SE9003817D0 - OPTICAL METHOD TO CLASSIFY SUBSTRATE - Google Patents

OPTICAL METHOD TO CLASSIFY SUBSTRATE

Info

Publication number
SE9003817D0
SE9003817D0 SE9003817A SE9003817A SE9003817D0 SE 9003817 D0 SE9003817 D0 SE 9003817D0 SE 9003817 A SE9003817 A SE 9003817A SE 9003817 A SE9003817 A SE 9003817A SE 9003817 D0 SE9003817 D0 SE 9003817D0
Authority
SE
Sweden
Prior art keywords
drops
optical method
rain
distinguised
snow
Prior art date
Application number
SE9003817A
Other languages
Swedish (sv)
Other versions
SE9003817L (en
SE467553B (en
Inventor
Sten Loefving
Original Assignee
Sten Loefving
Vta Fa
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 Sten Loefving, Vta Fa filed Critical Sten Loefving
Priority to SE9003817A priority Critical patent/SE467553B/en
Publication of SE9003817D0 publication Critical patent/SE9003817D0/en
Priority to DE4139515A priority patent/DE4139515A1/en
Publication of SE9003817L publication Critical patent/SE9003817L/en
Publication of SE467553B publication Critical patent/SE467553B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • 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
    • G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
    • 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
    • G01S7/4802—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

An optical method for detecting and classifying precipitation involves an arrangement contg. a radiation source and detection system. The radiation coincides with a detection region. The vertical extent of the light beam is less than the diagram of the largest particle to be detected or between 0.1 and 1 mm. The horizontal extent is greater than the vertical extent. Large rain drops can be distinguised from small ones since they cause shorter pulses. Snow can be distinguised from rain since snow drops cause oonger pulses than rain drops. USE - Optical detection and classification of precipitation.
SE9003817A 1990-11-30 1990-11-30 OPTICAL METHOD TO DETECT AND CLASSIFY RETURNS BY DETECTING SPRITT RESP BACKGROUND LIGHT FROM A BRIGHT SE467553B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9003817A SE467553B (en) 1990-11-30 1990-11-30 OPTICAL METHOD TO DETECT AND CLASSIFY RETURNS BY DETECTING SPRITT RESP BACKGROUND LIGHT FROM A BRIGHT
DE4139515A DE4139515A1 (en) 1990-11-30 1991-11-29 Optical detection and classification of precipitation - using light beam with vertical dimension smaller than largest particle to be detected

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9003817A SE467553B (en) 1990-11-30 1990-11-30 OPTICAL METHOD TO DETECT AND CLASSIFY RETURNS BY DETECTING SPRITT RESP BACKGROUND LIGHT FROM A BRIGHT

Publications (3)

Publication Number Publication Date
SE9003817D0 true SE9003817D0 (en) 1990-11-30
SE9003817L SE9003817L (en) 1992-05-31
SE467553B SE467553B (en) 1992-08-03

Family

ID=20381058

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9003817A SE467553B (en) 1990-11-30 1990-11-30 OPTICAL METHOD TO DETECT AND CLASSIFY RETURNS BY DETECTING SPRITT RESP BACKGROUND LIGHT FROM A BRIGHT

Country Status (2)

Country Link
DE (1) DE4139515A1 (en)
SE (1) SE467553B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6822563B2 (en) 1997-09-22 2004-11-23 Donnelly Corporation Vehicle imaging system with accessory control
US5670935A (en) 1993-02-26 1997-09-23 Donnelly Corporation Rearview vision system for vehicle including panoramic view
US5796094A (en) 1993-02-26 1998-08-18 Donnelly Corporation Vehicle headlight control using imaging sensor
WO1994027262A1 (en) * 1993-05-07 1994-11-24 Hegyi Dennis J Multi-fonction light sensor for vehicle
US6084519A (en) * 1993-05-07 2000-07-04 Control Devices, Inc. Multi-function light sensor for vehicle
US6118383A (en) * 1993-05-07 2000-09-12 Hegyi; Dennis J. Multi-function light sensor for vehicle
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
DE19615246A1 (en) * 1996-04-18 1997-10-23 Krupp Foerdertechnik Gmbh Photogrammetry method for three-dimensional tracking of moving objects
US6313454B1 (en) 1999-07-02 2001-11-06 Donnelly Corporation Rain sensor
WO1999023828A1 (en) 1997-10-30 1999-05-14 Donnelly Corporation Rain sensor with fog discrimination
DE10392601B4 (en) * 2002-08-09 2023-01-19 Conti Temic Microelectronic Gmbh Vehicle with a 3D distance imaging camera and method for its operation
US7720580B2 (en) 2004-12-23 2010-05-18 Donnelly Corporation Object detection system for vehicle
US7972045B2 (en) 2006-08-11 2011-07-05 Donnelly Corporation Automatic headlamp control system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
WO2009036176A1 (en) 2007-09-11 2009-03-19 Magna Electronics Imaging system for vehicle
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US20100020170A1 (en) 2008-07-24 2010-01-28 Higgins-Luthman Michael J Vehicle Imaging System

Also Published As

Publication number Publication date
DE4139515A1 (en) 1992-06-04
SE9003817L (en) 1992-05-31
SE467553B (en) 1992-08-03

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