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    • 2. 发明授权
    • Accurate magnetic compass in mobile electronic device
    • 移动电子设备中精确的磁罗盘
    • US08880373B2
    • 2014-11-04
    • US12612529
    • 2009-11-04
    • Victor KulikChristopher Brunner
    • Victor KulikChristopher Brunner
    • G01C17/38
    • G01C17/38
    • Methods and apparatus are described herein for calibration and correction of non-constant sensor errors, and in particular non-constant compass errors, that are based in part on changing software and hardware modes of a host device. The non-constant errors induced in the sensor by each mode and combination of modes is determined in a calibration that may be determined during pre-production testing of one or more host devices. The calibration results can be incorporated into software and/or hardware of the host device. During normal operation, a sensor correction can be applied to sensor measurements based in part on the active mode or combination of modes.
    • 这里描述了用于校准和校正非恒定传感器误差,特别是非恒定罗盘误差的方法和装置,其部分基于改变主机设备的软件和硬件模式。 通过每种模式和模式组合在传感器中感应的非常数误差在可以在一个或多个主机设备的预生产测试期间确定的校准中确定。 校准结果可以并入主机设备的软件和/或硬件中。 在正常操作期间,传感器校正可以部分地基于活动模式或模式组合来应用于传感器测量。
    • 3. 发明授权
    • Calibrating multi-dimensional sensor for offset, sensitivity, and non-orthogonality
    • 校准多维传感器,用于偏移,灵敏度和非正交性
    • US08645093B2
    • 2014-02-04
    • US12612563
    • 2009-11-04
    • Christopher Brunner
    • Christopher Brunner
    • G01D3/02G01S3/74G01R33/025
    • G06F3/0346G01R33/0035G01R33/0206G06F3/038
    • A multi-dimensional sensor, a magnetometer or accelerometer, is calibrated based on the raw data provided by the sensor. Raw data is collected and may be used to generate ellipse or ellipsoid parameters, for a two-dimensional or three-dimensional sensor, respectively. An offset calibration factor is calculated based on the raw data, e.g., the determined ellipse or ellipsoid parameters. A sensitivity calibration factor is then calculated based on the offset calibration factor and the raw data. A non-orthogonality calibration factor can then be calculated based on the calculated offset and sensitivity calibration factors. Using the offset, sensitivity and non-orthogonality calibration factors, the raw data can be corrected to produce calibrated data.
    • 基于由传感器提供的原始数据来校准多维传感器,磁力计或加速度计。 收集原始数据,并分别用于生成二维或三维传感器的椭圆或椭圆参数。 基于原始数据,例如确定的椭圆或椭圆参数来计算偏移校准因子。 然后基于偏移校准因子和原始数据计算灵敏度校准因子。 然后可以基于计算的偏移和灵敏度校准因子来计算非正交性校准因子。 使用偏移,灵敏度和非正交性校准因子,可以校正原始数据以产生校准数据。
    • 7. 发明申请
    • POSITION DETERMINATION USING A WIRELESS SIGNAL
    • 使用无线信号的位置确定
    • US20110117924A1
    • 2011-05-19
    • US12621310
    • 2009-11-18
    • Christopher BrunnerVictor Kulik
    • Christopher BrunnerVictor Kulik
    • H04W24/00
    • H04W4/023G01S5/0242G01S5/0252G01S19/47G01S19/48H04W4/026H04W4/027H04W24/08
    • A mobile station determines its position using measured parameters of a wireless signal to improve a satellite positioning system (SPS) enhanced dead reckoning based position estimate. The mobile station uses SPS enhanced dead reckoning to estimate a current position. The mobile station receives wireless signals and measures, e.g., received signal strength and/or round trip time, which is compared to a database to derive a wireless signal based position estimate. The SPS enhanced dead reckoning position estimate and the wireless signal based position estimate may then be fused using corresponding confidence levels. The database may be generated and stored in the mobile station. In another embodiment, the database is generated and stored on an online server that may be accessed by mobile stations.
    • 移动台使用无线信号的测量参数来确定其位置,以改进基于位置估计的卫星定位系统(SPS)增强航位推算。 移动台使用SPS增强航位推算来估计当前位置。 移动站接收无线信号并测量例如接收的信号强度和/或往返时间,其与数据库进行比较以导出基于无线信号的位置估计。 SPS增强航位推算位置估计,然后可以使用相应的置信水平来融合基于无线信号的位置估计。 可以生成数据库并将其存储在移动站中。 在另一个实施例中,数据库被生成并存储在可被移动站访问的在线服务器上。