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    • 1. 发明授权
    • Method and apparatus for geolocating a wireless communications device
    • 一种用于地理定位无线通信设备的方法和设备
    • US06891500B2
    • 2005-05-10
    • US10292917
    • 2002-11-12
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • G01S5/06H04M3/42H04W64/00G01S3/02
    • H04W64/00G01S5/0205G01S5/06H04M2207/18H04M2242/30
    • The time difference of arrival for a signal received at two or more receiving sites as transmitted from a wireless communications device, is determined by a frequency domain technique. The constituent frequencies of the signals received at the two or more receiving sites are determined, including the phase, or a value representative of the phase, of each frequency component. The phase values for the same frequency are subtracted to yield a phase difference values as a function of frequency. The slope of the function represents the time difference of arrival for the wireless communications device signal as received at the two receiving sites. To determine the mobile location based on the determined time difference of arrival values, a seed or initial location is first assumed for the wireless communications device and the distance difference of arrival (the time difference of arrival multiplied by the speed of light) is calculated. The calculated time difference of arrival is then used to adjust the distance difference of arrival by continuously iterating the position of the wireless communications device until the calculated distance of arrival and the calculated time difference of arrival (as multiplied by the speed of light) are within a predetermined margin.
    • 由无线通信设备发送的在两个或多个接收站点接收的信号的到达时间差由频域技术确定。 确定在两个或多个接收站点处接收的信号的组成频率,包括每个频率分量的相位或表示相位的值。 减去相同频率的相位值,以产生作为频率的函数的相位差值。 功能的斜率表示在两个接收站点接收到的无线通信设备信号的到达时间差。 为了基于所确定的到达值的时间差来确定移动位置,首先假设无线通信设备的种子或初始位置,并且计算到达距离差值(到达时间差乘以光速)。 计算出的到达时差随后用于通过连续迭代无线通信设备的位置来调整到达距离,直到计算出的到达时间和计算的到达时间差值(乘以光速)在...之内 一个预定的余量。
    • 2. 发明授权
    • Automated testing for cellular telephone system including emergency positioning
    • 蜂窝电话系统的自动测试,包括紧急定位
    • US06714779B2
    • 2004-03-30
    • US10151521
    • 2002-05-20
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • H04Q720
    • H04W24/08
    • A method for automatically testing cellular telephone equipment includes a method for determining a geographic location of a mobile unit. The system includes monitoring sites located, e.g., at high elevations, so that each monitoring site electronically covers a geographical area including several cellular telephone base stations. Locations of mobile cellular stations, especially of such stations placing emergency 911 calls, are determined by comparing signal time-of-reception and other observable signal parameters at a combination of three cell sites and/or monitoring sites. Testing functions include transmitting gradually increasing power levels on a frequency assigned to a particular base station to determine the power level required to acquire service from that base station. Periodic repetitions are monitored over time to indicate any changes or degradation in performance. A scanner scans a designated group of control-channel frequencies, selecting active channels for measurement of transmission parameters and detection of anomalous transmission characteristics on any particular channel.
    • 用于自动测试蜂窝电话设备的方法包括用于确定移动单元的地理位置的方法。 该系统包括位于例如高海拔处的监测站点,使得每个监测站点电子地覆盖包括几个蜂窝电话基站的地理区域。 通过在三个小区站点和/或监控站点的组合处比较信号接收时间和其他可观察信号参数来确定移动蜂窝站的位置,特别是放置紧急911呼叫的这些站的位置。 测试功能包括在分配给特定基站的频率上逐渐增加功率电平,以确定从该基站获取服务所需的功率电平。 随着时间的推移监视周期性重复,以指示任何更改或性能下降。 扫描仪扫描指定的一组控制信道频率,选择用于测量传输参数的有效信道和检测任何特定信道上的异常传输特性。
    • 3. 发明授权
    • Optical-frequency communications system for aircraft
    • 飞机光频通信系统
    • US06577419B1
    • 2003-06-10
    • US09215986
    • 1998-12-18
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • H04B1000
    • H04B10/1143H04B10/40
    • A communications system for aircraft includes an on-board network using optical frequencies for communications within the aircraft; the network includes personal communications devices and/or other devices such as personal computers communicating via optical ports at infrared or other optical frequencies. Capability of such devices to emit radio-frequency radiation is automatically blocked on sensing the infrared system. The various optical ports are connected to each other and to a controller which includes an interface between the on-board infrared portion of the system and radio-frequency transceivers; the transceivers connect to RF antennas for communication with stations outside the aircraft.
    • 用于飞机的通信系统包括使用用于飞机内的通信的光学频率的车载网络; 网络包括个人通信设备和/或其他设备,例如通过红外线或其他光学频率的光学端口进行通信的个人计算机。 这种设备发射射频辐射的能力在感测红外系统时被自动阻断。 各个光学端口彼此连接并连接到控制器,该控制器包括系统的车载红外部分和射频收发器之间的接口; 收发器连接到RF天线,用于与飞机外部的台站进行通信。
    • 4. 发明授权
    • Automated testing for cellular telephone system including emergency positioning
    • 蜂窝电话系统的自动测试,包括紧急定位
    • US06424837B1
    • 2002-07-23
    • US09294278
    • 1999-04-19
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • H04Q720
    • H04W24/08
    • A method for automatically testing cellular telephone equipment includes a method for determining a geographic location of a mobile unit. The system includes monitoring sites located, e.g., at high elevations, so that each monitoring site electronically covers a geographical area including several cellular telephone base stations. Locations of mobile cellular stations, especially of such stations placing emergency 911 calls, are determined by comparing signal time-of-reception and other observable signal parameters at a combination of three cell sites and/or monitoring sites. Testing functions include transmitting gradually increasing power levels on a frequency assigned to a particular base station to determine the power level required to acquire service from that base station. Periodic repetitions are monitored over time to indicate any changes or degradation in performance. A scanner scans a designated group of control-channel frequencies, selecting active channels for measurement of transmission parameters and detection of anomalous transmission characteristics on any particular channel.
    • 用于自动测试蜂窝电话设备的方法包括用于确定移动单元的地理位置的方法。 该系统包括位于例如高海拔处的监测站点,使得每个监测站点电子地覆盖包括几个蜂窝电话基站的地理区域。 通过在三个小区站点和/或监控站点的组合处比较信号接收时间和其他可观察信号参数来确定移动蜂窝站的位置,特别是放置紧急911呼叫的这些站的位置。 测试功能包括在分配给特定基站的频率上逐渐增加功率电平,以确定从该基站获取服务所需的功率电平。 随着时间的推移监视周期性重复,以指示任何更改或性能下降。 扫描仪扫描指定的一组控制信道频率,选择用于测量传输参数的有效信道和检测任何特定信道上的异常传输特性。
    • 6. 发明授权
    • Method and apparatus for geolocating a wireless communications device
    • 一种用于地理定位无线通信设备的方法和设备
    • US07256737B2
    • 2007-08-14
    • US11407314
    • 2006-04-19
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • Christopher J. HallClay S. TurnerJimmy C. Ray
    • G01S1/24G01S3/02
    • H04W64/00G01S5/0205G01S5/06H04M2207/18H04M2242/30
    • The time difference of arrival for a signal received at two or more receiving sites as transmitted from a wireless communications device, is determined by a frequency domain technique. The constituent frequencies of the signals received at the two or more receiving sites are determined, including the phase, or a value representative of the phase, of each frequency component. The phase values for the same frequency are subtracted to yield a phase difference values as a function of frequency. The slope of the function represents the time difference of arrival for the wireless communications device signal as received at the two receiving sites. To determine the mobile location based on the determined time difference of arrival values, a seed or initial location is first assumed for the wireless communications device and the distance difference of arrival (the time difference of arrival multiplied by the speed of light) is calculated. The calculated time difference of arrival is then used to adjust the distance difference of arrival by continuously iterating the position of the wireless communications device until the calculated distance of arrival and the calculated time difference of arrival (as multiplied by the speed of light) are within a predetermined margin.
    • 由无线通信设备发送的在两个或多个接收站点接收的信号的到达时间差由频域技术确定。 确定在两个或多个接收站点处接收的信号的组成频率,包括每个频率分量的相位或表示相位的值。 减去相同频率的相位值,以产生作为频率的函数的相位差值。 功能的斜率表示在两个接收站点接收到的无线通信设备信号的到达时间差。 为了基于所确定的到达值的时间差来确定移动位置,首先假设无线通信设备的种子或初始位置,并计算到达距离的差距(到达时间差乘以光的速度)。 计算出的到达时差随后用于通过连续迭代无线通信设备的位置来调整到达距离,直到计算的到达时间和计算的到达时间差值(乘以光速)在...之内 一个预定的余量。