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1. WO2022005651 - SYSTEMS AND METHODS FOR PULSED-WAVE LIDAR

Publication Number WO/2022/005651
Publication Date 06.01.2022
International Application No. PCT/US2021/034285
International Filing Date 26.05.2021
IPC
G01S 17/10 2020.1
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 17/931 2020.1
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
93for anti-collision purposes
931of land vehicles
G08G 1/16 2006.1
GPHYSICS
08SIGNALLING
GTRAFFIC CONTROL SYSTEMS
1Traffic control systems for road vehicles
16Anti-collision systems
Applicants
  • AURORA OPERATIONS, INC. [US]/[US]
Inventors
  • BARBER, Zeb
  • REIBEL, Randy
  • BAKER, Devlin
  • KADLEC, Emil
Agents
  • SPROW, Marcus W.
  • BELDEN, Brett P.
Priority Data
16/917,29730.06.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS AND METHODS FOR PULSED-WAVE LIDAR
(FR) SYSTÈMES ET PROCÉDÉS POUR LIDAR À ONDES PULSÉES
Abstract
(EN) In some implementations, a light detection and ranging (LIDAR) system includes a laser source configured to provide an optical signal at a first signal power, an amplifier having a plurality of gain levels, and one or more processors. The amplifier is configured to receive the optical signal and amplify the optical signal based on a gain configuration of the plurality of gain configurations The one or more processors are configured to adjust the gain configuration of the amplifier across two or more of the plurality of gain configurations to cause the amplifier to generate a pulse envelope signal at a second signal power. The second signal power is greater than the first signal power by at least an amount corresponding to an inverse of a duty cycle of the optical signal.
(FR) Dans certains modes de réalisation, un système de télédétection par laser (LIDAR) comprend une source laser configurée pour fournir un signal optique à une première puissance de signal, un amplificateur ayant une pluralité de niveaux de gain, et un ou plusieurs processeurs. L'amplificateur est configuré pour recevoir le signal optique et amplifier le signal optique sur la base d'une configuration de gain de la pluralité de configurations de gain. Le ou les processeurs sont configurés pour ajuster la configuration de gain de l'amplificateur à travers au moins deux configurations de gain de la pluralité de configurations de gain pour amener l'amplificateur à générer un signal d'enveloppe d'impulsion à une seconde puissance de signal. La seconde puissance de signal est supérieure à la première puissance de signal d'au moins une quantité correspondant à un inverse d'un rapport cyclique du signal optique.
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