SYSTEMS AND METHODS FOR MODIFYING LIDAR FIELD OF VIEW

    公开(公告)号:WO2021050233A1

    公开(公告)日:2021-03-18

    申请号:PCT/US2020/047133

    申请日:2020-08-20

    Applicant: WAYMO LLC

    Abstract: The present disclosure relates to systems, methods, and vehicles that facilitate a light detection and ranging (LIDAR or lidar) system that may take advantage of "dead angles" where the lidar system is oriented toward support structure or another "uninteresting" feature. In such scenarios, light pulses may be redirected toward more-interesting features in the environment. An example system includes a lidar system configured to emit light pulses into an environment of the system so as to provide information indicative of objects within a default field of view. The system also includes a reflective surface optically coupled to the lidar system. The reflective surface is configured to reflect at least a portion of the emitted light pulses so as to provide an extended field of view. The lidar system is further configured to provide information indicative of objects within the extended field of view.

    測距装置、測距方法、並びにプログラム

    公开(公告)号:WO2020158378A1

    公开(公告)日:2020-08-06

    申请号:PCT/JP2020/000960

    申请日:2020-01-15

    Inventor: 杉山 寿伸

    Abstract: 本技術は、混信の影響を低減し、精度良く測距を行えるようにする測距装置、測距方法、並びにプログラムに関する。 照射光を発光する発光部と、照射光が対象物において反射した反射光を受光する受光部と、照射光の発光から反射光の受光までの時間に基づいて、対象物までの距離を算出する算出部と、発光部を制御する発光制御部とを備え、発光制御部は、所定のフレーム内において、第1の発光モードと、第1の発光モードとは異なる第2の発光モードと、を切り替えて発光部の発光を制御する。本技術は、例えば測距を行う測距装置に適用できる。

    SYSTEMS AND METHODS FOR LIDARS WITH ADJUSTABLE RESOLUTION AND FAILSAFE OPERATION

    公开(公告)号:WO2019118076A1

    公开(公告)日:2019-06-20

    申请号:PCT/US2018/058359

    申请日:2018-10-31

    Applicant: WAYMO LLC

    Abstract: The present disclosure relates to systems and methods operable to provide point cloud information about an environment based on reconfigurable spatial light emission patterns and reconfigurable light detector arrangements that correspond to the light emission patterns. Additionally, a LIDAR device with a plurality of light emitters and photodetectors may be operated in a first mode of operation or a second mode of operation. The first mode of operation could be a normal mode of operation. The second mode of operation could be a failsafe mode of operation that is used when a fault condition is detected.

    一种基于光学相位阵列的激光雷达收发天线及测距方法

    公开(公告)号:WO2019028948A1

    公开(公告)日:2019-02-14

    申请号:PCT/CN2017/099681

    申请日:2017-08-30

    CPC classification number: G01S7/481 G01S7/483 G01S17/08

    Abstract: 一种基于光学相位阵列的激光雷达收发天线及测距方法,包括基于单点收发器的测距模块(17)、信号处理模块(7)、中央控制器(20)和激光驱动模块(2),激光驱动模块(2)和信号处理模块(7)均与中央控制器(20)连接;测距模块(17)包括单点发射单元(50)和单点接收单元(60),激光驱动模块(2)驱动单点发射单元(50)发射出一束光线,并控制光束的光信号发射方向,单点接收单元(60)接收被探测物反射的光信号并发送至信号处理模块(7)进行处理,计算出探测物的位移。单点发射单元(50)和单点接收单元(60)可以为透射型光学相位阵列也可以为反射型光学相位阵列,发射光和接收光的中心点可以在同一个光轴,也可以在不同的两个光轴,使得激光雷达系统的收发天线设计实现成像扫描固态化,具有低成本、高信噪比等优点。

    VERFAHREN ZUR BEREITSTELLUNG EINES DETEKTIONSSIGNALS FÜR ZU DETEKTIERENDE OBJEKTE

    公开(公告)号:WO2018224468A1

    公开(公告)日:2018-12-13

    申请号:PCT/EP2018/064697

    申请日:2018-06-05

    Abstract: Die Erfindung betrifft ein Verfahren zur Bereitstellung eines Detektionssignals für zu detektierende Objekte (70), wobei zwei erste Photonenpakete (4, 5) unterschiedlicher Wellenlänge (λ1, λ2) mit verschränkten Photonenpaaren erzeugt werden und wobei Photonen eines der ersten Photonenpakete (4, λ1) auf ein Objekt (70) ausgesendet werden wobei das vom Objekt (70) reflektierte Photonenpaket (λ1) dann mittels Quantenverschränkung mit dem zweiten ersten Photonenpaket (5, λ2) wechselwirkt und wobei das Detektionssignal basierend auf der Zeitdifferenz von Aussendung des ersten Photonenpakets (4, λ1) auf das Objekt (70) und Detektion einer Wechselwirkung zwischen den beiden Photonenpaketen (λ1, λ2) erzeugt wird.

    METHOD OF PROVIDING INTERFERENCE REDUCTION AND A DYNAMIC REGION OF INTEREST IN A LIDAR SYSTEM

    公开(公告)号:WO2018194721A1

    公开(公告)日:2018-10-25

    申请号:PCT/US2017/065392

    申请日:2017-12-08

    Abstract: A system and method for providing a dynamic region of interest in a lidar system can include scanning a light beam over a field of view to capture a first lidar image, identifying a first object within the captured first lidar image, selecting a first region of interest within the field of view that contains at least a portion of the identified first object, and capturing a second lidar image, where capturing the second lidar image includes scanning the light beam over the first region of interest at a first spatial sampling resolution, and scanning the light beam over the field of view outside of the first region of interest at a second spatial sampling resolution, wherein the second sampling resolution is different the first spatial sampling resolution.

    COHERENT LIDAR SYSTEM USING TUNABLE CARRIER-SUPPRESSED SINGLE-SIDEBAND MODULATION
    9.
    发明申请
    COHERENT LIDAR SYSTEM USING TUNABLE CARRIER-SUPPRESSED SINGLE-SIDEBAND MODULATION 审中-公开
    相干激光雷达系统采用可调载波抑制的单边带调制

    公开(公告)号:WO2017210000A1

    公开(公告)日:2017-12-07

    申请号:PCT/US2017/033741

    申请日:2017-05-22

    Inventor: KANEDA, Noriaki

    Abstract: We disclose a lidar system, that includes a modulator-based probe-light generator and a coherent optical receiver. The probe-light generator uses tunable carrier-suppressed single-sideband modulation to generate frequency-chirped optical pulses for the optical-probe beam directed at the target. The coherent optical receiver uses a homodyne detection scheme in which a split portion of the optical-probe beam is used as an optical local oscillator signal for detecting a corresponding optical beam reflected by the target. The resulting electrical RF signals generated by the receiver can be processed, e.g., using a disclosed signal-processing method, to determine one or both of the distance to the target and the velocity of the target.

    Abstract translation: 我们公开了一种激光雷达系统,其包括基于调制器的探测光发生器和相干光接收器。 探测光发生器使用可调载波抑制的单边带调制来产生针对目标的光探测光束的频率啁啾光脉冲。 相干光接收器使用零差检测方案,其中将光探测光束的分离部分用作光本地振荡器信号,以检测由目标反射的相应光束。 可以例如使用所公开的信号处理方法来处理由接收器产生的所得到的电RF信号以确定到目标​​的距离和目标的速度中的一个或两者。

    COMPACT LIDAR SYSTEM
    10.
    发明申请
    COMPACT LIDAR SYSTEM 审中-公开
    紧凑激光系统

    公开(公告)号:WO2016164435A1

    公开(公告)日:2016-10-13

    申请号:PCT/US2016/026178

    申请日:2016-04-06

    Applicant: OEWAVES, INC.

    Abstract: An FM LIDAR system is described that includes a frequency modulated LIDAR system that incorporates a laser source that is optically coupled to a whispering gallery mode optical resonator. Light from the laser that is coupled into the whispering gallery mode optical resonator is coupled back out as a returning counterpropagating wave having a frequency characteristic of a whispering gallery mode of the optical resonator. This returning wave is used to reduce the linewidth of the source laser by optical injection. Modulation of the optical properties of the whispering gallery mode optical resonator results in modulation of the frequency of the frequencies supported by whispering gallery modes of the resonator, and provides a method for producing highly linear and reproducible optical chirps that are highly suited for use in a LIDAR system. Methods of using such an FM LIDAR system and vehicle assisting systems that incorporate such FM LIDAR systems are also described.

    Abstract translation: 描述了一种FM激光雷达系统,其包括频率调制的LIDAR系统,其包括光学耦合到耳语画廊模式光学谐振器的激光源。 耦合到耳语画廊模式光学谐振器的激光的光被耦合回作为具有光谐振器的耳语画廊模式的频率特性的返回反向传播波。 该返回波用于通过光学注入来减少源激光器的线宽。 对于耳语画廊模式光学谐振器的光学特性的调制,可以调节由谐振器的语音画廊模式所支持的频率的频率,并且提供了一种制造高度线性且可再生的光啁啾的方法,该方法非常适用于 激光雷达系统。 还描述了使用这样的FM激光雷达系统和结合这样的FM激光雷达系统的车辆辅助系统的方法。

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