Method and Apparatus for Performing Frequency Synchronization
    11.
    发明申请
    Method and Apparatus for Performing Frequency Synchronization 有权
    执行频率同步的方法和装置

    公开(公告)号:US20130279541A1

    公开(公告)日:2013-10-24

    申请号:US13925538

    申请日:2013-06-24

    IPC分类号: G01S19/24

    摘要: A method and apparatus for performing frequency analysis of sub-epoch correlations to estimate an unknown frequency of a received signal is provided. The method includes forming a sequence of correlation values from a plurality of correlations performed over a period less than a repeating period of a code, and analyzing the sequence of correlation values to estimate the frequency that is used to receive a signal comprising the code.

    摘要翻译: 提供了一种用于执行子时期相关性的频率分析以估计接收信号的未知频率的方法和装置。 该方法包括从小于代码的重复周期的周期中执行的多个相关中形成相关值序列,以及分析相关值序列以估计用于接收包括代码的信号的频率。

    METHOD AND APPARATUS FOR LOCATING POSITION OF A SATELLITE SIGNAL RECEIVER
    12.
    发明申请
    METHOD AND APPARATUS FOR LOCATING POSITION OF A SATELLITE SIGNAL RECEIVER 有权
    用于定位卫星信号接收机的位置的方法和装置

    公开(公告)号:US20040257277A1

    公开(公告)日:2004-12-23

    申请号:US10464069

    申请日:2003-06-17

    IPC分类号: G01S005/14

    摘要: A method and apparatus for locating position of a satellite signal receiver is described. In one example, groups of pseudoranges from the satellite signal receiver to a plurality of satellites are determined at a respective plurality of times. The groups of pseudoranges are transmitted to a server, where a position of the satellite signal receiver may be determined using the groups of pseudoranges. In another example, a plurality of groups of pseudoranges are applied to a time-based filter located in the server. The position of the satellite signal receiver is derived from the time-based filter.

    摘要翻译: 描述了一种用于定位卫星信号接收机的位置的方法和装置。 在一个示例中,从多个卫星确定从卫星信号接收机到多个卫星的伪距组。 伪距组被发送到服务器,其中可以使用伪距组来确定卫星信号接收机的位置。 在另一示例中,多个伪距组被应用于位于服务器中的基于时间的过滤器。 卫星信号接收机的位置来自基于时间的滤波器。

    Method and apparatus for adjusting reference oscillator frequency in a mobile wireless device
    13.
    发明申请
    Method and apparatus for adjusting reference oscillator frequency in a mobile wireless device 失效
    用于在移动无线设备中调整参考振荡器频率的方法和装置

    公开(公告)号:US20040142701A1

    公开(公告)日:2004-07-22

    申请号:US10345604

    申请日:2003-01-16

    发明人: Charles Abraham

    IPC分类号: H04B001/18 H04B001/26

    摘要: A method and apparatus for using a conventional oscillator in a cellular telephone transceiver as a source of a reference signal for a GPS receiver. In one embodiment, the method comprises using a voltage-controlled oscillator (nullVCXOnull) within a cellular telephone transceiver to generate a reference frequency signal for the GPS receiver. Circuitry within the telephone transceiver generates a frequency error signal. Both of these signals are coupled to GPS circuitry and used to control a carrier numerically controlled oscillator (nullNCOnull) and a code NCO. The NCOs produce a tuning signal and a timing signal, respectively. The GPS circuitry uses the NCO generated signals to process GPS signals.

    摘要翻译: 一种在蜂窝电话收发机中使用常规振荡器作为GPS接收机的参考信号源的方法和装置。 在一个实施例中,该方法包括在蜂窝电话收发器内使用压控振荡器(“VCXO”)来产生用于GPS接收器的参考频率信号。 电话收发器内的电路产生频率误差信号。 这两个信号耦合到GPS电路并用于控制载波数控振荡器(“NCO”)和代码NCO。 NCO分别产生调谐信号和定时信号。 GPS电路使用NCO生成的信号来处理GPS信号。

    Method and apparatus for providing location based information
    14.
    发明申请
    Method and apparatus for providing location based information 审中-公开
    用于提供基于位置的信息的方法和装置

    公开(公告)号:US20020137523A1

    公开(公告)日:2002-09-26

    申请号:US09813639

    申请日:2001-03-21

    IPC分类号: H04Q007/20

    CPC分类号: H04W4/029 G06F16/9537

    摘要: A method and apparatus for providing location-based information using a wireless communications system is disclosed. In one embodiment, a message is received from a wireless device containing a request for location-based information. Upon receipt of the message, the location of the wireless device is determined, location-based information is retrieved for the determined location and the location-based information is transmitted to the wireless device.

    摘要翻译: 公开了一种使用无线通信系统提供基于位置的信息的方法和装置。 在一个实施例中,从包含基于位置的信息的请求的无线设备接收消息。 在接收到消息时,确定无线设备的位置,为所确定的位置检索基于位置的信息,并将基于位置的信息发送到无线设备。

    METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A SATELLITE SIGNAL RECEIVER
    15.
    发明申请
    METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A SATELLITE SIGNAL RECEIVER 审中-公开
    减少卫星信号接收机干扰的方法和装置

    公开(公告)号:US20140017993A1

    公开(公告)日:2014-01-16

    申请号:US14035032

    申请日:2013-09-24

    发明人: Charles ABRAHAM

    IPC分类号: H04B7/185

    摘要: A method and apparatus for mitigating interference in a satellite signal receiver is described. The satellite signal receiver receives satellite signals from a plurality of satellites. In one example a control signal is transmitted to the satellite signal receiver upon occurrence of data transmission from a wireless transceiver operating in proximity to the satellite signal receiver. Signal integration within the satellite signal receiver is gated in response to the control signal In another example, one or more values of satellite signal samples are selected from a plurality of possible values. Signal integration within the satellite signal receiver is gated in response to a percentage of satellite signal samples taken over a predefined period exceeding a predefined threshold. In yet another example, a gain setting of an automatic gain control circuit within the satellite signal receiver is adjusted in response to detection of interference.

    摘要翻译: 描述了用于减轻卫星信号接收机中的干扰的方法和装置。 卫星信号接收机从多个卫星接收卫星信号。 在一个示例中,当从邻近卫星信号接收机工作的无线收发器发生数据传输时,控制信号被发送到卫星信号接收机。 卫星信号接收机中的信号积分响应于控制信号选通。在另一示例中,从多个可能值中选择一个或多个卫星信号样本值。 卫星信号接收机内的信号积分响应于在超过预定义阈值的预定义周期内拍摄的卫星信号样本的百分比来选通。 在另一示例中,响应于干扰的检测来调整卫星信号接收机内的自动增益控制电路的增益设置。

    Method and Apparatus for Locating Mobile Receivers Using a Wide Area Reference Network for Propagating Ephemeris
    16.
    发明申请
    Method and Apparatus for Locating Mobile Receivers Using a Wide Area Reference Network for Propagating Ephemeris 有权
    使用广域参考网络定位移动接收机传播星历的方法和装置

    公开(公告)号:US20130234888A1

    公开(公告)日:2013-09-12

    申请号:US13868669

    申请日:2013-04-23

    IPC分类号: G01S19/28

    摘要: A method and apparatus for distribution and delivery of global positioning system (GPS) satellite telemetry data using a communication link between a central site and a mobile GPS receiver. The central site is coupled to a network of reference satellite receivers that send telemetry data from all satellites to the central site. The mobile GPS receiver uses the delivered telemetry data to aid its acquisition of the GPS satellite signal. The availability of the satellite telemetry data enhances the mobile receiver's signal reception sensitivity.

    摘要翻译: 一种用于使用中心站点和移动GPS接收机之间的通信链路来分发和传送全球定位系统(GPS)卫星遥测数据的方法和装置。 中心站点耦合到从所有卫星发送遥测数据到中心站点的参考卫星接收机网络。 移动GPS接收机使用传送的遥测数据来帮助其获取GPS卫星信号。 卫星遥测数据的可用性增强了移动接收机的信号接收灵敏度。

    Method and apparatus for using long term satellite tracking data in a remote receiver
    17.
    发明申请
    Method and apparatus for using long term satellite tracking data in a remote receiver 有权
    在远程接收机中使用长期卫星跟踪数据的方法和装置

    公开(公告)号:US20040117114A1

    公开(公告)日:2004-06-17

    申请号:US10674267

    申请日:2003-09-29

    IPC分类号: G01C021/36

    CPC分类号: G01S19/27

    摘要: Method and apparatus for using long term satellite tracking data in a remote receiver is described. In one example, long term satellite tracking data is received at a remote receiver from a server. The long term satellite tracking data is used to compute acquisition assistance data in the remote receiver. The remote receiver then uses the acquisition assistance data to acquire satellite signals. The acquired satellite signals may be used to locate position of the remote receiver.

    摘要翻译: 描述了在远程接收机中使用长期卫星跟踪数据的方法和装置。 在一个示例中,在远程接收器处从服务器接收长期卫星跟踪数据。 长期卫星跟踪数据用于计算远程接收机中的采集辅助数据。 远程接收器然后使用采集辅助数据来获取卫星信号。 所获取的卫星信号可用于定位远程接收机的位置。

    Method and apparatus for performing timing synchronization
    19.
    发明申请
    Method and apparatus for performing timing synchronization 有权
    用于执行定时同步的方法和装置

    公开(公告)号:US20030154025A1

    公开(公告)日:2003-08-14

    申请号:US10338134

    申请日:2003-01-07

    IPC分类号: G01C021/00

    摘要: A method and apparatus for performing timing synchronization in a mobile device. The method and apparatus include a wireless transceiver having a first oscillatory signal generator (OSG) and a Global Position System (GPS) receiver. The GPS receiver includes a second oscillatory signal generator coupled to a counter for receiving a first clock signal from the first OSG and a second clock signal from the second OSG. Additionally, a GPS signal processor is coupled to the counter. The counter provides a relative offset signal between the first and second oscillatory signal generators to the GPS signal processor for adjusting a pseudo-range model.

    摘要翻译: 一种用于在移动设备中执行定时同步的方法和装置。 该方法和装置包括具有第一振荡信号发生器(OSG)和全球定位系统(GPS)接收机的无线收发器。 GPS接收机包括耦合到计数器的第二振荡信号发生器,用于从第一OSG接收第一时钟信号和来自第二OSG的第二时钟信号。 另外,GPS信号处理器耦合到计数器。 计数器提供第一和第二振荡信号发生器之间的相对偏移信号到GPS信号处理器,用于调整伪距离模型。

    Method and apparatus for computing signal correlation
    20.
    发明申请
    Method and apparatus for computing signal correlation 有权
    用于计算信号相关的方法和装置

    公开(公告)号:US20020172266A1

    公开(公告)日:2002-11-21

    申请号:US09861086

    申请日:2001-05-18

    IPC分类号: H04K001/00

    摘要: A method and apparatus for computing a convolution between an input GPS signal and a C/A code reference by generating the convolution result in real time without storing unprocessed signal samples. The apparatus comprises a vector multiplier running at high speed to achieve the same result as a vector multiplier sized to process an entire epoch.

    摘要翻译: 一种用于通过在不存储未处理的信号样本的情况下实时产生卷积结果来计算输入GPS信号和C / A码参考之间的卷积的方法和装置。 该装置包括以高速运行的矢量乘法器,以实现与负载处理整个历元的矢量乘法器相同的结果。