Automatic GNSS signal allocation between remote and base receivers
    2.
    发明授权
    Automatic GNSS signal allocation between remote and base receivers 有权
    远程和基站接收机之间的自动GNSS信号分配

    公开(公告)号:US08532885B1

    公开(公告)日:2013-09-10

    申请号:US13439373

    申请日:2012-04-04

    IPC分类号: G01C21/28

    摘要: A differential global navigation satellite system (DGNSS)-based guidance system which is capable of utilizing satellites from multiple GNSS networks, for example in a real time kinematic (RTK) system. The remote rover receiver and the base station transceiver periodically synchronize to ensure that the satellites being tracked by the rover receiver correspond with those tracked by the base station transceiver. This ensures that redundant position data is filtered out and an accurate GNSS position of the rover unit can be determined. The ability to use satellites from different GNSS networks increases the accuracy of the positioning system and increases the chance of multiple satellites being available to a receiver under a greater number of circumstances.

    摘要翻译: 一种差分全球导航卫星系统(DGNSS)的导航系统,其能够利用来自多个GNSS网络的卫星,例如在实时运动学(RTK)系统中。 远程漫游器接收器和基站收发器周期性地同步以确保由流动站接收器跟踪的卫星与由基站收发信机跟踪的卫星相对应。 这确保冗余位置数据被滤除,并且可以确定流动站单元的精确的GNSS位置。 使用来自不同GNSS网络的卫星的能力增加了定位系统的准确性,并增加了在更多情况下接收机可以使用多颗卫星的机会。

    RF (INCLUDING GNSS) SIGNAL INTERFERENCE MITIGATION SYSTEM AND METHOD
    3.
    发明申请
    RF (INCLUDING GNSS) SIGNAL INTERFERENCE MITIGATION SYSTEM AND METHOD 有权
    射频(包括GNSS)信号干扰减轻系统和方法

    公开(公告)号:US20130142295A1

    公开(公告)日:2013-06-06

    申请号:US13705018

    申请日:2012-12-04

    IPC分类号: H04B15/00

    摘要: An RF (e.g., GNSS) interference mitigation system and method uses a switchable bank of filters for selectively blocking signals in predetermined bandwidths based on detecting strong, interfering signals with an interference detection circuit including a sniffer antenna. A low-strength RF (e.g., GNSS) system can be combined with a spectrally-close high-strength, telecommunications receiver system for cooperative control. Alternatively, an RF receiver can detect tones, changes in DC bias or level changes to activate a filter selection switch.

    摘要翻译: RF(例如,GNSS)干扰减轻系统和方法使用可切换的滤波器组,用于基于使用包括嗅探天线的干扰检测电路检测强的干扰信号来选择性地阻挡预定带宽中的信号。 低强度RF(例如,GNSS)系统可以与光谱密集的高强度电信接收机系统组合以进行协同控制。 或者,RF接收机可以检测音调,DC偏置的变化或电平变化以激活滤波器选择开关。

    Extractor tool and extractor tool kit
    5.
    发明授权
    Extractor tool and extractor tool kit 有权
    提取工具和提取工具套件

    公开(公告)号:US08448547B2

    公开(公告)日:2013-05-28

    申请号:US12762079

    申请日:2010-04-16

    IPC分类号: B25B27/18

    CPC分类号: B25B27/18 B25B15/005

    摘要: An extractor tool for Torx brand and other fluted fasteners comprising an end section for engaging a fastener opening comprising six equally spaced, uniformly sized, pitched flutes separated by uniform depth grooves located at the end of a shank with a cylindrical connecting section joined thereto, in turn, joined to an impact drive end of the shank. The fluted end section has a frusto-conical configuration with the narrow dimension of the fluted end section at the distal end of the tool and wherein the distal end has a flat surface transverse to the longitudinal axis of the shank.

    摘要翻译: 一种用于Torx品牌和其它带槽的紧固件的提取器工具,其包括用于接合紧固件开口的端部部分,该紧固件开口包括六个等间隔的,均匀尺寸的,由均匀的深度槽分隔开的均匀深度槽的槽,所述槽具有连接到其上的圆柱形连接部分, 转动,连接到柄的冲击驱动端。 带凹槽的端部具有截头圆锥形构造,其具有在工具的远端处的槽纹端部的窄尺寸,并且其中远端具有横向于柄的纵向轴线的平坦表面。

    Multiple-antenna GNSS control system and method
    6.
    发明授权
    Multiple-antenna GNSS control system and method 有权
    多天线GNSS控制系统及方法

    公开(公告)号:US08140223B2

    公开(公告)日:2012-03-20

    申请号:US12355776

    申请日:2009-01-17

    IPC分类号: G01C21/28

    摘要: A global navigation satellite sensor system (GNSS) and gyroscope control system for vehicle steering control comprising a GNSS receiver and antennas at a fixed spacing to determine a vehicle position, velocity and at least one of a heading angle, a pitch angle and a roll angle based on carrier phase position differences. The roll angle facilitates correction of the lateral motion induced position errors resultant from motion of the antennae as the vehicle moves based on an offset to ground and the roll angle. The system also includes a control system configured to receive the vehicle position, heading, and at least one of roll and pitch, and configured to generate a steering command to a vehicle steering system. The system includes gyroscopes for determining system attitude change with respect to multiple axes for integrating with GNSS-derived positioning information to determine vehicle position, velocity, rate-of-turn, attitude and other operating characteristics. A vehicle control method includes the steps of computing a position and a heading for the vehicle using GNSS positioning and a rate gyro for determining vehicle attitude, which is used for generating a steering command. Alternative aspects include multiple-antenna GNSS guidance methods for high-dynamic roll compensation, real-time kinematic (RTK) using single-frequency (L1) receivers, fixed and moving baselines between antennas, multi-position GNSS tail guidance (“breadcrumb following”) for crosstrack error correction and guiding multiple vehicles and pieces of equipment relative to each other.

    摘要翻译: 一种用于车辆转向控制的全球导航卫星传感器系统(GNSS)和陀螺仪控制系统,其包括GNSS接收器和固定间隔的天线,以确定车辆位置,速度以及行驶角,俯仰角和侧倾角 基于载波相位差。 滚动角度有助于校正当车辆基于对地面的偏移和侧倾角度而移动时由天线的运动产生的横向运动引起的位置误差。 该系统还包括被配置为接收车辆位置,航向以及滚动和俯仰中的至少一个的控制系统,并被配置为产生对车辆转向系统的转向命令。 该系统包括用于确定相对于多个轴的系统姿态变化的陀螺仪,用于与GNSS导航的定位信息集成以确定车辆位置,速度,转弯角度,姿态和其他操作特性。 车辆控制方法包括以下步骤:使用GNSS定位来计算车辆的位置和航向,以及用于确定用于产生转向命令的车辆姿态的速率陀螺仪。 替代方面包括用于高动态滚动补偿的多天线GNSS指导方法,使用单频(L1)接收机的实时运动学(RTK),天线之间的固定和移动基线,多位置GNSS尾部指导(“面包屑跟踪” ),用于交叉错误校正,并相对于彼此引导多个车辆和设备。

    REMOVING BIASES IN DUAL FREQUENCY GNSS RECEIVERS USING SBAS
    8.
    发明申请
    REMOVING BIASES IN DUAL FREQUENCY GNSS RECEIVERS USING SBAS 有权
    使用SBAS在双频GNSS接收机中移除偏移

    公开(公告)号:US20100231443A1

    公开(公告)日:2010-09-16

    申请号:US12401948

    申请日:2009-03-11

    IPC分类号: G01S19/40

    CPC分类号: G01S19/40 G01S19/07 G01S19/32

    摘要: A method for removing biases in dual frequency GNSS receivers circumvents the need for ionosphere corrections by using L2(P) in combination with either L1(P) or L1(C/A) to form ionosphere-free ranges. A table of biases is stored in microprocessor controller memory and utilized for computing a location using corrected ionosphere-free pseudo ranges. A system for removing biases in dual frequency GNSS receivers includes a dual frequency GNSS receiver and a controller microprocessor adapted to store a table of bias values for correcting pseudo ranges determined using L2(P) in combination with either L1(P) or L1(C/A).

    摘要翻译: 一种用于消除双频GNSS接收机中的偏差的方法通过使用L2(P)与L1(P)或L1(C / A)组合来形成电离层校正,避免了对电离层校正的需要,形成无电离子范围。 偏置表存储在微处理器控制器存储器中,用于使用校正的无电离层伪距来计算位置。 用于去除双频GNSS接收机中的偏差的系统包括双频GNSS接收机和控制器微处理器,其适于存储偏差值表,用于校正使用L2(P)与L1(P)或L1(C /一个)。

    Satellite position and heading sensor for vehicle steering control
    9.
    发明授权
    Satellite position and heading sensor for vehicle steering control 有权
    用于车辆转向控制的卫星位置和航向传感器

    公开(公告)号:US07400956B1

    公开(公告)日:2008-07-15

    申请号:US10804758

    申请日:2004-03-19

    IPC分类号: G01C21/28 G01C21/00 G05D1/00

    摘要: A sensor system for vehicle steering control comprising: a plurality of global navigation satellite sensor systems (GNSS) including receivers and antennas at a fixed spacing to determine a vehicle position, velocity and at least one of a heading angle, a pitch angle and a roll angle based on carrier phase corrected real time kinematic (RTK) position differences. The roll angle facilitates correction of the lateral motion induced position errors resultant from motion of the antennae as the vehicle moves based on an offset to ground and the roll angle. The system also includes a control system configured to receive the vehicle position, heading, and at least one of roll and pitch, and configured to generate a steering command to a vehicle steering system.

    摘要翻译: 一种用于车辆转向控制的传感器系统,包括:多个全球导航卫星传感器系统(GNSS),其包括以固定间隔的接收器和天线,以确定车辆位置,速度以及行驶角,俯仰角和滚动中的至少一个 基于载波相位校正的实时运动(RTK)位置差异的角度。 滚动角度有助于校正当车辆基于对地面的偏移和侧倾角度而移动时由天线的运动产生的横向运动引起的位置误差。 该系统还包括被配置为接收车辆位置,航向以及滚动和俯仰中的至少一个的控制系统,并被配置为产生对车辆转向系统的转向命令。

    Portable reference station for local differential GPS corrections
    10.
    发明授权
    Portable reference station for local differential GPS corrections 有权
    便携式参考站用于本地差分GPS校正

    公开(公告)号:US07400294B2

    公开(公告)日:2008-07-15

    申请号:US11250762

    申请日:2005-10-14

    IPC分类号: G01S5/14

    CPC分类号: G01S19/07

    摘要: A method and system for local computation of information to improve accuracy in a differential Global Navigation Satellite Systems (GNSS). The method comprising: determining a current location of a reference receiver; comparing the current location with at least one stored location; if a resultant of the comparing is less than a selected threshold, identifying as a reference location the at least one stored location, which is closest to the current location; otherwise establishing the current location as the reference location and storing the current location. The method also includes computing the information from signals from one or more GNSS satellites the based on the reference location; and transmitting the information for reception by one or more remote receivers.

    摘要翻译: 用于本地计算信息以提高差分全球导航卫星系统(GNSS)精度的方法和系统。 该方法包括:确定参考接收机的当前位置; 将当前位置与至少一个存储位置进行比较; 如果比较的结果小于所选择的阈值,则将最接近当前位置的至少一个存储位置标识为参考位置; 否则将当前位置确定为参考位置并存储当前位置。 该方法还包括基于参考位置从来自一个或多个GNSS卫星的信号计算信息; 并发送用于由一个或多个远程接收器接收的信息。