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    • 6. 发明申请
    • System and method for CDMA geolocation
    • CDMA地理位置的系统和方法
    • US20050192026A1
    • 2005-09-01
    • US11008154
    • 2004-12-10
    • John CarlsonThomas GravelyJoseph Kennedy
    • John CarlsonThomas GravelyJoseph Kennedy
    • G01S5/06H04W4/02H04W64/00H04Q7/20
    • H04W64/00G01S5/06H04W4/02
    • A system and method is disclosed for determining the location of a mobile appliance using the reverse pilot channel provided in CDMA 2000 communication systems to determine an attribute (e.g., time of arrival, angle of arrival, time difference of arrival, received power level) of a reverse pilot signal at one or more wireless location sensors. A network overlay of wireless location sensors monitors the reverse pilot channel for a target mobile's reverse pilot signal. The monitored signal may be compared to a reference signal to determine a correlation and thereby determine an attribute of the target mobile's reverse pilot signal. The method may be performed independently from the communication system and without requiring retrieval of information bits from the mobile appliance. The reference signal may be generated from the unique long spreading code mask of the target mobile appliance which is typically a function of the ESN of the target mobile appliance.
    • 公开了一种用于使用CDMA 2000通信系统中提供的反向导频信道确定移动设备的位置的系统和方法,以确定属性(例如,到达时间,到达时间,到达时间差,接收功率电平) 在一个或多个无线位置传感器处的反向导频信号。 无线位置传感器的网络覆盖监视目标移动台的反向导频信号的反向导频信道。 所监视的信号可以与参考信号进行比较,以确定相关性,从而确定目标移动台的反向导频信号的属性。 该方法可以独立于通信系统执行,而不需要从移动设备检索信息位。 参考信号可以从目标移动设备的唯一的长扩展码掩码生成,其通常是目标移动设备的ESN的函数。