Systems and Methods for Real-Time LIDAR Range Calibration

    公开(公告)号:US20220155456A1

    公开(公告)日:2022-05-19

    申请号:US17435582

    申请日:2020-03-04

    Applicant: Waymo LLC

    Abstract: The present disclosure relates to light detection and ranging (LIDAR) devices and related methods of their use. An example LIDAR device includes a transmitter configured to transmit one or more light pulses into an environment of the LIDAR device via a transmit optical path. The LIDAR device also includes a detector configured to detect a first portion of the one or more transmitted light pulses and a second portion of the one or more transmitted light pulses, such that the detector receives at a first time the first portion of the one or more transmitted light pulses via an internal optical path within the LIDAR device and receives at a second time the second portion of the one or more transmitted light pulses via reflection by one or more objects in the environment of the LIDAR device. The second time occurs after the first time.

    Method and system for calibrating a plurality of detection systems in a vehicle

    公开(公告)号:US10852731B1

    公开(公告)日:2020-12-01

    申请号:US15971704

    申请日:2018-05-04

    Applicant: Waymo LLC

    Abstract: Aspects of the disclosure provide for a method of calibrating a vehicle's plurality of detection systems. To calibrate a first detection system, orientation data is collected using the first detection device when the vehicle faces a first direction and a second direction opposite the first direction. To calibrate a second detection system, data is collected using the second detection device while the vehicle moves in a repeatable pattern near a first object. To calibrate a third detection system, light reflected off a second object is detected using the third detection system as the vehicle is moved towards the second object. To calibrate a fourth detection system, data collected using the second detection system and the fourth detection system is compared. To calibrate a fifth detection system, radar signals reflected off a third object is received using the fifth detection system while the vehicle moves relative to the third object.

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