FR3059433B1 - Procede d'identification d'un obstacle solide dans un faisceau laser d'un systeme lidar et systeme associe - Google Patents
Procede d'identification d'un obstacle solide dans un faisceau laser d'un systeme lidar et systeme associe Download PDFInfo
- Publication number
- FR3059433B1 FR3059433B1 FR1601679A FR1601679A FR3059433B1 FR 3059433 B1 FR3059433 B1 FR 3059433B1 FR 1601679 A FR1601679 A FR 1601679A FR 1601679 A FR1601679 A FR 1601679A FR 3059433 B1 FR3059433 B1 FR 3059433B1
- Authority
- FR
- France
- Prior art keywords
- laser beam
- lidar
- identifying
- obstacle
- instant
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title abstract 2
- 239000007787 solid Substances 0.000 title 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 abstract 1
Classifications
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- 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
- G01S17/04—Systems determining the presence of a target
-
- 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
- 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
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination 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
- G01S7/4802—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
-
- 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
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
L'invention concerne un procédé d'identification d'un obstacle (O) dans le faisceau laser (F) d'un système lidar, comprenant des étapes de : - émission d'un faisceau laser (F), et - réception d'un signal lidar (S) correspondant à la réflexion du faisceau (F) sur un diffuseur présent dans le faisceau (F), Le procédé de détection comprend, en outre, des étapes de : - évaluation d'un ensemble de premiers paramètres du signal lidar, l'ensemble de premiers paramètres comportant au moins une amplitude et une durée, un premier instant étant défini pour le signal lidar (S), la durée étant définie à chaque instant comme étant le temps écoulé depuis le premier instant, - identification d'un obstacle (O) présent dans le faisceau (F) lorsque l'amplitude est supérieure à un premier seuil et la durée est supérieure à un deuxième seuil, et - diminution de la puissance du faisceau (F).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1601679A FR3059433B1 (fr) | 2016-11-28 | 2016-11-28 | Procede d'identification d'un obstacle solide dans un faisceau laser d'un systeme lidar et systeme associe |
US15/821,966 US10732279B2 (en) | 2016-11-28 | 2017-11-24 | Method for identifying a solid obstacle in a laser beam of a lidar system and related system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1601679 | 2016-11-28 | ||
FR1601679A FR3059433B1 (fr) | 2016-11-28 | 2016-11-28 | Procede d'identification d'un obstacle solide dans un faisceau laser d'un systeme lidar et systeme associe |
Publications (2)
Publication Number | Publication Date |
---|---|
FR3059433A1 FR3059433A1 (fr) | 2018-06-01 |
FR3059433B1 true FR3059433B1 (fr) | 2019-05-17 |
Family
ID=58707584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1601679A Active FR3059433B1 (fr) | 2016-11-28 | 2016-11-28 | Procede d'identification d'un obstacle solide dans un faisceau laser d'un systeme lidar et systeme associe |
Country Status (2)
Country | Link |
---|---|
US (1) | US10732279B2 (fr) |
FR (1) | FR3059433B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017206923B4 (de) * | 2017-04-25 | 2020-12-31 | Robert Bosch Gmbh | Steuerung einer gerichteten Lichtquelle |
US11556000B1 (en) | 2019-08-22 | 2023-01-17 | Red Creamery Llc | Distally-actuated scanning mirror |
CN115616533A (zh) * | 2021-07-16 | 2023-01-17 | 上海禾赛科技有限公司 | 激光雷达的探测方法、发射单元以及激光雷达 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0411097D0 (en) * | 2004-05-19 | 2004-06-23 | Qinetiq Ltd | Laser radar device and method |
US20090219961A1 (en) * | 2008-02-28 | 2009-09-03 | B.E. Meyers & Co., Inc. | Laser Systems and Methods Having Auto-Ranging and Control Capability |
US20090273770A1 (en) * | 2008-04-30 | 2009-11-05 | Honeywell International Inc. | Systems and methods for safe laser imaging, detection and ranging (lidar) operation |
CA2742687C (fr) * | 2008-11-05 | 2013-07-30 | Neptec Design Group Ltd. | Analyse de la forme d'une impulsion de retour pour la discrimination par fronts descendants d'objets dans un aerosol lidar |
US8576382B2 (en) * | 2011-03-22 | 2013-11-05 | Exelis, Inc. | Method and apparatus for controlling laser transmissions for enhanced safety |
EP2677340A1 (fr) * | 2012-06-18 | 2013-12-25 | Hexagon Technology Center GmbH | Procédé de mesure de distance utilisant une adaptation dynamique de largeur d'impulsion |
FR3000561B1 (fr) | 2012-12-28 | 2016-04-29 | Thales Sa | Procede de determination de la vitesse par rapport a l'air environnant d'un aeronef a voilure tournante |
-
2016
- 2016-11-28 FR FR1601679A patent/FR3059433B1/fr active Active
-
2017
- 2017-11-24 US US15/821,966 patent/US10732279B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10732279B2 (en) | 2020-08-04 |
FR3059433A1 (fr) | 2018-06-01 |
US20180149747A1 (en) | 2018-05-31 |
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Legal Events
Date | Code | Title | Description |
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PLFP | Fee payment |
Year of fee payment: 2 |
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PLSC | Publication of the preliminary search report |
Effective date: 20180601 |
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Year of fee payment: 4 |
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PLFP | Fee payment |
Year of fee payment: 5 |
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PLFP | Fee payment |
Year of fee payment: 6 |
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PLFP | Fee payment |
Year of fee payment: 7 |
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PLFP | Fee payment |
Year of fee payment: 8 |