中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

2413 records (took 0.035 seconds)

    UNMANNED AERIAL VEHICLE (UAV) AND DISTANCE MEASURING AND FILTERING DEVICE AND METHOD THEREOF AND DISTANCE MEASUREMENT METHOD BASED ON SAME
    362.
    发明公开
    UNMANNED AERIAL VEHICLE (UAV) AND DISTANCE MEASURING AND FILTERING DEVICE AND METHOD THEREOF AND DISTANCE MEASUREMENT METHOD BASED ON SAME 审中-公开

    公开(公告)号：EP3367127A1

    公开(公告)日：2018-08-29

    申请号：EP16856909.3

    申请日：2016-10-20

    Applicant: Guangzhou Xaircraft Technology Co., Ltd.

    Inventor： CHEN, Yousheng

    IPC: G01S15/08 ,  G01S7/52

    CPC classification number: G01S15/08 ,  B64C39/024 ,  B64C2201/141 ,  G01C21/12 ,  G01S15/60 ,  G01S15/93

    Abstract: A method for filtering in ranging of a UAV based on a sonar sensor is provide, which is based on a characteristic that velocities of the UAV change continuously during a moving process. A current velocity of the UAV is obtained via seeking difference of distances measured by the sensor, then a variance of continuous velocities is calculated and it is determined whether a current distance is valid according to the variance. The general process of the method is as follows. First, initial distances measured by the sonar sensor are acquired, secondly, it is determined whether a new distance is valid according to the initial distances, if the new distance satisfies a curtain condition, the new distance is considered to be valid and the initial distances are updated; if the new distance does not satisfy the curtain condition, a distance is estimated and used as the current distance and the initial distances are maintained. With the present disclosure, measurement noises of the sonar sensor is filtered, and the measurement accuracy and stability of the sonar sensor is improved.

Patent Agency Ranking