METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION
    1.
    发明申请
    METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION 有权
    用于定位SPS扩展信息的位置确定方法和装置

    公开(公告)号:US20090315772A1

    公开(公告)日:2009-12-24

    申请号:US12366546

    申请日:2009-02-05

    IPC分类号: G01S1/00

    摘要: A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data.

    摘要翻译: 用于协助移动台定位卫星的方法和系统使用有效的消息格式。 服务器计算卫星的粗略轨道数据和卫星的精确轨道数据之间的校正。 选择坐标系,使得校正的变化在一段时间内基本上是平滑的。 服务器通过数学功能进一步近似校正,以减少传输到移动台所需的比特数。 移动台在接收到系数时,使用系数和适用时间(例如当前时间)评估数学函数,将评估结果转换为标准坐标系,并将转换结果应用于粗略轨道数据 获取精确的轨道数据。

    Method and apparatus for position determination with extended SPS orbit information
    3.
    发明授权
    Method and apparatus for position determination with extended SPS orbit information 有权
    用扩展SPS轨道信息进行位置确定的方法和装置

    公开(公告)号:US08319684B2

    公开(公告)日:2012-11-27

    申请号:US12366546

    申请日:2009-02-05

    IPC分类号: G01S19/27 G01S19/05

    摘要: A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data.

    摘要翻译: 用于协助移动台定位卫星的方法和系统使用有效的消息格式。 服务器计算卫星的粗略轨道数据和卫星的精确轨道数据之间的校正。 选择坐标系,使得校正的变化在一段时间内基本上是平滑的。 服务器通过数学功能进一步近似校正,以减少传输到移动台所需的比特数。 移动台在接收到系数时,使用系数和适用时间(例如当前时间)评估数学函数,将评估结果转换为标准坐标系,并将转换结果应用于粗略轨道数据 获取精确的轨道数据。

    Method and apparatus for position determination with extended SPS orbit information
    4.
    发明授权
    Method and apparatus for position determination with extended SPS orbit information 有权
    用扩展SPS轨道信息进行位置确定的方法和装置

    公开(公告)号:US09019157B2

    公开(公告)日:2015-04-28

    申请号:US13571161

    申请日:2012-08-09

    IPC分类号: G01S19/05 G01S19/27 G01S19/25

    摘要: A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data.

    摘要翻译: 用于协助移动台定位卫星的方法和系统使用有效的消息格式。 服务器计算卫星的粗略轨道数据和卫星的精确轨道数据之间的校正。 选择坐标系,使得校正的变化在一段时间内基本上是平滑的。 服务器通过数学功能进一步近似校正,以减少传输到移动台所需的比特数。 移动台在接收到系数时,使用系数和适用时间(例如当前时间)评估数学函数,将评估结果转换为标准坐标系,并将转换结果应用于粗略轨道数据 获取精确的轨道数据。

    In flight detection
    8.
    发明授权
    In flight detection 有权
    在飞行检测

    公开(公告)号:US08380458B2

    公开(公告)日:2013-02-19

    申请号:US12727050

    申请日:2010-03-18

    IPC分类号: G01P15/00 G01C17/38 H04M11/04

    摘要: An apparatus and method for detecting whether a mobile device is in flight based on sensor measurements from a 3-dimensional accelerometer are presented. For example, embodiments estimate a direction of gravity and non-gravity acceleration, separate this non-gravity acceleration into a vertical and horizontal components, then test the estimated accelerations to determine whether the mobile device is experiencing sufficient vertical acceleration to warrant an in-flight determination.

    摘要翻译: 提出了一种基于来自三维加速度计的传感器测量来检测移动设备是否在飞行中的装置和方法。 例如,实施例估计重力方向和非重力加速度,将该非重力加速度分离为垂直和水平分量,然后测试估计的加速度,以确定移动设备是否正在经历足够的垂直加速以保证飞行中 决心。

    SENSOR ORIENTATION MEASUREMENT WITH RESPECT TO PEDESTRIAN MOTION DIRECTION
    9.
    发明申请
    SENSOR ORIENTATION MEASUREMENT WITH RESPECT TO PEDESTRIAN MOTION DIRECTION 审中-公开
    传感器方位测量与PEDESTRIAN运动方向

    公开(公告)号:US20120296603A1

    公开(公告)日:2012-11-22

    申请号:US13108789

    申请日:2011-05-16

    IPC分类号: G01C22/00 G06F15/00

    CPC分类号: G01C21/16 G01C22/006

    摘要: Systems and methods are described for measuring orientation of sensors associated with a mobile device with respect to pedestrian motion of a user of the mobile device. An example technique described herein includes obtaining acceleration information associated with the mobile device, partitioning the acceleration information according to respective detected pedestrian steps of the user, identifying a forward motion direction of the user of the mobile device based on the acceleration information and the detected pedestrian steps, and computing a misalignment angle between the forward motion direction of the user of the mobile device and an orientation of the mobile device.

    摘要翻译: 描述了用于测量与移动设备相关联的传感器相对于移动设备的用户的行人运动的定向的系统和方法。 本文所述的示例技术包括获得与移动设备相关联的加速度信息,根据用户的各个检测到的行人步骤划分加速度信息,基于加速度信息识别移动设备的用户的向前运动方向,并且检测到的行人 步骤,以及计算移动设备的用户的前进方向与移动设备的方位之间的未对准角度。

    Method and device for reducing cross-correlation false alarms in CDMA and other wireless networks
    10.
    发明授权
    Method and device for reducing cross-correlation false alarms in CDMA and other wireless networks 有权
    用于减少CDMA和其他无线网络中互相关误差的方法和装置

    公开(公告)号:US07792225B2

    公开(公告)日:2010-09-07

    申请号:US11564772

    申请日:2006-11-29

    CPC分类号: H04B1/7077

    摘要: A method and device for combating cross-correlation false alarms by introducing code diversity in the correlation process in which the search code may be diversified by the use of code staggering and/or code scrambling. The energy levels of the signals before and after the search code have been diversified may be evaluated to detect a false alarm. In addition, a set of parameterized analytical models may be used to estimate the rate of false alarms from cross-correlation in wireless networks in order to guide development and design of wireless transceivers.

    摘要翻译: 一种用于通过在相关处理中引入代码分集来克服互相关误差警报的方法和装置,其中通过使用代码交错和/或代码加扰可以使搜索码多样化。 搜索码之前和之后的信号的能级已经多样化可以被评估以检测到一个虚警。 此外,可以使用一组参数化分析模型来估计无线网络中互相关的误报率,以指导无线收发器的开发和设计。