公开(公告)号：US20080077325A1

公开(公告)日：2008-03-27

申请号：US11534951

申请日：2006-09-25

Applicant: Charles T. Bye ,  Lawrence C. Vallot

Inventor： Charles T. Bye ,  Lawrence C. Vallot

IPC: G01C21/00

CPC classification number: G01C21/165 ,  G01C21/28 ,  G01S19/49

Abstract: Systems and methods for improved state estimates using filter algorithms are provided. In one embodiment, a method for navigating a vehicle comprises executing a filter algorithm having a state transition matrix that calculates an update to a state vector based on a state vector for a previous instance in time; receiving inertial measurement data from at least one inertial sensor; receiving data from at least one navigation aid; monitoring for the existence of one or more conditions based on a known error characteristic of the at least one inertial sensor; when the one or more conditions exist, calculating at least one element of the one or more elements of the state transition matrix based on the data from the at least one navigation aid; and when the one or more conditions do not exist, calculating the one or more elements of the state transition matrix based on inertial measurement data.

Abstract translation: 提供了使用滤波算法改进状态估计的系统和方法。 在一个实施例中，用于导航车辆的方法包括执行具有状态转移矩阵的过滤器算法，所述状态转移矩阵基于对于先前实例的状态向量来计算状态向量的更新; 从至少一个惯性传感器接收惯性测量数据; 从至少一个导航辅助接收数据; 基于所述至少一个惯性传感器的已知误差特性监视一个或多个条件的存在; 当存在所述一个或多个条件时，基于来自所述至少一个导航辅助的数据计算所述状态转移矩阵的所述一个或多个元素中的至少一个元素; 并且当不存在一个或多个条件时，基于惯性测量数据计算状态转移矩阵的一个或多个元素。

公开(公告)号：US20070279279A1

公开(公告)日：2007-12-06

申请号：US11422523

申请日：2006-06-06

Applicant: David W. Meyers ,  Brian W. Schipper ,  Lawrence C. Vallot

Inventor： David W. Meyers ,  Brian W. Schipper ,  Lawrence C. Vallot

IPC: G01S1/00 ,  H04B7/185

CPC classification number: G01S19/23 ,  G01S19/20

Abstract: A system and method for enhancing the performance of satellite navigation receivers are disclosed, which incorporate a precise frequency reference in a satellite navigation receiver that reduces the system's dependence on maintaining continuous satellite reception for RAIM availability. As one example, a system for enhancing the performance of a satellite navigation receiver is disclosed, which includes a GPS receiver and a high precision (e.g., atomic) clock incorporated into the GPS receiver. The use of the high precision clock reduces clock error and the number of satellite measurements needed to meet existing RAIM availability requirements. For example, incorporating a precision clock into a GPS receiver provides an enhanced system that meets existing RAIM availability requirements with at least one less satellite measurement than the number needed for prior systems using RAIM.

Abstract translation: 公开了一种用于增强卫星导航接收机性能的系统和方法，其在卫星导航接收机中包含精确的频率参考，其降低了系统对维持RAIM可用性的连续卫星接收的依赖性。 作为一个示例，公开了一种用于增强卫星导航接收机的性能的系统，其包括GPS接收机和并入GPS接收机的高精度（例如，原子）时钟。 使用高精度时钟可以减少时钟误差和满足现有RAIM可用性要求所需的卫星测量次数。 例如，将精密时钟并入GPS接收机中，提供了一种增强型系统，该系统能够利用至少比使用RAIM的现有系统所需的数量少一个卫星测量来满足现有的RAIM可用性要求。

公开(公告)号：US08061181B2

公开(公告)日：2011-11-22

申请号：US12122504

申请日：2008-05-16

Applicant: Owen Grossman ,  Lawrence C. Vallot

Inventor： Owen Grossman ,  Lawrence C. Vallot

IPC: G01C17/38

CPC classification number: G01C21/16 ,  G01B11/272

Abstract: An apparatus for providing information pertaining to the orientation of a vehicle to which the apparatus is coupled includes a chassis having a first interior surface and an inertial-sensor assembly disposed within the chassis and having a first exterior surface. A first sensor element is mounted on the first interior surface, and a second sensor element is mounted on the first exterior surface. At least one of the first and second sensor elements is configured to generate a first signal corresponding to an angle of displacement of the second sensor element with respect to the first sensor element.

Abstract translation: 一种用于提供关于装置所耦合的车辆的取向的信息的装置包括具有第一内表面和设置在底盘内并具有第一外表面的惯性传感器组件的底盘。 第一传感器元件安装在第一内表面上，第二传感器元件安装在第一外表面上。 第一和第二传感器元件中的至少一个被配置为产生对应于第二传感器元件相对于第一传感器元件的位移角的第一信号。

公开(公告)号：US08047047B2

公开(公告)日：2011-11-01

申请号：US12122555

申请日：2008-05-16

Applicant: Owen Grossman ,  Lawrence C. Vallot

Inventor： Owen Grossman ,  Lawrence C. Vallot

IPC: G01C17/38

CPC classification number: G01C21/16

Abstract: An apparatus for providing information pertaining to the orientation of a vehicle to which the apparatus is coupled includes a chassis having a first interior surface and an inertial-sensor assembly disposed within the chassis and having a first exterior surface. A first sensor element is mounted on the first interior surface, and a second sensor element is mounted on the first exterior surface. At least one of the first and second sensor elements is configured to generate a first signal corresponding to a distance of displacement of the second sensor element with respect to the first sensor element.

Abstract translation: 一种用于提供关于装置所耦合的车辆的取向的信息的装置包括具有第一内表面和设置在底盘内并具有第一外表面的惯性传感器组件的底盘。 第一传感器元件安装在第一内表面上，第二传感器元件安装在第一外表面上。 第一和第二传感器元件中的至少一个被配置为产生对应于第二传感器元件相对于第一传感器元件的位移距离的第一信号。

公开(公告)号：US20090282894A1

公开(公告)日：2009-11-19

申请号：US12122555

申请日：2008-05-16

Applicant: Owen Grossman ,  Lawrence C. Vallot

Inventor： Owen Grossman ,  Lawrence C. Vallot

IPC: G01P21/00

CPC classification number: G01C21/16

Abstract: An apparatus for providing information pertaining to the orientation of a vehicle to which the apparatus is coupled includes a chassis having a first interior surface and an inertial-sensor assembly disposed within the chassis and having a first exterior surface. A first sensor element is mounted on the first interior surface, and a second sensor element is mounted on the first exterior surface. At least one of the first and second sensor elements is configured to generate a first signal corresponding to a distance of displacement of the second sensor element with respect to the first sensor element.

Abstract translation: 一种用于提供关于装置所耦合的车辆的取向的信息的装置包括具有第一内表面和设置在底盘内并具有第一外表面的惯性传感器组件的底盘。 第一传感器元件安装在第一内表面上，第二传感器元件安装在第一外表面上。 第一和第二传感器元件中的至少一个被配置为产生对应于第二传感器元件相对于第一传感器元件的位移距离的第一信号。

公开(公告)号：US07605751B2

公开(公告)日：2009-10-20

申请号：US11531747

申请日：2006-09-14

Applicant: Brian W. Schipper ,  Christopher A. Lund ,  Lawrence C. Vallot

Inventor： Brian W. Schipper ,  Christopher A. Lund ,  Lawrence C. Vallot

IPC: G01S1/00

CPC classification number: G01S19/215 ,  G01S19/18 ,  G01S19/22

Abstract: A method and systems for processing Global Positioning System (GPS) signals is provided. The method includes determining if two signals or more signals with the same pseudorandom number bit sequence (PRN) are detected by a GPS receiver.

Abstract translation: 提供了一种用于处理全球定位系统（GPS）信号的方法和系统。 该方法包括确定GPS接收机是否检测到具有相同伪随机数位序列（PRN）的两个信号或更多个信号。

公开(公告)号：US06859727B2

公开(公告)日：2005-02-22

申请号：US10338415

申请日：2003-01-08

Applicant: Charles T. Bye ,  Christopher A. Lund ,  Lawrence C. Vallot

Inventor： Charles T. Bye ,  Christopher A. Lund ,  Lawrence C. Vallot

IPC: G01C21/16 ,  G01C21/32

CPC classification number: G01C21/165

Abstract: A navigation system includes a Kalman filter to compensate for bias errors in inertial sensing elements. An observed pitch, roll or heading change is input to the Kalman filter either from an aiding source or when the navigation system is in a known condition. The Kalman filter generates a correction signal that is provided to the navigation computation system.

Abstract translation: 导航系统包括卡尔曼滤波器以补偿惯性感测元件中的偏差。 观察到的俯仰，滚动或航向变化从辅助源或当导航系统处于已知状态时输入到卡尔曼滤波器。 卡尔曼滤波器产生提供给导航计算系统的校正信号。

公开(公告)号：US4768152A

公开(公告)日：1988-08-30

申请号：US831982

申请日：1986-02-21

Applicant: Werner H. Egli ,  Lawrence C. Vallot

Inventor： Werner H. Egli ,  Lawrence C. Vallot

IPC: E21B47/022

CPC classification number: E21B47/022

Abstract: Apparatus and method for the surveying of bore holes, for example, oil wells and the like, to permit accurate three-dimensional mapping thereof, using a single rate gyroscope and an accelerometer package in an instrumentation pod which is lowered into the bore hole. Signals from the accelerometers and the rate gyroscope plus the increments by which the pod is lowered into the well permit continual calculation of pod attitude and updated of pod position at all depths in the hole.

Abstract translation: 用于测量钻孔的装置和方法，例如油井等，以允许使用下降到钻孔中的仪器舱中的单速率陀螺仪和加速度计封装进行准确的三维映射。 来自加速度计和速率陀螺仪的​​信号加上荚降低到井中的增量允许持续计算荚体姿态并更新孔中所有深度处的荚果位置。

公开(公告)号：US07840381B2

公开(公告)日：2010-11-23

申请号：US12245250

申请日：2008-10-03

Applicant: Christopher A. Lund ,  Lawrence C. Vallot ,  Scott I. Snyder ,  Richard S. Russell

Inventor： Christopher A. Lund ,  Lawrence C. Vallot ,  Scott I. Snyder ,  Richard S. Russell

IPC: G06F19/00

CPC classification number: G01C21/00 ,  G01C25/00

Abstract: A method of determining an operational state of a navigation system of a platform is provided. The method comprises testing at least a portion of hardware in the navigation system. Additionally, a measurement of at least one navigation variable from an inertial sensor is combined with a measurement of another navigation variable. A plurality of residuals for the measurement of at least one navigation variable and the measurement of another navigation variable are determined with a blending filter. An error for the measurement of at least one navigation variable is estimated based on the plurality of residuals. The method also predicts an error for the measurement of at least one navigation variable while the navigation system is in route. A determination is made as to whether the navigation system meets operational standards based on testing at least a portion of hardware, estimating an error for the measurement of at least one navigation variable, and predicting an error for the measurement of at least one navigation variable. Finally, one of a first state and a second state of the navigation system is output, the first state indicating that the navigation system does meet operational standards and the second state indicating that the navigation system does not meet operational standards.

Abstract translation: 提供了一种确定平台的导航系统的操作状态的方法。 该方法包括测试导航系统中的至少一部分硬件。 此外，来自惯性传感器的至少一个导航变量的测量与另一导航变量的测量结合。 用混合滤波器确定用于测量至少一个导航变量的多个残差和另一个导航变量的测量。 基于多个残差来估计至少一个导航变量的测量的误差。 该方法还预测当导航系统处于路由时测量至少一个导航变量的错误。 确定导航系统是否满足基于至少一部分硬件的测试操作标准，估计至少一个导航变量的测量的误差，以及预测至少一个导航变量的测量的误差。 最后，输出导航系统的第一状态和第二状态之一，指示导航系统确实满足操作标准的第一状态，以及指示导航系统不符合操作标准的第二状态。

公开(公告)号：US20100088064A1

公开(公告)日：2010-04-08

申请号：US12245250

申请日：2008-10-03

Applicant: Christopher A. Lund ,  Lawrence C. Vallot ,  Scott I. Snyder ,  Richard S. Russell

Inventor： Christopher A. Lund ,  Lawrence C. Vallot ,  Scott I. Snyder ,  Richard S. Russell

IPC: G06F17/18 ,  G06F15/00

CPC classification number: G01C21/00 ,  G01C25/00

Abstract: A method of determining an operational state of a navigation system of a platform is provided. The method comprises testing at least a portion of hardware in the navigation system. Additionally, a measurement of at least one navigation variable from an inertial sensor is combined with a measurement of another navigation variable. A plurality of residuals for the measurement of at least one navigation variable and the measurement of another navigation variable are determined with a blending filter. An error for the measurement of at least one navigation variable is estimated based on the plurality of residuals. The method also predicts an error for the measurement of at least one navigation variable while the navigation system is in route. A determination is made as to whether the navigation system meets operational standards based on testing at least a portion of hardware, estimating an error for the measurement of at least one navigation variable, and predicting an error for the measurement of at least one navigation variable. Finally, one of a first state and a second state of the navigation system is output, the first state indicating that the navigation system does meet operational standards and the second state indicating that the navigation system does not meet operational standards.

Abstract translation: 提供了一种确定平台的导航系统的操作状态的方法。 该方法包括测试导航系统中的至少一部分硬件。 此外，来自惯性传感器的至少一个导航变量的测量与另一导航变量的测量结合。 用混合滤波器确定用于测量至少一个导航变量的多个残差和另一个导航变量的测量。 基于多个残差来估计至少一个导航变量的测量的误差。 该方法还预测当导航系统处于路由时测量至少一个导航变量的错误。 确定导航系统是否满足基于至少一部分硬件的测试操作标准，估计至少一个导航变量的测量的误差，以及预测至少一个导航变量的测量的误差。 最后，输出导航系统的第一状态和第二状态之一，指示导航系统确实满足操作标准的第一状态，以及指示导航系统不符合操作标准的第二状态。