USING OBJECT TO ALIGN AND CALIBRATE INERTIAL NAVIGATION SYSTEM
    5.
    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
    6.
    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
    9.
    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
    10.
    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。