公开(公告)号：US20250060464A1

公开(公告)日：2025-02-20

申请号：US18898214

申请日：2024-09-26

Applicant: Aurora Operations, Inc.

Inventor： Hatem Alismail

IPC: G01S7/497 ,  G01S7/481 ,  G01S17/931

Abstract: Lidar intensity calibration from multi-beam lidar sensors uses calibration panels with known reflectance. The intensity response curves of each lidar beam are learned and modeled as a function of the known reflectivity, the transmission power level, and the range. Contrary to the lidar equation, characterization of multi-beam lidar scanners commonly used for autonomous driving applications reveals that intensity does not fall-off according to the theoretically expected inverse range-squared. Instead, a maximum intensity response is attained at a specific range (focal distance). While the focal distance varies across beams, it is independent of the transmission power. Outside of the focal distance, range intensity exhibits a sharp fall off. The intensity response curve of the lidar is well-approximated by a parametric form. Learned splines as functions of range and power level determine the most likely mapping from raw data to surface reflectance along with a measure of uncertainty.

公开(公告)号：US12228652B2

公开(公告)日：2025-02-18

申请号：US17897586

申请日：2022-08-29

Applicant: HYUNDAI MOBIS Co., Ltd.

Inventor： Pedro Isidro ,  Oleg Chernikov ,  Doychin Tsanev ,  Luka Lukic

IPC: G01S17/931 ,  B60W40/10 ,  B60W50/00 ,  G01S7/497 ,  G01S17/89

Abstract: Disclosed herein is a vehicle including a light detection and ranging (LiDAR) sensor configured to acquire a point cloud for the vehicle, a vehicle control network unit configured to control the vehicle, a motion unit configured to estimate a motion of the vehicle, a controller configured to estimate a ground plane of the LiDAR, and an automatic calibrator configured to calibrate a pose of the vehicle. The LiDAR sensor acquires time information; the vehicle control network unit processes a speed and a yaw rate of the vehicle; the motion unit calculates motion information and estimated information about the vehicle; the controller calculates ground plane information and estimated information about the vehicle; and the automatic calibrator calculates pose information and estimated information about the vehicle.

公开(公告)号：US20250052871A1

公开(公告)日：2025-02-13

申请号：US18771766

申请日：2024-07-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUUTA OOSHIMA

IPC: G01S7/4863 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/931

Abstract: A ranging device includes: a time counting unit configured to output a time count value indicating an elapsed time from a start of time counting; a light receiving unit including a plurality of pixels and configured to output a light reception count value of incident light to each of the plurality of pixels; and a pixel information generation unit configured to output pixel information in which the light reception count value and the time count value are associated with each other for each pixel. The pixel information generation unit acquires the light reception count value of each of the plurality of pixels and outputs the pixel information of each of the plurality of pixels within a period of time equal to or less than a time in which the time count value changes by a predetermined value.

公开(公告)号：US20250052866A1

公开(公告)日：2025-02-13

申请号：US18722587

申请日：2022-12-16

Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE PARIS-SACLAY

Inventor： Jean-Paul CROMIERES

IPC: G01S7/481 ,  G01S7/4861 ,  G01S17/10 ,  G01S17/931

Abstract: A lidar system based on measuring a time-of-flight, including: an emission device configured to emit light pulses towards a scene at an angle greater than or equal to 5°; a reception device including: o a photodetector configured to receive pulses reflected or backscattered by at least one element of the scene and to convert the pulses into an electrical signal, an amplification circuit configured to amplify the electrical signal, a processing unit for processing the amplified electrical signal, configured to digitize the amplified electrical signal and determine a distance from the at least one element based on the digitized amplified electrical signal, the amplification circuit including a transimpedance amplifier, a transformer including a primary and a secondary, a capacitor and an inductor arranged in series with the capacitor.

公开(公告)号：US12223734B2

公开(公告)日：2025-02-11

申请号：US17151001

申请日：2021-01-15

Applicant: Aurora Operations, Inc.

Inventor： Xuanyuan Tu ,  Raquel Urtasun ,  Tsun-Hsuan Wang ,  Sivabalan Manivasagam ,  Jingkang Wang ,  Mengye Ren

IPC: G06V20/56 ,  G01S17/931 ,  G05D1/00 ,  G06F18/21 ,  G06F18/24 ,  G06N20/00 ,  G06V10/764 ,  G06V10/82

Abstract: Systems and methods for vehicle-to-vehicle communications are provided. An adverse system can obtain sensor data representative of an environment proximate to a targeted system. The adverse system can generate an intermediate representation of the environment and a representation deviation for the intermediate representation. The representation deviation can be designed to disrupt a machine-learned model associated with the target system. The adverse system can communicate the intermediate representation modified by the representation deviation to the target system. The target system can train the machine-learned model associated with the target system to detect the modified intermediate representation. Detected modified intermediate representations can be discarded before disrupting the machine-learned model.

公开(公告)号：US12222451B2

公开(公告)日：2025-02-11

申请号：US18184260

申请日：2023-03-15

Applicant: Aurora Operations, Inc.

Inventor： Sen Lin ,  Lei Wang

IPC: G01S7/481 ,  F21V8/00 ,  G01S17/86 ,  G01S17/931 ,  G02B6/02 ,  G02F1/01

Abstract: A light detection and ranging (LIDAR) device includes a substrate layer, a cladding layer, a waveguide, and an ohmic element. The cladding layer is disposed with the substrate layer. The waveguide runs through the cladding layer. The ohmic element runs through the cladding layer. The ohmic element is arranged to impart heat to the waveguide when an electrical current is driven through the ohmic element.

公开(公告)号：US12222448B1

公开(公告)日：2025-02-11

申请号：US18516671

申请日：2023-11-21

Applicant: Aurora Operations, Inc.

Inventor： Ashish Bhardwaj ,  Sen Lin ,  Dong Liu ,  Xue Liu ,  Andrew Steil Michaels

IPC: G01S7/481 ,  G01S17/931 ,  H01L31/0352

Abstract: A light detection and ranging (LIDAR) sensor system for a vehicle can include: a light source configured to output a beam; a photonics integrated circuit (PIC) including a semiconductor die, the semiconductor die including a substrate having two or more semiconductor stacks respectively associated with two or more semiconductor devices formed on the substrate, the two or more semiconductor devices respectively configured to receive the beam from the light source and modify one or more features of the beam; a transmitter configured to receive the beam from the semiconductor die; and one or more optics configured to receive the beam from the transmitter and emit the beam towards an object.

公开(公告)号：US12222446B2

公开(公告)日：2025-02-11

申请号：US17528039

申请日：2021-11-16

Applicant: SOS LAB Co., Ltd.

Inventor： Ji Seong Jeong ,  Chan M Lim ,  Yong Yi Lee ,  Dong Kyu Kim ,  Jun Hwan Jang

IPC: G01S7/481 ,  B60R16/023 ,  G01S17/89 ,  G01S17/931

Abstract: A LiDAR device including a emitting unit configured to emit a laser, a detecting unit configured to detect the laser, and a controller configured to control the emitting unit and the detecting unit, wherein the controller is configured to operate the LiDAR device at in at least a first operation mode or a second operation mode in which power consumption per unit time is lower than that of the first operation mode, and wherein the controller is configured to switch an operation mode of the LiDAR device from the first operation mode to the second operation mode when the controller receives a first trigger signal from a first device, and switch the operation mode of the LiDAR device from the second operation mode to the first operation mode when the controller receives a second trigger signal from the first device.

公开(公告)号：US12222424B2

公开(公告)日：2025-02-11

申请号：US17201906

申请日：2021-03-15

Applicant: LG INNOTEK CO., LTD.

Inventor： Yahia Tachwali

IPC: G01S17/00 ,  G01S7/487 ,  G01S17/931

Abstract: Devices, systems, and methods are provided for reducing interference of light detection and ranging (LIDAR) emissions. A vehicle may identify location information associated with a location of the vehicle. The vehicle may select, based on the location information, a modulation code associated with a LIDAR photodiode of the vehicle. The vehicle may emit, using the LIDAR photodiode, one or more LIDAR pulses based on the modulation code.

公开(公告)号：US20250044426A1

公开(公告)日：2025-02-06

申请号：US18791257

申请日：2024-07-31

Applicant: Scantinel Photonics GmbH

Inventor： Stanislav Aksarin

IPC: G01S7/4911 ,  G01S7/481 ,  G01S17/32 ,  G01S17/931 ,  H01S5/062 ,  H01S5/14

Abstract: A tunable light source for a frequency-modulated continuous wave (FMCW) LiDAR device includes an external cavity laser including a laser gain medium having a light output facet emitting laser light, a reflector and an external cavity waveguide extending between the light output facet and the reflector. A variable phase shifter is arranged in the external cavity waveguide. An optical splitter splits off a portion of the laser light and has an output port. An optical phase-locked loop is optically coupled to the optical splitter and electrically coupled to the laser gain medium. The optical phase-locked loop includes a first arm and a second arm, a double stage single-sideband Weaver mixer including an optical stage and an electrical stage, a phase detector and a loop filter that are electrically connected in series. The first arm and the second arm have different optical path lengths.