USING OBJECT TO ALIGN AND CALIBRATE INERTIAL NAVIGATION SYSTEM
    3.
    发明申请
    USING OBJECT TO ALIGN AND CALIBRATE INERTIAL NAVIGATION SYSTEM 有权
    使用对象对齐和校准惯性导航系统

    公开(公告)号:US20110178708A1

    公开(公告)日:2011-07-21

    申请号:US12689085

    申请日:2010-01-18

    IPC分类号: G01C21/16 G06K7/00

    摘要: The initialization of an inertial navigation system is performed using information obtained from an image of an object. Positional and orientational information about the object in a global reference frame and positional and orientational information about the camera relative to the object are obtained from the image. Positional and orientational information for the camera in the global reference frame is determined along with a transformation matrix between inertial sensor reference frame and a navigation coordinate frame. The inertial navigation system is initialized using the positional and orientational information for the camera, the transformation matrix and the velocity of the camera when the object was imaged, i.e., zero. Using the initialized data with measurements from the inertial sensors the position of the mobile platform may be updated during navigation and provided, e.g., on a digital map. Inertial navigation errors may be corrected using information obtained from images of different objects.

    摘要翻译: 使用从对象的图像获得的信息来执行惯性导航系统的初始化。 从图像中获得关于全局参考帧中的对象的位置和取向信息以及关于相机相对于对象的位置和取向信息。 全局参考帧中相机的位置和方位信息与惯性传感器参考系和导航坐标系之间的变换矩阵一起确定。 惯性导航系统使用摄像机的位置和方位信息,变换矩阵和摄像机成像时的摄像机速度(即零)进行初始化。 使用来自惯性传感器的测量的初始化数据,可以在导航期间更新移动平台的位置,并且例如在数字地图上提供。 可以使用从不同对象的图像获得的信息来校正惯性导航错误。

    Advanced power management for satellite positioning system
    4.
    发明授权
    Advanced power management for satellite positioning system 失效
    卫星定位系统先进电源管理

    公开(公告)号:US07573422B2

    公开(公告)日:2009-08-11

    申请号:US10489525

    申请日:2002-09-14

    IPC分类号: G01S5/14 H04B1/16 G06F1/32

    CPC分类号: G01S19/34

    摘要: A power management system for managing power in a wireless device having a SPS receiver, communication device and a power source, the power management is described. The power management system may include a real-time clock, an input/output device, a radio frequency front-end and a SPS engine in signal communication with the real-time clock, input/output device and radio frequency front-end, the SPS engine capable of powering down itself, the input/output device and radio frequency front-end in response to determining a mode of operation.

    摘要翻译: 一种用于在具有SPS接收机,通信设备和电源的无线设备中管理电力的电源管理系统,描述了电源管理。 电源管理系统可以包括与实时时钟,输入/输出设备和射频前端进行信号通信的实时时钟,输入/输出设备,射频前端和SPS引擎, 响应于确定操作模式,能够自己断电的SPS引擎,输入/输出设备和射频前端。

    Satellite Clock Prediction
    6.
    发明申请
    Satellite Clock Prediction 有权
    卫星时钟预测

    公开(公告)号:US20080238765A1

    公开(公告)日:2008-10-02

    申请号:US11694430

    申请日:2007-03-30

    IPC分类号: G01S1/00 H04B7/185

    摘要: Devices and methods are described for determining position information without broadcast ephemeris data for a spanned time period using predictions of future satellite states. These predictions include predictions of satellite clock bias. During the spanned time period, broadcast ephemeris is received such that a broadcast-ephemeris-derived satellite clock bias may be determined. The predictions of satellite clock bias subsequent to the receipt of the broadcast ephemeris may then be corrected based upon the broadcast-ephemeris-derived satellite clock bias.

    摘要翻译: 描述了用于使用对未来卫星状态的预测来确定跨越时间段的广播星历数据的位置信息的装置和方法。 这些预测包括对卫星时钟偏差的预测。 在跨越的时间段期间,接收广播星历,使得可以确定广播 - 星历衍生的卫星时钟偏差。 然后可以基于广播 - 星历衍生的卫星时钟偏差来校正在接收广播星历之后的卫星时钟偏差的预测。

    Using object to align and calibrate inertial navigation system
    7.
    发明授权
    Using object to align and calibrate inertial navigation system 有权
    使用对象来对齐和校准惯性导航系统

    公开(公告)号:US08855929B2

    公开(公告)日:2014-10-07

    申请号:US12689085

    申请日:2010-01-18

    摘要: The initialization of an inertial navigation system is performed using information obtained from an image of an object. Positional and orientational information about the object in a global reference frame and positional and orientational information about the camera relative to the object are obtained from the image. Positional and orientational information for the camera in the global reference frame is determined along with a transformation matrix between inertial sensor reference frame and a navigation coordinate frame. The inertial navigation system is initialized using the positional and orientational information for the camera, the transformation matrix and the velocity of the camera when the object was imaged, i.e., zero. Using the initialized data with measurements from the inertial sensors the position of the mobile platform may be updated during navigation and provided, e.g., on a digital map. Inertial navigation errors may be corrected using information obtained from images of different objects.

    摘要翻译: 使用从对象的图像获得的信息来执行惯性导航系统的初始化。 从图像中获得关于全局参考帧中的对象的位置和取向信息以及关于相机相对于对象的位置和取向信息。 全局参考帧中相机的位置和方位信息与惯性传感器参考系和导航坐标系之间的变换矩阵一起确定。 惯性导航系统使用摄像机的位置和方位信息,变换矩阵和摄像机成像时的摄像机速度(即零)进行初始化。 使用来自惯性传感器的测量的初始化数据,可以在导航期间更新移动平台的位置,并且例如在数字地图上提供。 可以使用从不同对象的图像获得的信息来校正惯性导航错误。

    Camera-based inertial sensor alignment for PND
    8.
    发明授权
    Camera-based inertial sensor alignment for PND 有权
    基于摄像机的惯性传感器对准PND

    公开(公告)号:US09160980B2

    公开(公告)日:2015-10-13

    申请号:US13173261

    申请日:2011-06-30

    申请人: Lionel J. Garin

    发明人: Lionel J. Garin

    摘要: An apparatus and method to enhance dead-reckoning navigation using inertial sensor measurements based on images from a camera are disclosed. A camera build into a mobile device is used to calibrate inertial sensors and rotation matrices. Images from a camera may be used (1) to remove a gravitational element from accelerometer measurements; (2) to set a scaling factor and an offset for a gyrometer; and (3) to set initial and updated values for rotation matrices.

    摘要翻译: 公开了一种使用基于来自相机的图像的惯性传感器测量来增强航位推算导航的装置和方法。 建立在移动设备中的相机用于校准惯性传感器和旋转矩阵。 可以使用相机的图像(1)从加速度计测量中去除重力元素; (2)设置陀螺仪的比例因子和偏移量; 和(3)设置旋转矩阵的初始值和更新值。

    Satellite based positioning method and system for coarse location positioning
    9.
    发明授权
    Satellite based positioning method and system for coarse location positioning 有权
    基于卫星定位方法和系统,用于粗定位

    公开(公告)号:US08260548B2

    公开(公告)日:2012-09-04

    申请号:US12847471

    申请日:2010-07-30

    IPC分类号: G01C21/00

    摘要: A satellite based positioning method and system including storing satellite sub-almanac data on a mobile station. Embodiments include using the sub-almanac data to take measurements and calculate a coarse position of the mobile station. Embodiments further include a location server calculating a correction to the coarse position, and the location server determining whether any sub-almanacs used to calculate the coarse position require replacement.

    摘要翻译: 一种基于卫星的定位方法和系统,包括在移动台上存储卫星子历史数据。 实施例包括使用子历书数据进行测量并计算移动站的粗略位置。 实施例还包括计算对粗略位置的校正的位置服务器,并且位置服务器确定用于计算粗略位置的任何子日历是否需要更换。

    Determining position without use of broadcast ephemeris information
    10.
    发明授权
    Determining position without use of broadcast ephemeris information 有权
    确定位置而不使用广播星历信息

    公开(公告)号:US07142157B2

    公开(公告)日:2006-11-28

    申请号:US10941251

    申请日:2004-09-14

    IPC分类号: H04B7/185 G01S5/02

    摘要: Devices and methods are described for determining position information without broadcast ephemeris data for extended time periods. A server or client device receives or collects historical state data of satellites of a satellite-based positioning system and generates predictions of future satellite trajectories for future time periods. When a server generates the predictions, the predictions are subsequently transferred to a client device. The client device selects predictions appropriate to time of interest. The time can be any time during a period of at least seven calendar days. The client device reconstructs satellite states using information on the predictions and uses the reconstructed satellite states to acquire satellite signals as appropriate to the current location and time of the client device. The client device determines and/or tracks its position using information of the satellite states and timing information of the satellite signals.

    摘要翻译: 描述了用于确定位置信息而不延长时间段的广播星历数据的装置和方法。 服务器或客户端设备接收或收集基于卫星的定位系统的卫星的历史状态数据,并且对将来的时间段的未来卫星轨迹产生预测。 当服务器生成预测时,预测将随后传送到客户端设备。 客户端设备选择适合于感兴趣时间的预测。 时间可以是至少七个日历日的任何时间。 客户端设备使用关于预测的信息来重构卫星状态,并且使用重建的卫星状态来适当地获取与客户端设备的当前位置和时间相关的卫星信号。 客户端设备使用卫星信号的信息和卫星信号的定时信息确定和/或跟踪其位置。