RESOLUTION ENHANCEMENT FOR SCANNING LIDAR/LADAR

    公开(公告)号:US20180348344A1

    公开(公告)日:2018-12-06

    申请号:US15612906

    申请日:2017-06-02

    Abstract: Disclosed herein are techniques for affecting the resolution of an optical scanning system. More specifically, a receiver of the optical scanning system includes a set of photodetectors and an optical beam directing subsystem. The optical beam directing subsystem is configured to, in each scan step of a plurality of scan steps, receive light reflected from a target region illuminated by a scanning beam and including a plurality of areas, and direct light reflected from each area of the plurality of areas to a corresponding photodetector in the set of photodetectors. Each photodetector of the set of photodetectors receives light reflected from a corresponding area of the plurality of areas to generate a detection signal.

    Communicating service information from one light detection and ranging (LIDAR) system to another LIDAR system

    公开(公告)号:US10114112B2

    公开(公告)日:2018-10-30

    申请号:US14669163

    申请日:2015-03-26

    Abstract: Communicating service information from one light detection and ranging (LIDAR) system to another LIDAR system is disclosed. In one aspect, a method for receiving information from a LIDAR system is provided. The method includes transmitting, by a first LIDAR system, a first light signal modulated to include a first identifier associated with the first LIDAR system into an environment. A second light signal is received from the environment. The second light signal is decoded to extract a second identifier. It is determined that the second identifier is associated with a second LIDAR system. Service information is extracted from the second light signal. An action is performed based on the service information.

    SYSTEM AND METHOD FOR MEASURING REFERENCE AND RETURNED LIGHT BEAMS IN AN OPTICAL SYSTEM

    公开(公告)号:US20180045816A1

    公开(公告)日:2018-02-15

    申请号:US15235041

    申请日:2016-08-11

    CPC classification number: G01S7/4814 G01S7/4817 G01S7/4863 G01S17/06 G01S17/42

    Abstract: Disclosed herein are techniques for measuring a reference beam and a corresponding returned beam from a target in a measurement system using a single sensor array. The system is configured such that the location of the reference beam is space apart from the location of the returned beam on the sensor array. A first set of sensor elements on the sensor array corresponding to the reference beam is dynamically activated based on a laser beam scanning control signal. The detection signal from the first set of sensor elements is used to determine a location and/or a pattern of the reference beam, which are then used to estimate a location and/or a pattern of the corresponding returned beam on the same sensor array and dynamically select and activate a second set of sensor elements on the sensor array based on the estimated location and/or pattern of the corresponding returned beam.

    Positioning when SPS information is spoofed

    公开(公告)号:US12032072B2

    公开(公告)日:2024-07-09

    申请号:US17244779

    申请日:2021-04-29

    CPC classification number: G01S19/215 G01S19/06 G01S19/31

    Abstract: Techniques are discussed herein for detecting anomalous signals such as spoofed satellite positioning system (SPS) signals and for the transmission of accurate location estimates between user equipments (UEs) when the SPS signals are not reliable. A UE determines an SPS derived location estimate and determines an associated confidence level. The confidence level is determined based on time or location derived from the SPS signals, e.g., relative to local time or non-SPS information, such as stored previous location estimates, non-SPS sensor information, and location information from other UEs. The UE transmits location information to other UEs that includes a selected location estimate, confidence level, and the source of the location estimate, e.g., where the SPS derived location estimate is selected if the confidence level is high and the non-SPS derived location estimate is selected if the confidence level is low.

    POSITIONING WHEN SPS INFORMATION IS SPOOFED

    公开(公告)号:US20220350030A1

    公开(公告)日:2022-11-03

    申请号:US17244779

    申请日:2021-04-29

    Abstract: Techniques are discussed herein for detecting anomalous signals such as spoofed satellite positioning system (SPS) signals and for the transmission of accurate location estimates between user equipments (UEs) when the SPS signals are not reliable. A UE determines an SPS derived location estimate and determines an associated confidence level. The confidence level is determined based on time or location derived from the SPS signals, e.g., relative to local time or non-SPS information, such as stored previous location estimates, non-SPS sensor information, and location information from other UEs. The UE transmits location information to other UEs that includes a selected location estimate, confidence level, and the source of the location estimate, e.g., where the SPS derived location estimate is selected if the confidence level is high and the non-SPS derived location estimate is selected if the confidence level is low.

    Hybrid scanning lidar systems
    38.
    发明授权

    公开(公告)号:US10534074B2

    公开(公告)日:2020-01-14

    申请号:US15253687

    申请日:2016-08-31

    Abstract: Disclosed herein are techniques for light beam scanning in a light detection and ranging (LIDAR) system. The LIDAR system includes a beam shaping subsystem configured to generate an illumination pattern elongated in a first direction, and a scanning subsystem configured to direct the elongated illumination pattern towards a plurality of positions along a second direction different from the first direction. The LIDAR system further includes a sensor configured to generate a detection signal in response to detecting light reflected by a target object illuminated by the elongated illumination pattern, and a processor configured to determine a characteristic of the target object based on the detection signal.

    Timing synchronization of LIDAR system to reduce interference

    公开(公告)号:US10338201B2

    公开(公告)日:2019-07-02

    申请号:US15263613

    申请日:2016-09-13

    Abstract: An example method for use with a LIDAR system includes assigning a firing time of a laser included in the LIDAR system. The assignment of the firing time includes: (i) receiving a universal clock signal at the LIDAR system, where the universal clock signal common to one or more other LIDAR systems; (ii) synchronizing a system clock of the LIDAR system to the universal clock signal to generate a synchronized clock signal; and determining the firing time based on the synchronized clock signal to reduce interference with the one or more other LIDAR systems. The method also includes firing the laser at the firing time.

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