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1. WO2022161702 - LIDAR TIME-OF-FLIGHT SIGNAL PROCESSING

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Publication Number WO/2022/161702
Publication Date 04.08.2022
International Application No. PCT/EP2021/086713
International Filing Date 20.12.2021
IPC
G01S 7/4865 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
483Details of pulse systems
486Receivers
4865Time delay measurement, e.g. time-of-flight measurement, time of arrival measurement or determining the exact position of a peak
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
CPC
G01S 7/4861
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
483Details of pulse systems
486Receivers
4861Circuits for detection, sampling, integration or read-out
G01S 7/4865
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
483Details of pulse systems
486Receivers
4865Time delay measurement, e.g. time-of-flight measurement, time of arrival measurement or determining the exact position of a peak
G01S 7/487
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
483Details of pulse systems
486Receivers
487Extracting wanted echo signals ; , e.g. pulse detection
G01S 7/526
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
52of systems according to group G01S15/00
523Details of pulse systems
526Receivers
Applicants
  • OSRAM GMBH [DE]/[DE]
Inventors
  • MAIERBACHER, Gerhard
  • KOLB, Florian
  • SCHNARRENBERGER, Martin
Agents
  • SJW PATENTANWÄLTE
Priority Data
10 2021 101 790.427.01.2021DE
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) LIDAR TIME-OF-FLIGHT SIGNAL PROCESSING
(FR) TRAITEMENT DE SIGNAL DE TEMPS DE VOL LIDAR
front page image
Abstract
(EN) According to various aspects a detection system (100) may include: a detector (102, 201) configured to provide a received signal (104, 202); and a processing circuit (106, 250) configured to: provide quantized signals (108, 204) each being representative of the portions of the received signal (104, 202) in which a signal level is greater than a respective threshold level (206); provide an encoded signal (110, 208) including first and second encoded signal values (110-1, 110-2, 208-1, 208-2) representative of the portions of the received signal (104, 202) in which the signal level becomes greater or less than one of the threshold levels (206), respectively; and perform a time-to-digital conversion of the encoded signal (110, 208) to provide a digitized signal including first digitized values (112-1, 214-1) associated with the first encoded signal values (110-1, 208-1),and second digitized values (112-2, 214-2) associated with the second encoded signal values (110-2, 208-2).
(FR) Selon divers aspects, un système de détection (100) peut comprendre : un détecteur (102, 201) configuré pour fournir un signal reçu (104, 202) ; et un circuit de traitement (106, 250) configuré pour : fournir des signaux quantifiés (108, 204) chacun étant représentatif des parties du signal reçu (104, 202) dans lequel un niveau de signal est supérieur à un niveau de seuil respectif (206) ; fournir un signal codé (110, 208) comprenant des première et seconde valeurs de signal codé (110-1, 110-2, 208-1, 208-2) représentatives des parties du signal reçu (104, 202) dans lequel le niveau de signal devient supérieur ou inférieur à l'un des niveaux de seuil (206), respectivement ; et effectuer une conversion temps-numérique du signal codé (110, 208) pour fournir un signal numérisé comprenant des premières valeurs numérisées (112-1 214-1) associées aux premières valeurs de signal codé (110-1 208-1), et des secondes valeurs numérisées (1122, 214-2) associées aux secondes valeurs de signal codé (1102, 208-2).
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