SE0004259L - Laser distance measurement system and method - Google Patents

Laser distance measurement system and method

Info

Publication number
SE0004259L
SE0004259L SE0004259A SE0004259A SE0004259L SE 0004259 L SE0004259 L SE 0004259L SE 0004259 A SE0004259 A SE 0004259A SE 0004259 A SE0004259 A SE 0004259A SE 0004259 L SE0004259 L SE 0004259L
Authority
SE
Sweden
Prior art keywords
radiation
reflected
laser
measurement system
distance measurement
Prior art date
Application number
SE0004259A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE0004259D0 (en
Inventor
Rolf Engstroem
Andreas Axelsson
Original Assignee
Saab Ab
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 Saab Ab filed Critical Saab Ab
Priority to SE0004259A priority Critical patent/SE0004259L/en
Publication of SE0004259D0 publication Critical patent/SE0004259D0/en
Priority to PCT/SE2001/002515 priority patent/WO2002042792A1/en
Priority to AU2002215279A priority patent/AU2002215279A1/en
Publication of SE0004259L publication Critical patent/SE0004259L/en

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
    • G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
    • G01C13/008—Surveying specially adapted to open water, e.g. sea, lake, river or canal measuring depth of open water
    • 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
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The present invention relates to a method and an airborne system for measuring the depth of an ocean or lake. Laser radiation emitting means (2) are arranged to emit laser radiation so that a first part of the radiation is reflected from the water surface and a second part of the radiation penetrates through the water surface and is reflected from the bottom. Receiving means (3) are arranged so as to receive said reflected radiation, and processing means (4) are arranged so as to process the received radiation parts in order to determine a time difference between the reception of the surface- and bottom-reflected radiation and, from this time difference, calculate the water depth. Means (5) are arranged so as to choose a value from among a set of at least two selectable power density or corresponding values of the laser radiation at a specified distance from the laser, and the system is adjusted for the selected value.
SE0004259A 2000-11-21 2000-11-21 Laser distance measurement system and method SE0004259L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0004259A SE0004259L (en) 2000-11-21 2000-11-21 Laser distance measurement system and method
PCT/SE2001/002515 WO2002042792A1 (en) 2000-11-21 2001-11-13 System and method for measuring water depth
AU2002215279A AU2002215279A1 (en) 2000-11-21 2001-11-13 System and method for measuring water depth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0004259A SE0004259L (en) 2000-11-21 2000-11-21 Laser distance measurement system and method

Publications (2)

Publication Number Publication Date
SE0004259D0 SE0004259D0 (en) 2000-11-21
SE0004259L true SE0004259L (en) 2002-05-22

Family

ID=20281900

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0004259A SE0004259L (en) 2000-11-21 2000-11-21 Laser distance measurement system and method

Country Status (3)

Country Link
AU (1) AU2002215279A1 (en)
SE (1) SE0004259L (en)
WO (1) WO2002042792A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPS022002A0 (en) * 2002-02-01 2002-02-21 Tenix Lads Corporation Pty Ltd An apparatus and method for the measurement of water depth using a controlled receiver
AUPS022102A0 (en) 2002-02-01 2002-02-21 Tenix Lads Corporation Pty Ltd An apparatus and method for the measurement of water depth including a scannin g assembly driven in part by a piezoelectric actuator
SE0301308L (en) * 2003-05-06 2004-05-04 Airborne Hydrography Ab Method, system and storage medium for measuring object structure
DE102007053852A1 (en) 2007-11-12 2009-05-14 Robert Bosch Gmbh Device for optical distance measurement
DE102009013735A1 (en) * 2008-03-20 2009-11-05 Cedes Ag Sensor for monitoring a surveillance area
US10684362B2 (en) 2011-06-30 2020-06-16 The Regents Of The University Of Colorado Remote measurement of shallow depths in semi-transparent media
US11231502B2 (en) 2011-06-30 2022-01-25 The Regents Of The University Of Colorado Remote measurement of shallow depths in semi-transparent media
US11933899B2 (en) 2011-06-30 2024-03-19 The Regents Of The University Of Colorado Remote measurement of shallow depths in semi-transparent media
US11313678B2 (en) 2011-06-30 2022-04-26 The Regents Of The University Of Colorado Remote measurement of shallow depths in semi-transparent media
CN109405809B (en) * 2018-10-24 2022-07-12 中国电力科学研究院有限公司 Method and system for detecting flood water depth of transformer substation
CN111637950A (en) * 2020-05-19 2020-09-08 哈尔滨工程大学 Indoor leak protection water system based on infrared range finding
CN113815555A (en) * 2021-10-13 2021-12-21 东风汽车集团股份有限公司 Automatic lifting method and system for automobile chassis based on surface water accumulation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277167A (en) * 1976-08-25 1981-07-07 The United States Of America As Represented By The Secretary Of The Navy Depth mapping system
WO1989007771A1 (en) * 1988-02-10 1989-08-24 Messerschmitt-Bölkow-Blohm Gesellschaft Mit Beschr Optical tracking instrument
US5451765A (en) * 1994-10-31 1995-09-19 Gerber; Peter Eye safety protection system for a laser transmission system wherein laser energy scattered back along the beam path is detected
US5837996A (en) * 1994-12-02 1998-11-17 Keydar; Eytan Eye protection system wherein a low power laser controls a high power laser
DE4444828A1 (en) * 1994-12-15 1996-06-20 Bayerische Motoren Werke Ag Safeguard for laser operated distance measurer in motor vehicle
SE503860C2 (en) * 1995-08-09 1996-09-23 Saab Dynamics Ab Procedure for measuring relatively small water depths, especially near sea shores or sea shores

Also Published As

Publication number Publication date
WO2002042792A1 (en) 2002-05-30
AU2002215279A1 (en) 2002-06-03
SE0004259D0 (en) 2000-11-21

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Legal Events

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