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    Method and apparatus of GNSS receiver heading determination
    51.
    发明授权
    Method and apparatus of GNSS receiver heading determination 有权
    GNSS接收机航向确定方法和装置

    公开(公告)号：US09052388B2

    公开(公告)日：2015-06-09

    申请号：US14325446

    申请日：2014-07-08

    申请人： Topcon Positioning Systems, Inc.

    发明人： Vladimir V. Veitsel ,  Dmitry P. Nikitin ,  Andrey V. Plenkin ,  Andrey V. Veitsel ,  Mark I. Zhodzishsky ,  Victor A. Prasolov

    IPC分类号： G01S19/13

    CPC分类号： G01S19/13 ,  G01S19/52

    摘要： The present invention relates to processing information generated by GNSS receivers received signals such as GPS, GLONASS, etc. GNSS receivers can determine their position in space. The receivers are capable of determining both coordinates and velocity of their spatial movement. When a receiver is used in any machine control systems, velocity vector heading (in other words, velocity vector orientation) should be determined along with velocity vector's absolute value. Angle, determining velocity vector orientation, is calculated based on velocity vector projections which are computed in navigation receivers. The accuracy of velocity vector orientation calculated based on velocity vector projections strongly enough depends on velocity vector's absolute value. To enhance the accuracy, a method of smoothing primary estimates of velocity vector orientation angles using a modified Kalman filter has been proposed. The bandwidth of this filter is varied depending on current estimates of velocity vector's absolute value which were calculated based on the same velocity vector projections.

    摘要翻译： 本发明涉及由GNSS接收机生成的接收信号（例如GPS，GLONASS等）的处理信息。GNSS接收机可以确定它们在空间中的位置。 接收机能够确定其空间运动的坐标和速度。 当接收机用于任何机器控制系统时，速度矢量标题（换句话说，速度矢量方向）应与速度矢量的绝对值一起确定。 基于在导航接收机中计算的速度矢量投影计算角度，确定速度矢量方向。 基于速度矢量投影计算出的速度矢量方向的精确度足够高取决于速度矢量的绝对值。 为了提高准确性，已经提出了使用改进的卡尔曼滤波器来平滑速度矢量定向角的初级估计的方法。 该滤波器的带宽根据基于相同速度矢量投影计算的速度矢量绝对值的当前估计而变化。

    DIGITAL SYSTEM AND METHOD OF ESTIMATING NON-ENERGY PARAMETERS OF SIGNAL CARRIER
    52.
    发明申请
    DIGITAL SYSTEM AND METHOD OF ESTIMATING NON-ENERGY PARAMETERS OF SIGNAL CARRIER 有权
    数字系统和估计信号载波非能量参数的方法

    公开(公告)号：US20150063432A1

    公开(公告)日：2015-03-05

    申请号：US14527880

    申请日：2014-10-30

    申请人： Topcon Positioning Systems, Inc.

    发明人： Mark I. Zhodzishsky ,  Victor A. Prasolov ,  Vladimir V. Veitsel ,  Dmitry M. Zhodzishsky ,  ALEXEY S. LEBEDINSKY ,  ILYA V. IVANTSOV

    IPC分类号： H04L25/02 ,  H04L7/033 ,  H04B17/00

    CPC分类号： H04L25/0262 ,  G01S19/37 ,  H03L7/08 ,  H03L2207/50 ,  H04B17/364 ,  H04L7/0331

    摘要： Navigation satellite receivers have a large number of channels, where phase discriminators and loop filter of a PLL operate in phase with data bits and control of numerically controlled oscillator (NCO) carried out simultaneously on all channels. Since symbol boundaries for different satellites do not match, there is a variable time delay between the generation of control signals and NCO control time. This delay may be measured by counting a number of samples in the delay interval. A proposed system measures non-energy parameters of the BPSK-signal carrier received in additive mixture with noise when a digital loop filter of PLL controls NCO with a constant or changing in time delay. A control unit controls bandwidth and a LF order by changing transfer coefficients based on analyzing estimated signal parameters and phase tracking error at a PD output.

    摘要翻译： 导航卫星接收机具有大量信道，其中PLL的相位鉴别器和环路滤波器与所有信道上同时执行的数字位和数控振荡器（NCO）的相位操作。 由于不同卫星的符号边界不匹配，控制信号的产生和NCO控制时间之间存在可变的时间延迟。 该延迟可以通过对延迟间隔中的采样数进行计数来测量。 所提出的系统在PLL的数字环路滤波器控制NCO具有恒定或时间延迟变化时，测量在具有噪声的加法混合中接收的BPSK信号载波的非能量参数。 控制单元通过基于分析PD输出端的估计信号参数和相位跟踪误差来改变传输系数来控制带宽和LF顺序。

    Ground Planes for Reducing Multipath Reception by Antennas
    53.
    发明申请
    Ground Planes for Reducing Multipath Reception by Antennas 有权
    降低天线多路径接收的地面平面

    公开(公告)号：US20150015451A1

    公开(公告)日：2015-01-15

    申请号：US14357447

    申请日：2013-04-11

    申请人： Topcon Positioning Systems, Inc.

    发明人： Dmitry V. Tatarnikov ,  Andrey V. Astakhov

    IPC分类号： H01Q1/48

    CPC分类号： H01Q1/48 ,  H01Q3/44 ,  H01Q15/14 ,  H01Q19/10

    摘要： An antenna system for a global navigation satellite system reference base station is disclosed.The antenna system includes an antenna positioned above a high capacitive impedance surface (HCIS) ground plane.Over a specific range of the lateral dimension of the HCIS ground plane and the height of the antenna above the HCIS ground plane, a high level of multipath suppression and high sensitivity for low-elevated satellites can be simultaneously maintained.The HCIS ground plane can be fabricated as a flat conducting plate with an array of conducting elements such as pins, pins with expanded tips, or mushroom structures. Alternatively, the HCIS can be fabricated as a flat conducting plate with a concentric series of choke rings.The antenna system can provide a positioning accuracy of +/−1 mm, an order of magnitude improvement over previous designs.

    摘要翻译： 公开了一种用于全球导航卫星系统参考基站的天线系统。 天线系统包括位于高容性阻抗表面（HCIS）接地平面上方的天线。 在HCIS接地面的横向尺寸的特定范围和天线高度在HCIS接地面之上的特定范围内，可以同时保持高水平的多径抑制和对低架卫星的高灵敏度。 可以将HCIS接地平面制造成具有导电元件阵列的平面导电板，例如引脚，具有扩展尖端的销或蘑菇结构。 或者，HCIS可以制造成具有同心的一系列扼流圈的平面导电板。 天线系统可以提供+/- 1 mm的定位精度，与以前的设计相比有一个数量级的改进。

    Selection of a Subset of Global Navigation Satellite System Measurements Based on Prediction of Accuracy of Target Parameters
    54.
    发明申请
    Selection of a Subset of Global Navigation Satellite System Measurements Based on Prediction of Accuracy of Target Parameters 有权
    基于目标参数精度预测的全球导航卫星系统测量子集的选择

    公开(公告)号：US20130342396A1

    公开(公告)日：2013-12-26

    申请号：US13920427

    申请日：2013-06-18

    申请人： Topcon Positioning Systems, Inc.

    发明人： Raymond M. O'Connor ,  Ivan Giovanni Di Federico ,  Sergey Averin ,  Daniel Milyutin

    IPC分类号： G01S19/05

    CPC分类号： G01S19/05 ,  G01S19/28

    摘要： An optimum measurement subset with a specified number n of elements is generated from a set of N>n weighted input global navigation satellite system (GNSS) measurements. A group of trial measurement subsets is generated by removing a different individual weighted input GNSS measurement from the set. A value of accuracy criterion for a target parameter is calculated for each trial measurement subset, and the trial measurement subset with the minimum value of accuracy criterion is selected. A new group of trial measurement subsets is generated by removing a different individual weighted GNSS measurement from the previously selected trial measurement subset. A value of accuracy criterion is calculated for each new trial measurement subset, and a new trial measurement subset with the new minimum value of accuracy criterion is selected. The process is repeated until the selected trial measurement subset has the specified number n of elements.

    摘要翻译： 从一组N> n个加权输入全球导航卫星系统（GNSS）测量中产生具有指定数目n个元素的最佳测量子集。 通过从组中移除不同的个体加权输入GNSS测量来生成一组试验测量子集。 为每个试验测量子集计算目标参数的精度准则值，并选择具有最小精度准则标准的试验测量子集。 通过从先前选择的试验测量子集中移除不同的加权GNSS测量来生成新的一组试验测量子集。 为每个新的试验测量子集计算精度准则的值，并且选择具有新的最小精度准则标准的新的试验测量子集。 重复该过程直到所选择的试验测量子集具有指定数量的n个元素。

    Digital reconfigurable apparatus for spectrum analysis and intreference rejection
    55.
    发明授权
    Digital reconfigurable apparatus for spectrum analysis and intreference rejection 有权

    公开(公告)号：US12105125B2

    公开(公告)日：2024-10-01

    申请号：US16757639

    申请日：2019-08-13

    申请人： Topcon Positioning Systems, Inc.

    发明人： Andrey V. Veitsel ,  Pavel V. Kalmykov ,  Igor A. Orlovsky ,  Victor A. Prasolov ,  Evgeny N. Sidorov

    IPC分类号： G01R23/167 ,  H04K3/00

    CPC分类号： G01R23/167 ,  H04K3/90

    摘要： Digital anti-jam apparatus includes a CPU; N spectrum analysis and band rejection (SABR) modules, each receiving a digital quadrature signal input, outputting a spectral data output, and outputting a quadrature output with interference band rejected; the CPU first places the SABR modules into a spectral analysis (SA) mode, and upon detection of interference, places the SABR modules into a band rejection (BR) mode while the interference continues; N N-to-1 multiplexers, whose quadrature outputs are connected to corresponding SABR modules, wherein the CPU controls whether to connect an input of each multiplexer either to the quadrature signal input or to the quadrature band-reject output of any other SABR module; a (N+1)-to-1 multiplexer, connected to the quadrature signal input or to the quadrature output of any SABR module; and a frequency conversion module, that receives output of the (N+1)-to-1 multiplexer and shifts a spectrum of the digital quadrature signal input.

    METHOD AND APPARATUS FOR DETERMINING MARKER POSITION AND ATTITUDE
    56.
    发明公开
    METHOD AND APPARATUS FOR DETERMINING MARKER POSITION AND ATTITUDE 审中-公开

    公开(公告)号：US20240087278A1

    公开(公告)日：2024-03-14

    申请号：US18255684

    申请日：2022-04-07

    申请人： Topcon Positioning Systems, Inc.

    发明人： Mikhail Yurievich VOROBIEV

    IPC分类号： G06V10/22 ,  G06T7/73 ,  G06V20/56

    CPC分类号： G06V10/225 ,  G06T7/73 ,  G06V20/56 ,  G06T2207/10012 ,  G06T2207/30252

    摘要： A method and apparatus for determining a position and attitude of a marker having encoded information includes the step of acquiring an image of a marker by a stereo camera. A center of the marker is determined and then a position of the marker is determined based on the center of the marker. A plurality of vertices on the marker about the center of the marker are then determined. Using the plurality of vertices, a pitch, roll, and heading of the marker are determined. An attitude of the marker is determined based on the pitch, roll, and heading of the marker. The method and/or apparatus for determining a position and attitude of a marker can be used in various applications to determine the position and attitude of objects on which the marker is located.