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1248 条记录 (耗时 0.018 秒)

    METHOD AND SYSTEM FOR DETERMINING INITIAL HEADING ANGLE
    12.
    发明公开
    METHOD AND SYSTEM FOR DETERMINING INITIAL HEADING ANGLE 审中-公开

    公开(公告)号：EP4336145A1

    公开(公告)日：2024-03-13

    申请号：EP22194711.2

    申请日：2022-09-08

    申请人： Septentrio N.V.

    发明人： NAZEMZADEH, Payam ,  VOLCKAERT, Marnix

    IPC分类号： G01C21/16 ,  G01C21/30 ,  G01S19/38 ,  G01S19/47 ,  G01C25/00

    摘要： Method of determining a heading angle of a mobile body, comprising determining an initial position of the mobile body and defining a plurality of different initial heading angles and a plurality of instances of the mobile body. Each of the plurality of instances is associated with one of the plurality of initial heading angles and with the initial position. The mobile body is moved and inertial navigation data associated with the mobile body is collected. A position of each of the plurality of instances is determined based on the inertial navigation data. An absolute position measurement is performed to determine an absolute position of the mobile body. The absolute position is compared with the position of each of the plurality of instances to find a best-fit instance of the plurality of instances that best fits the absolute position. The heading angle of the mobile body is determined based on a heading angle associated with the best-fit instance. A navigation system is configured to carry out the above method.

    METHOD AND SYSTEM FOR CALIBRATING LASER SCANNER
    20.
    发明公开
    METHOD AND SYSTEM FOR CALIBRATING LASER SCANNER 审中-公开

    公开(公告)号：EP4273506A1

    公开(公告)日：2023-11-08

    申请号：EP21913001.0

    申请日：2021-07-06

    申请人： Northwest Instrument Inc.

    发明人： WANG, Weichen ,  SHI, Xin ,  XING, David

    IPC分类号： G01C25/00 ,  G01C15/00

    摘要： The present disclosure discloses a method and a system for calibrating a laser level. The method includes arranging the laser level and a detector on a same horizontal plane to cause the laser level to be at a detected position, setting the laser level to be in a dot-sweep mode or a fan-sweep mode, when the detector detects the laser beam for calibration emitted by the laser level, generating first position information by the detector, when the laser level rotates to a first rotation angle, rotating a laser projection direction of the laser level relative to the laser level along the opposite direction by a first rotation angle to cause the detector to detect the laser beam for calibration emitted by the laser level to generate second position information, and determining whether the laser level needs to be calibrated based on the first position information and the second position information. The present disclosed content causes the laser level to use the detector to perform detection and calibration on the precision of the laser level in a fan-sweep mode or a dot-sweep mode.