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1. (WO2019048523) IMPROVED LIDAR SYSTEM
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Pub. No.: WO/2019/048523 International Application No.: PCT/EP2018/073952
Publication Date: 14.03.2019 International Filing Date: 06.09.2018
IPC:
G01S 7/484 (2006.01) ,G01S 7/481 (2006.01) ,G01S 17/10 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
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
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
48
of systems according to group G01S17/58
483
Details of pulse systems
484
Transmitters
G PHYSICS
01
MEASURING; TESTING
S
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
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
48
of systems according to group G01S17/58
481
Constructional features, e.g. arrangements of optical elements
G PHYSICS
01
MEASURING; TESTING
S
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
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02
Systems using the reflection of electromagnetic waves other than radio waves
06
Systems determining position data of a target
08
for measuring distance only
10
using transmission of interrupted pulse-modulated waves
Applicants:
THALES [FR/FR]; TOUR CARPE DIEM Place des Corolles Esplanade Nord 92400 COURBEVOIE, FR
Inventors:
LALLIER, Eric; FR
DEMUR, Romain; FR
GRISARD, Arnaud; FR
MORVAN, Loïc; FR
Agent:
PRIORI, Enrico; FR
Priority Data:
170090207.09.2017FR
Title (EN) IMPROVED LIDAR SYSTEM
(FR) SYSTÈME LIDAR AMÉLIORÉ
Abstract:
(EN) The invention relates to a LIDAR system (10) configured to illuminate a target with an illumination pulse (lill) and to retrieve a signal pulse (Is) originating from a reflection of the illumination pulse on the target, the illumination pulses and the signal having the same signal frequency (ωs), the LIDAR system comprising: - a laser source (LS) configured to generate a transmission-detection signal (Sed) with a repetition frequency f, said transmission-detection signal comprising a first pulse (I1) intended to generate the illumination pulse and having a first frequency (ωp1), then a second pulse (I2) temporally separated from the first pulse by a separation time (Δτ) and having a second frequency (ωp2); - a first frequency conversion device (FC-up) configured to generate a converted pulse (lc) from the signal pulse (ls) and from the second pulse (l2) using a non-linear frequency summation method, the converted pulse having a converted frequency (ωc) equal to the sum of the signal frequency (ωs) and the second frequency (ωp2).
(FR) L'invention concerne un système LIDAR (10) configuré pour illuminer une cible avec une impulsion d'illumination (lIII) et pour récupérer une impulsion signal (Is) issue d'une réflexion de l'impulsion d'illumination sur la cible, les impulsions d'illumination et signal présentant une même fréquence signal (ωs), le système LIDAR comprenant : - une source laser (LS) configurée pour générer un signal d'émission- détection (Sed) avec une fréquence de répétition f, ledit signal d'émission- détection comprenant une première impulsion (I1) destinée à générer l'impulsion d'illumination et présentant une première fréquence (ωp1) puis une deuxième impulsion (12) séparée temporellement de la première impulsion d'un temps de séparation (Δτ) et présentant une deuxième fréquence (ωp2), - un premier dispositif de conversion de fréquence (FC-up) configuré pour générer une impulsion convertie (lc) à partir de l'impulsion signal (Is) et de la deuxième impulsion (I2) par un procédé non linéaire de sommation de fréquence, l'impulsion convertie présentant une fréquence convertie (ωc) égale à la somme de la fréquence signal (ωs) et de la deuxième fréquence (ωp2).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)