and apparatus for performing exposure estimation using a time-of-flight sensor
US10591598B2 (en) 2018-01-08 2020-03-17 SOS Lab co., Ltd Lidar device
WO2019135494A1 (fr) 2018-01-08 2019-07-11 주식회사 에스오에스랩 Dispositif lidar
KR102050599B1 (ko) 2018-05-14 2019-12-02 주식회사 에스오에스랩 라이다 장치
CN112764342B (zh) * 2019-11-01 2022-02-18 北京一径科技有限公司 一种时间测量装置和方法
KR102823543B1 (ko) * 2022-10-07 2025-06-20 엘아이지넥스원 주식회사 레이다 기반 모의 표적 발생 방법 및 그를 위한 장치
KR102820563B1 (ko) * 2024-11-18 2025-06-17 (주)인트세인 레이더 센서 장치
KR102834762B1 (ko) * 2024-11-27 2025-07-17 한화시스템 주식회사 전원 인가 감지가 가능한 위상 배열 레이더

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325750A (en) * 1963-12-23 1967-06-13 Gen Electric High resolution time interval measuring circuit employing a balanced crystal oscillator
DE1623564B1 (de) * 1967-12-01 1971-08-26 Siemens Ag Verfahren und Anordnung zur Entfernungsmessung mit hoher Präzision auf optischem Wege
US3644740A (en) * 1969-07-22 1972-02-22 Hughes Aircraft Co Control circuit for biasing a photodetector so as to maintain a selected false alarm rate
US3959641A (en) * 1974-12-05 1976-05-25 The United States Of America As Represented By The Secretary Of The Army Digital rangefinder correlation
US4044352A (en) * 1974-12-23 1977-08-23 Hughes Aircraft Company Signal processor
US4346989A (en) * 1976-11-18 1982-08-31 Hewlett-Packard Company Surveying instrument
FR2411418A1 (fr) * 1977-12-08 1979-07-06 Labo Cent Telecommunicat Procede et dispositif d'elimination des echos de retours multiples pour radars doppler a impulsions
CH628139A5 (de) * 1978-08-03 1982-02-15 Fruengel Frank Verfahren und einrichtung zur wolkenhoehenmessung.
DE3219423C2 (de) * 1981-06-09 1986-04-30 MTC, Meßtechnik und Optoelektronik AG, Neuenburg/Neuchâtel Entfernungsmeßverfahren und Vorrichtung zu seiner Durchführung
CH656009A5 (de) * 1981-12-17 1986-05-30 Zellweger Uster Ag Verfahren und vorrichtung zur messung der geschwindigkeit eines bewegten objekts.
DE3215847C2 (de) * 1982-04-28 1985-10-31 MTC, Meßtechnik und Optoelektronik AG, Neuenburg/Neuchâtel Zeitmeßverfahren und Vorrichtung zu seiner Durchführung
CH641308B (de) * 1982-07-13 Wild Heerbrugg Ag Vorrichtung zur laufzeitmessung von impulssignalen.
US4571085A (en) * 1983-10-11 1986-02-18 California Institute Of Technology Reflectometer based on optical cavity decay time
DE3540157A1 (de) * 1985-11-13 1987-05-21 Messerschmitt Boelkow Blohm Verfahren und vorrichtung zur entfernungsmessung
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US5157403A (en) * 1991-10-04 1992-10-20 General Electric Co. Noise correction in radars for diffuse targets

Also Published As

Publication number Publication date
AU4503896A (en) 1996-08-07
JPH10512954A (ja) 1998-12-08
AU690003B2 (en) 1998-04-09
EP0804714A1 (fr) 1997-11-05
CA2203278A1 (fr) 1996-07-25
KR100278806B1 (ko) 2001-02-01
KR970707426A (ko) 1997-12-01
WO1996022509A1 (fr) 1996-07-25
EP0804714A4 (fr) 1999-05-12

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Effective date: 20151130