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1. WO2019054917 - TIME-OF-FLIGHT SCHEIMPFLUG LIDAR

Publication Number WO/2019/054917
Publication Date 21.03.2019
International Application No. PCT/SE2018/050908
International Filing Date 11.09.2018
IPC
G01N 21/3504 2014.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
35using infra-red light
3504for analysing gases, e.g. multi-gas analysis
G01N 21/47 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
G01S 17/10 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
08for measuring distance only
10using transmission of interrupted, pulse-modulated waves
G01S 17/95 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems, specially adapted for specific applications
95for meteorological use
CPC
G01S 17/003
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
003Bistatic lidar systems; Multistatic lidar systems
G01S 17/10
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
08for measuring distance only
10using transmission of interrupted pulse-modulated waves
G01S 17/95
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems specially adapted for specific applications
95for meteorological use
G01S 7/497
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
497Means for monitoring or calibrating
Y02A 90/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
90Technologies having an indirect contribution to adaptation to climate change
10Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Applicants
  • NEOLUND AB [SE]/[SE]
Inventors
  • XU, Can
  • BRYDEGAARD, Mikkel
Agents
  • EVENT HORIZON IP AB
Priority Data
1730251-413.09.2017SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TIME-OF-FLIGHT SCHEIMPFLUG LIDAR
(FR) LIDAR DE SCHEIMPFLUG TEMPS DE VOL
Abstract
(EN)
A system and method is provided for detecting a distance of scattering particle. Modulated light is emitted along a first axis according to an emitter signal. A lens arrangement having a lens plane is configured to direct modulated light scattered by the scattering particle on to a light sensor, the light sensor having at least one pixel column aligned to an image plane and configured to output a sensor signal. The first axis, the lens plane, and the image plane intersect such that a Scheimpflug condition is achieved. The sensor signal is processed to determine a pixel signal for one or more pixels of the light sensor by determining, from the one or more pixel signals, a particle pixel signal indicative of a particle at a point along the first axis, and therefore determining a distance of the scattering particle from the detection arrangement in dependence on at least the particle pixel signal.
(FR)
La présente invention concerne un système et un procédé de détection d'une distance de particule de diffusion. Une lumière modulée est émise le long d'un premier axe selon un signal d'émetteur. Un agencement de lentille ayant un plan de lentille est configuré pour diriger la lumière modulée diffusée par la particule de diffusion sur un capteur de lumière, le capteur de lumière ayant au moins une colonne de pixel alignée sur un plan d'image et configurée pour émettre un signal de capteur. Le premier axe, le plan de lentille et le plan d'image se croisent de telle sorte qu'une condition de Scheimpflug est obtenue. Le signal de capteur est traité pour déterminer un signal de pixel pour un ou plusieurs pixels du capteur de lumière en déterminant, à partir desdits signaux de pixel, un signal de pixel de particule indiquant une particule à un point le long du premier axe, et en déterminant ainsi une distance de la particule de diffusion par rapport à l'agencement de détection en fonction d'au moins le signal de pixel de particule.
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