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    GNSS post positioning with elongated dither sequence
    32.
    发明申请
    GNSS post positioning with elongated dither sequence 有权
    GNSS后置定位与细长的抖动序列

    公开(公告)号：US20090140914A1

    公开(公告)日：2009-06-04

    申请号：US12313255

    申请日：2008-11-18

    申请人： Nicholas Charles Talbot ,  Shawn Weisenburger ,  David G. Bird

    发明人： Nicholas Charles Talbot ,  Shawn Weisenburger ,  David G. Bird

    IPC分类号： G01S1/00

    CPC分类号： G01S19/04

    摘要： A computer apparatus for post positioning with a selected precision. The apparatus includes a GNSS post processor to post process reference GNSS carrier phases from a reference system and rover GNSS carrier phases from a rover receiver to compute a secure position for the rover receiver not available to a user. The apparatus includes a random process generator to generate a sequence of offset vectors to dither the secure position according to a computed dither level to provide the selected precision for a user-available position for the rover receiver.

    摘要翻译： 一种用于以精确定位的定位的计算机装置。 该装置包括GNSS后处理器，用于从参考系统和流氓GNSS载波相位从流动站接收器发送处理参考GNSS载波相位，以计算用户不可用的流动站接收机的安全位置。 该装置包括随机过程发生器，用于产生偏移矢量序列，以根据计算出的抖动电平来抖动安全位置，以为流动站接收器的用户可用位置提供所选精度。

    Method and receiver using a low earth orbiting satellite signal to augment the global positioning system
    35.
    发明授权
    Method and receiver using a low earth orbiting satellite signal to augment the global positioning system 失效
    使用低地球轨道卫星信号的方法和接收机来增强全球定位系统

    公开(公告)号：US5944770A

    公开(公告)日：1999-08-31

    申请号：US969350

    申请日：1997-11-28

    申请人： Per K. Enge ,  Nicholas Charles Talbot

    发明人： Per K. Enge ,  Nicholas Charles Talbot

    IPC分类号： G01S1/00 ,  G01S5/14 ,  G01S19/07 ,  G01S19/11 ,  G01S19/12 ,  G01S19/31 ,  H04B7/185 ,  G06F165/00 ,  G01S5/02

    CPC分类号： G01S19/44 ,  G01S19/04 ,  H04B7/18552

    摘要： A method and an apparatus using a low Earth orbiting (LEO) satellite signal to augment the Global Positioning System (GPS) for finding a location vector between a GPS user receiver and a GPS reference receiver. The GPS user receiver computes a LEO user-reference carrier phase difference and a GPS user-reference carrier phase difference for the LEO satellite signal and a GPS satellite signal, respectively, received simultaneously at the GPS user receiver and the GPS reference receiver. Carrier phase double differences are computed from a difference between the GPS user-reference carrier phases from two GPS satellites and either the LEO user-reference carrier phases from two LEO satellites or the GPS user-reference carrier phase from one GPS satellite and the LEO user-reference carrier phase from one LEO satellite. The location vector is computed from a difference between the double differences for two satellite geometries. The GPS reference receiver communicates the reference carrier phase data to the GPS user receiver through the LEO satellite. An ionospheric delay model is determined by tracking the LEO satellite signal as the LEO satellite traverses the sky. An optional calibrator corrects for measurement delay in determining the carrier phases in the GPS user receiver and the GPS reference receiver.

    摘要翻译： 一种使用低地球轨道（LEO）卫星信号来增加全球定位系统（GPS）以在GPS用户接收机和GPS参考接收机之间找到位置矢量的方法和装置。 GPS用户接收机分别计算在GPS用户接收机和GPS参考接收机上同时接收的LEO卫星信号和GPS卫星信号的LEO用户参考载波相位差和GPS用户参考载波相位差。 从两个GPS卫星的GPS用户参考载波相位和来自两个LEO卫星的LEO用户参考载波相位或来自一个GPS卫星的GPS用户参考载波相位和LEO用户之间的差异计算载波相位差 - 一个LEO卫星的参考载波相位。 位置矢量是根据两个卫星几何的双重差异之差计算的。 GPS参考接收机通过LEO卫星将参考载波相位数据传送给GPS用户接收机。 电离层延迟模型是通过LEO卫星穿越天空跟踪LEO卫星信号来确定的。 可选的校准器校正GPS用户接收机和GPS参考接收机中确定载波相位的测量延迟。

    Method and reciever using a low earth orbiting satellite signal to augment the global positioning system
    36.
    发明授权
    Method and reciever using a low earth orbiting satellite signal to augment the global positioning system 失效
    使用低地球轨道卫星信号的方法和接收来增强全球定位系统

    公开(公告)号：US5812961A

    公开(公告)日：1998-09-22

    申请号：US580504

    申请日：1995-12-28

    申请人： Per K. Enge ,  Nicholas Charles Talbot

    发明人： Per K. Enge ,  Nicholas Charles Talbot

    IPC分类号： G01S1/00 ,  G01S5/14 ,  G01S19/07 ,  G01S19/11 ,  G01S19/12 ,  G01S19/31 ,  H04B7/185 ,  G06F165/00 ,  G01S5/02

    CPC分类号： G01S19/44 ,  G01S19/04 ,  H04B7/18552

    摘要： A method and an apparatus using a low Earth orbiting (LEO) satellite signal to augment the Global Positioning System (GPS) for finding a location vector between a GPS user receiver and a GPS reference receiver. The GPS user receiver computes a LEO user-reference carrier phase difference and a GPS user-reference carrier phase difference for the LEO satellite signal and a GPS satellite signal, respectively, received simultaneously at the GPS user receiver and the GPS reference receiver. Carrier phase double differences are computed from a difference between the GPS user-reference carrier phases from two GPS satellites and either the LEO user-reference carrier phases from two LEO satellites or the GPS user-reference carrier phase from one GPS satellite and the LEO user-reference carrier phase from one LEO satellite. The location vector is computed from a difference between the double differences for two satellite geometries. The GPS reference receiver communicates the reference carrier phase data to the GPS user receiver through the LEO satellite. An ionospheric delay model is determined by tracking the LEO satellite signal as the LEO satellite traverses the sky. An optional calibrator corrects for measurement delay in determining the carrier phases in the GPS user receiver and the GPS reference receiver.

    摘要翻译： 一种使用低地球轨道（LEO）卫星信号来增加全球定位系统（GPS）以在GPS用户接收机和GPS参考接收机之间找到位置矢量的方法和装置。 GPS用户接收机分别计算在GPS用户接收机和GPS参考接收机上同时接收的LEO卫星信号和GPS卫星信号的LEO用户参考载波相位差和GPS用户参考载波相位差。 从两个GPS卫星的GPS用户参考载波相位和来自两个LEO卫星的LEO用户参考载波相位或来自一个GPS卫星的GPS用户参考载波相位和LEO用户之间的差异计算载波相位差 - 一个LEO卫星的参考载波相位。 位置矢量是根据两个卫星几何的双重差异之差计算的。 GPS参考接收机通过LEO卫星将参考载波相位数据传送给GPS用户接收机。 电离层延迟模型是通过LEO卫星穿越天空跟踪LEO卫星信号来确定的。 可选的校准器校正GPS用户接收机和GPS参考接收机中确定载波相位的测量延迟。

    Laser transmitter, laser receiver and method
    37.
    发明授权
    Laser transmitter, laser receiver and method 有权
    激光发射机，激光接收机和方法

    公开(公告)号：US07947944B2

    公开(公告)日：2011-05-24

    申请号：US12263772

    申请日：2008-11-03

    申请人： Nicholas Charles Talbot

    发明人： Nicholas Charles Talbot

    IPC分类号： G06M7/00 ,  G01J1/20 ,  G01C9/00

    CPC分类号： G01C15/004 ,  G01C15/006

    摘要： A combination of a laser transmitter and a laser receiver and a method determine the elevation of the receiver with respect to the transmitter. The laser transmitter includes a a laser light source for providing a beam of laser light and an element for directing the beam. The beam diverges vertically and varies in intensity vertically. A laser receiver includes an array of laser beam detectors for detecting the beam and the variations in the beam intensity in a vertical direction. The vertical position of the laser receiver with respect to the laser transmitter can be determined in this manner. The beam varies in intensity vertically in a predetermined vertical pattern, and the laser receiver detects at least a portion of the pattern defined by the beam such that the portion of the beam detected by the laser receiver may be determined.

    摘要翻译： 激光发射机和激光接收机的组合以及确定接收机相对于发射机的高程的方法。 激光发射器包括用于提供激光束的激光源和用于引导光束的元件。 光束垂直发散，垂直方向变化。 激光接收器包括用于检测光束的激光束检测器阵列和垂直方向上的光束强度的变化。 可以以这种方式确定激光接收器相对于激光发射器的垂直位置。 光束以预定的垂直图案垂直地变化，并且激光接收器检测由光束限定的图案的至少一部分，使得可以确定由激光接收器检测到的光束的部分。

    Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control
    39.
    发明授权
    Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control 失效
    厘米精确的全球定位系统接收器，用于实时运动测量和控制

    公开(公告)号：US5890091A

    公开(公告)日：1999-03-30

    申请号：US27827

    申请日：1998-02-19

    申请人： Nicholas Charles Talbot ,  Michael Timo Allison ,  Mark Edward Nichols

    发明人： Nicholas Charles Talbot ,  Michael Timo Allison ,  Mark Edward Nichols

    IPC分类号： G01S19/44 ,  G01S5/14 ,  G01S19/25 ,  G01S3/02 ,  G01S5/02 ,  G06F165/00

    CPC分类号： G01S19/44 ,  G01S19/04 ,  G01S19/32

    摘要： A system embodiment of the present invention comprises a fixed and a roving pair of four-observable GPS receivers and a communication link between them for double differencing code and carrier measurements. Carrier phase integer ambiguities are resolved efficiently by searching the simultaneous narrow-lane intersections of both the L1 and L2 wave fronts propagated by the GPS satellites being tracked. External constraint information, such as elevation, is additionally used to speed up integer ambiguity resolution. Data between the reference station and the rover is communicated in compressed form at a regular interval, e.g., once a second at each epoch, and demi-measurements of carrier phase are obtained more frequently, e.g., ten times a second, and used to propagate solutions between epochs.

    摘要翻译： 本发明的系统实施例包括固定和粗纱四对可观测的GPS接收机以及它们之间的通信链路用于双差分码和载波测量。 通过搜索正被跟踪的GPS卫星传播的L1和L2波前的同时窄车道交叉，有效解决载波相位整数模糊度。 外部约束信息，如高程，另外用于加速整数模糊度分辨率。 参考站和流动站之间的数据以规则的间隔以压缩的形式进行通信，例如每个时期一次一次，并且更频繁地获得载波相位的测量，例如每秒十次，并用于传播 时代之间的解决方案