Estimating an initial position and navigation state using vehicle odometry

    公开(公告)号:US09677887B2

    公开(公告)日:2017-06-13

    申请号:US14087743

    申请日:2013-11-22

    CPC classification number: G01C21/00 G01C21/20

    Abstract: The disclosure relates to estimating an initial position and navigation state associated with a vehicle using odometry and/or other data obtained from the vehicle to support dead reckoning at start-up. In particular, a last known position and last known heading at a first odometer value associated with the vehicle may be stored and compared to a current odometer value after linking a mobile device with the vehicle. The last known position and last known heading may be used to estimate the initial position and navigation state associated with the vehicle based on a difference between the compared odometer values. For example, the estimated initial position and/or navigation state may substantially correspond to the last known position and last known heading if the difference between the odometer values indicates no change, or a non-zero difference may define a radius to limit an estimated error associated with the initial position estimate.

    ESTIMATING AN INITIAL POSITION AND NAVIGATION STATE USING VEHICLE ODOMETRY
    2.
    发明申请
    ESTIMATING AN INITIAL POSITION AND NAVIGATION STATE USING VEHICLE ODOMETRY 有权
    使用车辆测距法估算初始位置和航行状态

    公开(公告)号:US20140288828A1

    公开(公告)日:2014-09-25

    申请号:US14087743

    申请日:2013-11-22

    CPC classification number: G01C21/00 G01C21/20

    Abstract: The disclosure relates to estimating an initial position and navigation state associated with a vehicle using odometry and/or other data obtained from the vehicle to support dead reckoning at start-up. In particular, a last known position and last known heading at a first odometer value associated with the vehicle may be stored and compared to a current odometer value after linking a mobile device with the vehicle. The last known position and last known heading may be used to estimate the initial position and navigation state associated with the vehicle based on a difference between the compared odometer values. For example, the estimated initial position and/or navigation state may substantially correspond to the last known position and last known heading if the difference between the odometer values indicates no change, or a non-zero difference may define a radius to limit an estimated error associated with the initial position estimate.

    Abstract translation: 本公开涉及使用测距仪和/或从车辆获得的其他数据来估计与车辆相关联的初始位置和导航状态,以支持在启动时的推算。 特别地,可以将与车辆相关联的第一里程计值的最后一个已知位置和最后一个已知航向存储并与移动设备与车辆连接之后与当前里程计值进行比较。 最后一个已知的位置和最后一个已知航向可以用于基于比较的里程计值之间的差异来估计与车辆相关联的初始位置和导航状态。 例如,估计的初始位置和/或导航状态可以基本上对应于最后一个已知位置和最后一个已知的航程,如果里程表值之间的差表示没有变化,或者非零差异可以限定半径以限制估计的误差 与初始位置估计相关联。

    CONTROLLING POSITION UNCERTAINTY IN A MOBILE DEVICE
    3.
    发明申请
    CONTROLLING POSITION UNCERTAINTY IN A MOBILE DEVICE 有权
    控制移动设备中的位置不确定性

    公开(公告)号:US20140288822A1

    公开(公告)日:2014-09-25

    申请号:US14087540

    申请日:2013-11-22

    Abstract: Systems and methods for constraining growth in position uncertainty of a mobile device are based on determination that the mobile device is in a pedestrian mode. Determination of the pedestrian mode is based on detection of steps by a pedometer, speed of motion of the mobile device, turn rate determination by a gyroscope, charging condition of the mobile device, availability of satellite signals, etc. Step counts and/or turn rate information are used to ascertain the distance that a pedestrian user may have traversed from a last known position, based on which growth of position uncertainty is controlled.

    Abstract translation: 用于约束移动设备的位置不确定性增长的系统和方法基于移动设备处于行人模式的确定。 行人模式的确定是基于计步器的步骤检测,移动设备的运动速度,陀螺仪的转速判定,移动设备的充电状态,卫星信号的可用性等。步数和/或转动 使用速率信息来确定行人用户可以从最后的已知位置穿过的距离,基于哪个位置不确定度的增长被控制。

    Low power positioning techniques for mobile devices

    公开(公告)号:US09733361B2

    公开(公告)日:2017-08-15

    申请号:US14480396

    申请日:2014-09-08

    CPC classification number: G01S19/34 G01S19/06 G01S19/24

    Abstract: Techniques for managing power consumption of a Global Navigation Satellite System (GNSS) receiver of a mobile device are provided. These techniques include a method that includes deriving a GNSS search window for the GNSS receiver based on a position uncertainty (PUNC) and a time uncertainty (TUNC), selecting a GNSS search mode based on the GNSS search window and resources available for searching for signals from GNSS satellite vehicles (SVs), wherein an estimated power consumption associated with execution of a GNSS search associated with the GNSS search mode does not exceed a power consumption limit specified for the GNSS receiver conducting the GNSS search using the GNSS search mode, and estimating a position of the mobile device.

    HEADING, VELOCITY, AND POSITION ESTIMATION WITH VEHICLE SENSORS, MOBILE DEVICE, AND GNSS INPUTS
    6.
    发明申请
    HEADING, VELOCITY, AND POSITION ESTIMATION WITH VEHICLE SENSORS, MOBILE DEVICE, AND GNSS INPUTS 有权
    车辆传感器,移动设备和GNSS输入的起飞,速度和位置估计

    公开(公告)号:US20140288825A1

    公开(公告)日:2014-09-25

    申请号:US14087797

    申请日:2013-11-22

    CPC classification number: G01C21/165 G01S5/0263 G01S19/40 G01S19/49

    Abstract: The disclosure generally relates to determining position of a motorized vehicle using wireless techniques. Methods, apparatus and systems are disclosed. A method can include: receiving absolute positioning data; receiving, from a mobile device, at least one of gyroscope data and odometry data; receiving, from a vehicle, at least one of gyroscope data and odometry data; initializing at least a heading to determine a relative path, wherein the relative path is based at least in part on the received data from the mobile device and the vehicle, wherein the received data comprises gyroscope data and odometry data; and shifting the relative path to an estimated path, wherein the estimated path is based at least in part on the absolute positioning data.

    Abstract translation: 本公开通常涉及使用无线技术来确定机动车辆的位置。 公开了方法,装置和系统。 一种方法可以包括:接收绝对定位数据; 从移动设备接收陀螺仪数据和测距数据中的至少一个; 从车辆接收陀螺仪数据和测距数据中的至少一个; 至少初始化标题以确定相对路径,其中所述相对路径至少部分地基于来自所述移动设备和所述车辆的所接收的数据,其中所接收的数据包括陀螺仪数据和测距数据; 以及将所述相对路径移动到估计路径,其中所述估计路径至少部分地基于所述绝对定位数据。

    Arm swing compensation techniques

    公开(公告)号:US10921342B2

    公开(公告)日:2021-02-16

    申请号:US14842349

    申请日:2015-09-01

    Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses in a mobile GNSS device to compensate for arm swing. An example of an method for compensating for arm swing according to the disclosure includes determining an arm swing signal, such that the arm swing signal is approximately sinusoidal with a period of approximately T seconds, determining a position signal measurement period, receiving a plurality of positioning signals at intervals corresponding to the position signal measurement period, and determining current position information based on the plurality of positioning signals.

    METHODS AND SYSTEMS FOR MOBILE DEVICE CLOCK MANAGEMENT
    8.
    发明申请
    METHODS AND SYSTEMS FOR MOBILE DEVICE CLOCK MANAGEMENT 审中-公开
    移动设备时钟管理的方法和系统

    公开(公告)号:US20150123844A1

    公开(公告)日:2015-05-07

    申请号:US14503185

    申请日:2014-09-30

    Abstract: Disclosed are methods, systems and/or devices to calibrate a network time by acquisition of satellite positioning system (SPS) signals and different instances of time, and time-tagging SPS times according to the network time. In particular, the network time may be calibrated based, at least in part, on a first difference between first and second SPS times obtained at two SPS position fixes and a second difference between corresponding first and second time stamps.

    Abstract translation: 公开了通过采集卫星定位系统(SPS)信号和不同的时间实例来校准网络时间的方法,系统和/或设备,以及根据网络时间的时间标签SPS时间。 特别地,可以至少部分地基于在两个SPS位置固定处获得的第一和第二SPS时间之间的第一差异和相应的第一和第二时间戳之间的第二差异来校准网络时间。

    Heading, velocity, and position estimation with vehicle sensors, mobile device, and GNSS inputs
    10.
    发明授权
    Heading, velocity, and position estimation with vehicle sensors, mobile device, and GNSS inputs 有权
    车辆传感器,移动设备和GNSS输入的标题,速度和位置估计

    公开(公告)号:US09250083B2

    公开(公告)日:2016-02-02

    申请号:US14087797

    申请日:2013-11-22

    CPC classification number: G01C21/165 G01S5/0263 G01S19/40 G01S19/49

    Abstract: The disclosure generally relates to determining position of a motorized vehicle using wireless techniques. Methods, apparatus and systems are disclosed. A method can include: receiving absolute positioning data; receiving, from a mobile device, at least one of gyroscope data and odometry data; receiving, from a vehicle, at least one of gyroscope data and odometry data; initializing at least a heading to determine a relative path, wherein the relative path is based at least in part on the received data from the mobile device and the vehicle, wherein the received data comprises gyroscope data and odometry data; and shifting the relative path to an estimated path, wherein the estimated path is based at least in part on the absolute positioning data.

    Abstract translation: 本公开一般涉及使用无线技术来确定机动车辆的位置。 公开了方法,装置和系统。 一种方法可以包括:接收绝对定位数据; 从移动设备接收陀螺仪数据和测距数据中的至少一个; 从车辆接收陀螺仪数据和测距数据中的至少一个; 至少初始化标题以确定相对路径,其中所述相对路径至少部分地基于来自所述移动设备和所述车辆的所接收的数据,其中所接收的数据包括陀螺仪数据和测距数据; 以及将所述相对路径移动到估计路径,其中所述估计路径至少部分地基于所述绝对定位数据。

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