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    • 10. 发明授权
    • Accuracy and performance of a hybrid positioning system
    • 混合定位系统的精度和性能
    • US08638256B2
    • 2014-01-28
    • US12569106
    • 2009-09-29
    • Farshid Alizadeh-ShabdizMohammad A. Heidaran
    • Farshid Alizadeh-ShabdizMohammad A. Heidaran
    • G01S19/48
    • G01S19/13G01S19/48
    • The present disclosure relates to a method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device. The method can include determining an initial WPS position of the device using WPS, calculating an error region around the initial WPS position of the device, dividing the error region into a plurality of points, obtaining satellite measurements from at least two satellites in view of the device, determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites, selecting the point with the lowest variation in the receiver clock bias, and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device.
    • 本公开涉及一种用于确定WLAN定位系统(WPS)和卫星定位系统(SPS)使能设备的位置的方法。 该方法可以包括使用WPS确定设备的初始WPS位置,计算设备的初始WPS位置周围的误差区域,将误差区域划分为多个点,从至少两个卫星获得卫星测量 设备,基于来自至少两颗卫星的卫星测量确定误差区域内的每个点的接收机时钟偏差的变化,选择接收机时钟偏差中具有最低变化的点,以及确定是否使用该点 接收机时钟偏差的变化最小,以改善器件的初始WPS位置。