公开(公告)号：WO2013192155A1

公开(公告)日：2013-12-27

申请号：PCT/US2013/046267

申请日：2013-06-18

Applicant: TOPCON POSITIONING SYSTEMS, INC.

Inventor： O'CONNOR, Raymond M. ,  DI FEDERICO, Ivan Giovanni ,  AVERIN, Sergey ,  MILYUTIN, Daniel

IPC: G01S19/28

CPC classification number: G01S19/05 ,  G01S19/28

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2013192156A1

公开(公告)日：2013-12-27

申请号：PCT/US2013/046271

申请日：2013-06-18

Applicant: TOPCON POSITIONING SYSTEMS, INC.

Inventor： O'CONNOR, Raymond, M. ,  DI FEDERICO, Ivan, Giovanni ,  AVERIN, Sergey ,  MILYUTIN, Daniel

IPC: G01S19/33 ,  G01S19/32 ,  G01S19/28

CPC classification number: G01S19/28 ,  G01S19/42

Abstract: An optimum measurement subset with a specified number of elements is generated from a set of input global navigation satellite system (GNSS) measurements. A design matrix and a weight matrix are generated. Values of a set of coefficients corresponding to the set of input GNSS measurements are calculated. The value of a specific coefficient is calculated as the ratio of the change in value of the at least one target parameter resulting from the change in value of the specific input GNSS measurement to the change in value of the sum of squared residuals resulting from the change in value of the specific input GNSS measurement. The optimum measurement subset is selected based at least in part on the values of the set of coefficients.

Abstract translation: 从一组输入全球导航卫星系统（GNSS）测量中产生具有指定数量的元件的最佳测量子集。 生成设计矩阵和权重矩阵。 计算与输入GNSS测量集合对应的一组系数的值。 特定系数的值被计算为由特定输入GNSS测量的值的变化导致的至少一个目标参数的值的变化与由变化产生的平均残差之和的值的变化的比率 具体输入的GNSS测量值。 至少部分地基于该组系数的值来选择最佳测量子集。

公开(公告)号：WO2011061587A2

公开(公告)日：2011-05-26

申请号：PCT/IB2010/002883

申请日：2010-11-10

Applicant: TOPCON POSITIONING SYSTEMS, INC. ,  MILYUTIN, Daniel ,  PLENKIN, Andrey

Inventor： MILYUTIN, Daniel ,  PLENKIN, Andrey

IPC: G01S19/44 ,  G01S19/20

CPC classification number: G01S19/43 ,  G01S19/20 ,  G01S19/44

Abstract: A global navigation system includes a first navigation receiver located in a rover and a second navigation receiver located in a base station. Single differences of measurements of satellite signals received at the two receivers are calculated and compared to single differences derived from an observation model. Anomalous measurements are detected and removed prior to performing computations for determining the output position of the rover and resolving integer ambiguities. Detection criteria are based on the residuals between the calculated and the derived single differences. For resolving integer ambiguities, computations based on Cholessky information Kalman filters and Householder transformations are advantageously applied. Changes in the state of the satellite constellation from one epoch to another are included in the computations.

Abstract translation: 全球导航系统包括位于流动站中的第一导航接收器和位于基站中的第二导航接收器。 计算在两个接收器处接收到的卫星信号的单一差异，并将其与从观测模型导出的单一差异进行比较。 在执行计算以确定流动站的输出位置并解决整数模糊之前，检测和移除异常测量。 检测标准基于计算出的和导出的单一差异之间的残差。 为了解决整数模糊度，有利地应用基于Cholessky信息的计算Kalman滤波器和Householder变换。 卫星星座从一个时期到另一个时期的状态的变化包括在计算中。