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    • 6. 发明申请
    • ESTIMATING AN INITIAL POSITION AND NAVIGATION STATE USING VEHICLE ODOMETRY
    • 使用车辆测距法估算初始位置和航行状态
    • WO2014153496A1
    • 2014-09-25
    • PCT/US2014/031419
    • 2014-03-21
    • QUALCOMM INCORPORATED
    • WERNER, Benjamin A.MORRISON, William JamesRILEY, Wyatt ThomasCZOMPO, Joseph
    • G01C21/20
    • G01C21/00G01C21/20
    • The disclosure relates to estimating an initial position and navigation state associated with a vehicle using odometry and/or other data obtained from the vehicle to support dead reckoning at start-up. In particular, a last known position and last known heading at a first odometer value associated with the vehicle may be stored and compared to a current odometer value after linking a mobile device with the vehicle. The last known position and last known heading may be used to estimate the initial position and navigation state associated with the vehicle based on a difference between the compared odometer values. For example, the estimated initial position and/or navigation state may substantially correspond to the last known position and last known heading if the difference between the odometer values indicates no change, or a non-zero difference may define a radius to limit an estimated error associated with the initial position estimate.
    • 本公开涉及使用测距仪和/或从车辆获得的其他数据来估计与车辆相关联的初始位置和导航状态,以支持在启动时的推算。 特别地,可以将与车辆相关联的第一里程计值的最后一个已知位置和最后一个已知航向存储并与移动设备与车辆连接之后与当前里程计值进行比较。 最后一个已知的位置和最后一个已知航向可以用于基于比较的里程计值之间的差异来估计与车辆相关联的初始位置和导航状态。 例如,估计的初始位置和/或导航状态可以基本上对应于最后一个已知位置和最后一个已知的航程,如果里程表值之间的差表示没有变化,或者非零差异可以限定半径以限制估计的误差 与初始位置估计相关联。