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    • 35. 发明申请
    • Apparatus and method for detecting vehicle location in navigation system
    • 用于检测导航系统中车辆位置的装置和方法
    • US20050021229A1
    • 2005-01-27
    • US10897466
    • 2004-07-22
    • Han LeeMun JungDong YiMoon Joe
    • Han LeeMun JungDong YiMoon Joe
    • G01C21/30
    • G01C21/30
    • When a vehicle location is estimated using only detection signals from a sensor unit installed on a vehicle since the value of dilution of precision (DOP) of a navigation message received by a GPS receiver is equal to or greater than a predetermined threshold in a navigation system, the vehicle location is precisely estimated using a traveled distance, a travel angle difference, and lateral and longitudinal inclinations of the vehicle. The value of DOP of the navigation message received by the GPS receiver is compared with the predetermined threshold. If the value of DOP is less than the predetermined threshold, reference vehicle location information is set using the navigation message. If the value of DOP is equal to or greater than the predetermined threshold, the reference vehicle location information is set using vehicle location information just previously map-matched and the detection signals from the sensor unit. The vehicle location is estimated using the set reference vehicle location information and the detection signals from the sensor unit and then map-matched on a digital map stored in a map data storage unit, thereby displaying the map-matched results on a display unit.
    • 当使用来自安装在车辆上的传感器单元的检测信号来估计车辆位置时,由于GPS接收机接收到的导航消息的精度(DOP)的稀释值在导航系统中等于或大于预定阈值 使用行驶距离,行驶角度差以及车辆的横向和纵向倾斜度精确估计车辆位置。 将由GPS接收机接收的导航消息的DOP值与预定阈值进行比较。 如果DOP的值小于预定阈值,则使用导航消息设定参考车辆位置信息。 如果DOP的值等于或大于预定阈值,则使用刚刚映射匹配的车辆位置信息和来自传感器单元的检测信号来设定参考车辆位置信息。 使用所设置的基准车辆位置信息和来自传感器单元的检测信号来估计车辆位置,然后在存储在地图数据存储单元中的数字地图上映射匹配,从而在显示单元上显示地图匹配结果。