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    • 73. 发明申请
    • MOTION TRACKING SYSTEM AND METHOD
    • 运动跟踪系统和方法
    • WO2004015369A9
    • 2004-09-16
    • PCT/US0325194
    • 2003-08-11
    • INTERSENSE INCFOXLIN ERIC
    • FOXLIN ERIC
    • G01C21/00G01C21/16G01S19/11G01S19/48
    • G01C21/16G01C25/005
    • A navigation or motion tracking system includes components associated with particular sensors, which are decoupled from a tracking component that takes advantage of information in the sensor measurements. The architecture of this system enables development of sensor-specific components independently of the tracking component, and enables sensors and their associated components to be added or removed without having to re-implement the tracking component. In a software implementation of the system, sensor-specific software components may be dynamically incorporated into the system and the tracking component is then automatically configured to take advantage of measurements from the corresponding sensors without having to modify the tracking component.
    • 导航或运动跟踪系统包括与特定传感器相关联的部件,所述特定传感器与利用传感器测量中的信息的跟踪部件分离。 该系统的体系结构能够独立于追踪组件开发传感器特定组件,并且使传感器及其相关组件能够被添加或移除而不必重新实现追踪组件。 在系统的软件实现中,传感器专用软件组件可以被动态地合并到系统中,并且跟踪组件然后被自动配置为利用来自相应传感器的测量而不必修改跟踪组件。
    • 76. 发明申请
    • METHOD AND APPARATUS FOR IMPROVING RADIO LOCATION ACCURACY
    • 提高无线电定位精度的方法和设备
    • WO2004036240A3
    • 2004-06-03
    • PCT/US0333124
    • 2003-10-17
    • QUALCOMM INC
    • SHEYNBLAT LEONID
    • G01S1/00G01S5/02G01S19/09G01S19/12G01S19/23G01S19/34G01S19/46G01S19/48H04W64/00G01S5/14H04Q7/38
    • H04W4/025G01S5/0263G01S19/46G01S19/48H04W64/00
    • A method and apparatus to utilize a set of measurements (either partial or compete) to improve the accuracy of an initial position estimate for a wireless terminal. The initial position estimate for the terminal is first obtained (e.g., based on a cell-ID or an enhanced cell-ID solution). Measurements are obtained for the terminal. The initial position estimate is then updated with the measurements to obtain a revised position estimate for the terminal. The updating may be performed by (1) deriving a measurement vector based on the initial position estimate and the measurements, (2) forming an observation matrix for the measurements, (3) determining a matrix of weights, (4) deriving a correction vector based on the measurement vector, the observation matrix, and the weight matrix, and (5) updating the initial position estimate with the correction vector.
    • 一种利用一组测量(部分或竞争)来提高无线终端的初始位置估计的准确度的方法和装置。 首先获得终端的初始位置估计(例如,基于小区ID或增强小区ID解决方案)。 测量是为终端获得的。 然后用测量值更新初始位置估计值,以获得终端的修订位置估计值。 (1)基于初始位置估计值和测量结果导出测量向量,(2)形成测量结果的观察矩阵,(3)确定权重矩阵,(4)导出校正向量 基于测量矢量,观察矩阵和权重矩阵,以及(5)用校正矢量更新初始位置估计。
    • 79. 发明申请
    • APPARATUS TO MEASURE THE EARTH'S LOCAL GRAVITY AND MAGNETIC FIELD IN CONJUNCTION WITH GLOBAL POSITIONING ATTITUDE DETERMINATION
    • 测量地球局部重力和磁场的设备与全球定位姿态测定相结合
    • WO02050400A2
    • 2002-06-27
    • PCT/US2001/049036
    • 2001-12-18
    • E21B47/022G01C21/18G01S5/14G01S19/48E21B47/00
    • G01C21/18E21B47/022G01S19/53
    • The present invention provides a method for determining magnetometer errors during wellbore survey operations. It is capable of determining errors on up to three axes, with or without the use of an external reference measurement of the local magnetic field, and is capable of providing an accurate result using data from a minimum number of surveys. A model is used to correct the observed data and the corrected data are transformed from the tool coordinate system to a different coordinate system referenced to the earth. The difference between the corrected transformed data and reference data in the earth coordinate system is minimized to determine the model parameters. The present invention also provides a method for determining residual uncertainty in the measurements and for quality control of the measurements. Once a survey has been obtained with reference to magnetic north, it is corrected using magnetic declination data obtained concurrently with the survey using surface GPS receivers, magnetometers and accelerometers.
    • 本发明提供一种在井筒测量操作期间确定磁力计误差的方法。 它可以在多达三个轴上确定误差,无论是否使用局部磁场的外部参考测量,并且能够使用最少数量的测量数据提供准确的结果。 使用模型来校正观察到的数据,并且将校正的数据从工具坐标系变换为参考地球的不同坐标系。 校正的变换数据和地球坐标系中的参考数据之间的差异被最小化以确定模型参数。 本发明还提供了用于确定测量中的残余不确定性和测量的质量控制的方法。 一旦参考磁北极测量,就可以使用表面GPS接收机,磁力计和加速度计与测量同时获得的磁偏角数据进行校正。