Method of improving a vehicle emergency call network
    1.
    发明申请
    Method of improving a vehicle emergency call network 有权
    改善车辆紧急呼叫网络的方法

    公开(公告)号:US20070152877A1

    公开(公告)日:2007-07-05

    申请号:US11323502

    申请日:2005-12-30

    IPC分类号: G01S5/14 H04M11/04

    摘要: A method of improving a vehicle emergency call network used during an enhanced 911 call, which is especially useful in environments having degraded GPS signals. The present method utilizes an independent position enhancement algorithm, such as a dead reckoning algorithm, and converts the output of that algorithm into a compatible format compatible with a position determining entity (PDE). Some independent position enhancement algorithms return output in the form of position information (typically, two- or three-dimensional coordinates), however, most PDEs only accept information in the form of pseudo-ranges. Thus, the present method provides a technique in which the advantages of an independent position enhancement algorithm are enjoyed, yet a compatible output is sent to the PDE.

    摘要翻译: 一种改进在增强型911呼叫期间使用的车辆紧急呼叫网络的方法,其在具有劣化的GPS信号的环境中特别有用。 本方法利用独立的位置增强算法,例如航位推算算法,并将该算法的输出转换成与位置确定实体(PDE)兼容的兼容格式。 一些独立的位置增强算法以位置信息(通常为二维或三维坐标)的形式返回输出,然而,大多数PDE只接受伪距形式的信息。 因此,本方法提供了一种技术,其中享受独立位置增强算法的优点,但是向PDE发送兼容的输出。