公开(公告)号：US12066549B1

公开(公告)日：2024-08-20

申请号：US18652664

申请日：2024-05-01

申请人： Hefei Institutes of Physical Science, Chinese Academy of Sciences

发明人： Chenbo Xie ,  Yalin Hu ,  Hui Zhou ,  Hao Yang ,  Liangliang Cheng ,  Wenyue Zhu ,  Yingjian Wang

IPC分类号： G01S17/00 ,  G01S7/481 ,  G01S17/58 ,  G01S17/95

CPC分类号： G01S17/95 ,  G01S7/4815 ,  G01S7/4816 ,  G01S7/4817 ,  G01S17/58

摘要： Disclosed are a same-path and synchronous detection system and a same-path and synchronous detection method for atmosphere data. The detection system includes an emission unit, a receiving unit and a data processing unit, where the emission unit includes multiple sets of laser devices, which are used for emitting the laser of different wavelengths in a synchronous and same-path manner; the receiving unit includes a receiving telescope, which is symmetrically provided with a plurality of pupils, to receive an echo signal after the laser of different wavelengths interacts with the atmosphere; and the data processing unit is configured to calculate atmosphere data parameters through the echo signal. The synchronous and same-path detection for a plurality of atmosphere data parameters may be implemented in the present disclosure.

公开(公告)号：US12025441B2

公开(公告)日：2024-07-02

申请号：US17857103

申请日：2022-07-04

申请人： Aeva, Inc.

发明人： Richard L. Sebastian ,  Anatoley T. Zheleznyak

IPC分类号： G01C11/00 ,  G01C11/02 ,  G01S7/481 ,  G01S7/491 ,  G01S17/00 ,  G01S17/34 ,  G01S17/42 ,  G01S17/58 ,  G01S17/66 ,  G01S17/86 ,  G01S17/89 ,  G06T7/246 ,  G06T7/60 ,  G06T7/70 ,  G06T7/73 ,  G06V20/40 ,  G06V40/20 ,  H04N13/211

CPC分类号： G01C11/02 ,  G01S7/4815 ,  G01S7/491 ,  G01S17/34 ,  G01S17/42 ,  G01S17/58 ,  G01S17/66 ,  G01S17/86 ,  G01S17/89 ,  G06T7/246 ,  G06T7/248 ,  G06T7/60 ,  G06T7/70 ,  G06T7/74 ,  G06V20/46 ,  G06V40/20 ,  H04N13/211 ,  G06T2207/10028

摘要： A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target. The system estimates this trajectory in two stages: a first stage in which the range and Doppler measurements from the lidar system along with various feature measurements obtained from the images from the video system are used to estimate first stage motion aspects of the target (i.e., the trajectory of the target); and a second stage in which the images from the video system and the first stage motion aspects of the target are used to estimate second stage motion aspects of the target. Once the second stage motion aspects of the target are estimated, a three-dimensional image of the target may be generated.

公开(公告)号：US12019189B2

公开(公告)日：2024-06-25

申请号：US16480220

申请日：2018-01-24

申请人： Analog Devices, Inc.

发明人： Michael Howard Anderson ,  Scott Robert Davis ,  Benjamin Luey

IPC分类号： G01S7/4863 ,  G01S7/481 ,  G01S7/4861 ,  G01S7/487 ,  G01S17/00 ,  G01S17/06 ,  G01S17/42 ,  G01S17/89

CPC分类号： G01S7/4863 ,  G01S7/4816 ,  G01S7/4817 ,  G01S17/42 ,  G01S17/89 ,  G01S7/4861 ,  G01S7/487 ,  G01S7/4876 ,  G01S17/00 ,  G01S17/06

摘要： A system and method for providing a dynamic composite field of view in a scanning lidar system, such as to improve a signal-to-noise ration of detected light. The dynamic composite field of view can include a subset of the available detector pixels, and can thereby reduce noise introduce by noise sources that can scale with a detector area, such as dark current and gain peaking that can be caused by a capacitance of the photodetector.

公开(公告)号：US12013487B2

公开(公告)日：2024-06-18

申请号：US17839185

申请日：2022-06-13

申请人： Valve Corporation

发明人： Alan Yates ,  Jeremy Adam Selan

IPC分类号： G01S7/481 ,  G01S7/4912 ,  G01S17/00 ,  G02B27/01

CPC分类号： G01S7/481 ,  G01S7/4917 ,  G01S7/4814 ,  G01S17/003 ,  G02B27/0172

摘要： Optical positional tracking systems that may be used in virtual reality (VR)/augmented reality (AR) applications are described. Exemplary implementations comprise one or more receivers and one or more transmitters. Exemplary transmitters contain two orthogonal rotors that each emit a fan-shaped laser beam. Each beam is swept as the rotors are spun at constant speed. Exemplary optical receivers can be relatively small, and mounted at convenient locations on the VR display. These receivers consist of small optical detectors that may be mounted on head-mounted VR displays. Exemplary systems determine position by measuring the time at which each swept beam crosses each receiver/detector.

公开(公告)号：US11994627B2

公开(公告)日：2024-05-28

申请号：US16927466

申请日：2020-07-13

申请人： Artis, LLC

发明人： Jared Bench

IPC分类号： G01S7/487 ,  G01S7/484 ,  G01S7/4863 ,  G01S17/00 ,  G01S17/10

CPC分类号： G01S7/487 ,  G01S7/484 ,  G01S7/4863 ,  G01S17/003 ,  G01S17/10

摘要： An example μTOF is a flexible, small, sensor unit that uses modulated light to measure distance. The architecture of the sensor allows for many use cases. Use cases include the classic single emitter, single detector topology, but also include capability for operability as a full multi-input, multi-output (MIMO) system. In a MIMO configuration, the emitters and detectors can be arranged in a configuration similar to an RF antenna array or any number of other configurations from a single emitter/detector pair to vast dispersions of emitters and detectors. By coding the signal output by each emitter with a unique pseudo-noise (PN) or similar sequence, reflected signals received at the detector can be separated from each other, providing path distances between each emitter-detector pair. Given the robustness and noise immunity of PN sequences, this approach works well even with signal levels well below the noise floor. Using the measured path distances from each sensor to each emitter, the locations of objects in the scene can be extracted by triangulation.

公开(公告)号：US11965963B2

公开(公告)日：2024-04-23

申请号：US17512054

申请日：2021-10-27

申请人： DENSO WAVE INCORPORATED

发明人： Eiichi Sueyoshi

IPC分类号： G01S17/00 ,  G01S7/4865 ,  G01S17/14

CPC分类号： G01S17/14 ,  G01S7/4865

摘要： The laser radar includes a clock generator, a projection unit configured to project pulse laser light in synchronization with a clock signal, a light reception unit configured to receive reflected light, a counter configured to count a counter value which is the number of clock signals generated from a projection timing until a light reception timing, a delay circuit in which a plurality of stages of delay units are connected and to which the clock signal is successively input, and a time calculation unit configured to calculate a round trip time of the pulse laser light on the basis of the counter value and the number of hops which is the number of stages of the delay units to which a head of the clock signal is transmitted in a period of the clock signal including the light reception timing.

公开(公告)号：US11906623B1

公开(公告)日：2024-02-20

申请号：US18159546

申请日：2023-01-25

申请人： PlusAI, Inc.

发明人： Ankur Agarwal ,  Timothy P. Daly, Jr. ,  Anurag Ganguli

IPC分类号： G01S17/00 ,  G01S17/58 ,  G01S7/4865 ,  G01S17/931

CPC分类号： G01S17/58 ,  G01S7/4865 ,  G01S17/931

摘要： Techniques are described for determining whether to process a job request. An example, method can include a device emitting a first pulse using a light detection and ranging (LIDAR) system coupled to an autonomous vehicle. The device can receive a first signal reflected off of an object. The device can emit a second pulse using the system, a threshold time interval being configured for the second laser pulse to hit the object in motion. The device can receive a second signal reflected off of the object. The device can determine a first time of flight information of the first signal and a second time of flight information of the second signal. The device can determine a velocity of the object based at least in part on the first time of flight information and the second time of flight information.

公开(公告)号：US20240012146A1

公开(公告)日：2024-01-11

申请号：US18215189

申请日：2023-06-28

申请人： Fujitsu Limited

发明人： Liuan WANG ,  Huigang ZHANG ,  Ping WANG ,  Jun SUN

IPC分类号： G01S17/66 ,  G01S17/89 ,  G01S17/58 ,  G01S7/48 ,  G01S17/00

CPC分类号： G01S17/66 ,  G01S17/89 ,  G01S17/58 ,  G01S7/4802 ,  G01S7/4808 ,  G01S17/006

摘要： The present disclosure relates to a method, an apparatus and a storage medium for multi-target multi-camera tracking. According to an embodiment of the present disclosure, the method comprises: determining an overall local target trajectory set including a local target trajectory set of each camera by performing single-camera multi-target tracking on a corresponding image sequence provided by each camera of a plurality of cameras; and determining a global target trajectory set for the plurality of cameras by performing multi-camera multi-target matching on the overall local target trajectory set; wherein determining the global target trajectory set comprises: determining a cluster matched global trajectory set by clustering local target trajectories; determining a cost-minimum path set by implementing a cost-minimum path algorithm on a directed graph; and merging corresponding trajectories in the cluster matched global trajectory set based on the cost-minimum path set.

公开(公告)号：US11867811B2

公开(公告)日：2024-01-09

申请号：US17458660

申请日：2021-08-27

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Heesun Yoon ,  Jungwoo Kim ,  Tatsuhiro Otsuka ,  Inoh Hwang

IPC分类号： G01S17/00 ,  G01S17/10

CPC分类号： G01S17/10

摘要： Provided are a LiDAR device and a method of operating the LiDAR device. The LiDAR device includes a light-emitting unit configured to emit modulated light onto an object, a light-receiving unit configured to receive the modulated light reflected by the object, a computation unit configured to calculate a distance to the object based on a reception signal of the modulated light provided by the light-receiving unit, a modulation unit configured to provide a modulation signal to the light-emitting unit to generate the modulated light, and a controller configured to control operations of at least one of the light-emitting unit, the light-receiving unit, the computation unit, and the modulation unit.

公开(公告)号：US11841433B2

公开(公告)日：2023-12-12

申请号：US16749903

申请日：2020-01-22

申请人： Carl Zeiss Industrielle Messtechnik GmbH

发明人： Volker Rasenberger ,  Wolfgang Hoegele ,  Florian Rettich ,  Thomas Mayer

IPC分类号： G01S17/00 ,  G01S17/66 ,  G01S17/74 ,  G01S7/00

CPC分类号： G01S17/66 ,  G01S7/003 ,  G01S17/74

摘要： An apparatus for determining a spatial position and orientation of a tracked measuring device includes a light detection and ranging (LIDAR) unit having at least one measurement channel configured to generate at least one measurement signal, and a control and evaluation unit including a reception unit configured to receive data from the tracked measuring device in wireless fashion, the LIDAR unit being configured to generate a LIDAR signal for the at least one measurement signal and to transfer said LIDAR signal to the control and evaluation unit, the apparatus having a synchronization channel integrated at least in part into the measurement channel of the LIDAR unit and configured to determine a synchronization information item, and the control and evaluation unit being configured to temporally synchronize the data of the tracked measuring device and the LIDAR signal by taking into account the at least one synchronization information item.