公开(公告)号：US20130088385A1

公开(公告)日：2013-04-11

申请号：US13646112

申请日：2012-10-05

Applicant: THALES

Inventor： Bernard CHARLOT ,  Gonzagues BERTIN DE LA HAUTIERE ,  Sebastien TRILLES

IPC: G01S19/07

CPC classification number: G01S19/07 ,  G01S5/0009 ,  G01S5/0081 ,  G01S19/02 ,  G01S19/05 ,  G01S19/08 ,  G01S19/46

Abstract: A space-based augmentation system improving the accuracy and reliability of satellite navigation system data includes, each at least: a ground station transmitting data to satellites, a ground station receiving signals transmitted by a satellite and by a satellite equipped with transmitting/receiving means for transmitting data received from the ground transmitting station for a given geographical area; two ground computing centres, redundantly and respectively calculating navigation message streams and transmitting to the ground transmitting station navigation message streams and information representative of Quality of Service provided by the system, from signals transmitted by the ground receiving stations. The computing centres, ground receiving station and ground transmitting station are connected by a communication network. The ground transmitting station selects navigation message streams of a master computing centre according to information representative of respective Quality of Service of said computing centres, and said computing centres are synchronized on said master computing centre.

Abstract translation: 提高卫星导航系统数据的准确性和可靠性的基于空间的增强系统至少包括：地面站向卫星发送数据，地面站接收由卫星发射的信号和配备有发射/接收装置的卫星 从给定的地理区域发送从地面发射站接收的数据; 两个地面计算中心，冗余并分别计算导航消息流，并从地面接收站发送的信号向地面发射台导航消息流和表示系统提供的服务质量的信息发送。 计算中心，地面接收站和地面发射站通过通信网络连接。 地面发射站根据代表所述计算中心的各个服务质量的信息选择主计算中心的导航消息流，并且所述计算中心在所述主计算中心上同步。

公开(公告)号：US20140152497A1

公开(公告)日：2014-06-05

申请号：US14093362

申请日：2013-11-29

Applicant: THALES

Inventor： Sebastien TRILLES

IPC: G01S19/13

CPC classification number: G01S19/13 ,  G01S19/02 ,  G01S19/07 ,  G01S19/21 ,  G01S19/40

Abstract: A method for determining an error in the estimation of time taken to cross the ionosphere by a signal along a vertical sight axis associated with a receiver, the vertical sight axis cutting the ionosphere at a point of interest, the vertical sight axis being an axis passing through the receiver and a satellite of interest, comprises: determining at least two points of cutting of the ionosphere by two sight axes between a satellite and at least two ground stations; determining at least one angle formed by segments going from the point of interest to two of the cutting points; and determining the spatial dispersion of the cutting points with respect to the point of interest on the basis of the angle, by finding the difference with a predetermined angle and taking the average of the difference or differences.

Abstract translation: 用于通过沿着与接收器相关的垂直视轴的信号来估计跨越电离层所花费的时间的误差的方法，垂直瞄准轴在感兴趣的点切割电离层，垂直视轴是通过的轴 通过接收器和感兴趣的卫星，包括：通过卫星和至少两个地面站之间的两个视轴来确定电离层的至少两个切割点; 确定由从兴趣点到两个切割点的分段形成的至少一个角度; 并且通过基于角度来确定相对于兴趣点的切割点的空间色散，通过以预定角度找出差并获取差异或差异的平均值。

公开(公告)号：US20130234886A1

公开(公告)日：2013-09-12

申请号：US13789291

申请日：2013-03-07

Applicant: THALES

Inventor： Sebastien TRILLES ,  Gonzague BERTIN DE LA HAUTIERE ,  Mathias VAN DEN BOSSCHE

IPC: G01S19/21

CPC classification number: G01S19/21 ,  G01S19/40

Abstract: An adaptive method for estimating the electron content of the ionosphere comprises: collecting a set of measurements carried out by a plurality of beacons receiving radio frequency signals transmitted by a plurality of transmitting satellites; computing coordinates of the points of intersection between the transmission axis of the signals and a surface surrounding the Earth, and of a vertical total electron content determined at each of these points; computing a vertical total electron content for each of the nodes of an initial mesh of the surface; a statistical dispersion analysis of the vertical total electron content; a computation step making it possible to define a suitable statistical estimator, or a computation step making it possible to generate a suitable mesh of the surface; a statistical error analysis making it possible to select between a validation of the adaptation of the method and a stopping of the method.

Abstract translation: 用于估计电离层的电子含量的自适应方法包括：收集由多个发射卫星发射的接收射频信号的多个信标执行的一组测量; 计算信号的透射轴和围绕地球的表面之间的交点的坐标，以及在每个点确定的垂直总电子含量; 计算表面初始网格的每个节点的垂直总电子含量; 垂直总电子含量的统计色散分析; 计算步骤，使得可以定义合适的统计估计器，或计算步骤，使得可以生成表面的合适的网格; 统计误差分析使得可以在方法的适应性的验证和方法的停止之间进行选择。