METHOD AND DEVICE FOR IMPROVING POSITIONING ACCURACY IN THE ACROSS TRACK AXIS FOR A ROAD NAVIGATION APPLICATION
    71.
    发明申请
    METHOD AND DEVICE FOR IMPROVING POSITIONING ACCURACY IN THE ACROSS TRACK AXIS FOR A ROAD NAVIGATION APPLICATION 审中-公开
    用于提高道路导航应用的交叉路径中的定位精度的方法和装置

    公开(公告)号:WO2009062747A3

    公开(公告)日:2009-08-06

    申请号:PCT/EP2008009692

    申请日:2008-11-15

    CPC classification number: G01C21/26 G01S19/42

    Abstract: The invention relates to a method for improving positioning accuracy in the across track axis for a road navigation application using a Global Navigation Satellite System - GNSS, comprising - receiving signals from n satellite of the GNSS in view (S10), - processing a n-dimensional vector y (S12), which represents the difference between the ranges observed from the n satellite of the GNSS in view, and the theoretical range from an arbitrary chosen linearization space/time point and the n satellite in view, - estimating a vector x (S 14) representing the user space/time position respective to the linearization space/time point by using the processed vector y, a satellite geometric matrix G, and a weighting matrix W equal to the invert of the variance of user ranging errors, - measuring the accuracy of positioning (S16) along a direction D perpendicular to a vehicle motion by the variance of the expression (Dt x), and - finding for the direction D the weighting matrix W(D) (S18) that minimizes the variance of the expression (Dt x).

    Abstract translation: 本发明涉及一种用于改善使用全球导航卫星系统-GIS的道路导航应用的跨轨道轴的定位精度的方法,包括: - 从GNSS的卫星接收信号(S10), - 处理n- 表示从视野内的GNSS的n个卫星观测到的范围与来自任意选择的线性化空间/时间点和n个卫星的理论范围的三维向量y(S12), - 估计向量x (S14),通过使用处理向量y表示与线性化空间/时间点相对应的用户空间/时间位置,卫星几何矩阵G和等于用户测距误差的方差的反转的加权矩阵W, 通过表达式(Dt x)的方差,沿垂直于车辆运动的方向D测量定位精度(S16),并且找出方向D的加权矩阵W(D)(S18),其中min 模拟表达式(Dt x)的方差。

    MOBILE-UNIT POSITIONING DEVICE
    72.
    发明申请
    MOBILE-UNIT POSITIONING DEVICE 审中-公开
    移动单元定位设备

    公开(公告)号:WO2008108194A3

    公开(公告)日:2008-12-18

    申请号:PCT/JP2008053134

    申请日:2008-02-19

    CPC classification number: G01S19/42 G01S19/48 G01S19/52

    Abstract: In a mobile-unit positioning device, phases of pseudo noise codes carried on satellite s.ignals from satellites are observed at a mobile unit to measure a position of the mobile unit. A pseudo distance between one of the satellites and the mobile unit is measured for every satellite during a stop of the mobile unit using an observed value of the phase acquired during a stop of the mobile unit. An error index value indicating an error of the measured pseudo distance is computed based on the pseudo distances measured at points in time during a stop of the mobile unit. A weighting factor is determined based on the index value computed for every satellite. A weighted positioning computation using the determined weighting factor is performed to determine a position of the mobile unit during movement using an observed value of the phase acquired during movement. A further device is proposed wherein the position is measured using a similar method, however, in this case, the error "index is based on an error of a computed mobile unit speed, rather than on the pseudo distance.

    Abstract translation: 在移动单元定位设备中,在移动单元处观察到来自卫星的卫星信号携带的伪噪声码的相位,以测量移动单元的位置。 在移动单元的停止期间,使用在移动单元的停止期间获取的相位的观测值来测量卫星和移动单元之间的伪距离。 基于在移动单元的停止期间的时间点测量的伪距离来计算指示所测量的伪距离的误差的误差索引值。 基于为每个卫星计算的指标值确定加权因子。 执行使用所确定的加权因子的加权定位计算,以使用在运动期间获取的相位的观测值来确定移动单元在移动期间的位置。 提出了一种另外的装置,其中使用类似的方法测量位置,然而,在这种情况下,误差“索引基于所计算的移动单元速度的误差,而不是基于伪距离。

    METHOD AND APPARATUS FOR USING MULTIPATH SIGNAL IN GPS ARCHITECTURE
    73.
    发明申请
    METHOD AND APPARATUS FOR USING MULTIPATH SIGNAL IN GPS ARCHITECTURE 审中-公开
    在GPS体系结构中使用多路径信号的方法和设备

    公开(公告)号:WO2008092008A3

    公开(公告)日:2008-09-12

    申请号:PCT/US2008051920

    申请日:2008-01-24

    CPC classification number: G01S19/47 G01S19/22 G01S19/42 G01S19/428 G01S19/45

    Abstract: A method and apparatus for constructive use of a multipath signal in GPS signal processing is provided. In one embodiment, the method includes: a) receiving a GPS signal at a mobile object from a satellite vehicle, b) determining a distance characteristic relating a reflecting object to the mobile object, c) determining at least one inertial characteristic associated with the mobile object, d) predicting at least one multipath signal characteristic associated with reflection of the GPS signal by the reflecting object toward the mobile object, and e) determining the GPS signal received in a) includes a multipath signal associated with reflection of the GPS signal by the reflecting object toward the mobile object. In one embodiment, the apparatus includes: a GPS receiver, a storage device, an inertial measurement device, and a controller. In another embodiment, the apparatus also includes a distance measurement device.

    Abstract translation: 提供了一种用于在GPS信号处理中建设性地使用多径信号的方法和装置。 在一个实施例中,该方法包括:a)从人造卫星接收移动物体处的GPS信号,b)确定将反射物体与移动物体相关的距离特征,c)确定与移动物体相关联的至少一个惯性特征 d)预测与反射物体朝向移动物体反射GPS信号相关的至少一个多径信号特征,以及e)确定在a)中接收的GPS信号包括与GPS信号的反射相关的多路径信号, 反射物体朝向移动物体。 在一个实施例中,该装置包括:GPS接收器,存储装置,惯性测量装置和控制器。 在另一个实施例中,该装置还包括距离测量装置。

    TIME-BASED EPHEMERIS IDENTITY IN ASSISTANCE DATA AND ASSISTANCE DATA REQUEST MESSAGES
    75.
    发明申请
    TIME-BASED EPHEMERIS IDENTITY IN ASSISTANCE DATA AND ASSISTANCE DATA REQUEST MESSAGES 审中-公开
    辅助数据和辅助数据请求信息中的基于时间的EPHEMERIS身份

    公开(公告)号:WO2008053308A2

    公开(公告)日:2008-05-08

    申请号:PCT/IB2007/003243

    申请日:2007-10-26

    CPC classification number: G01S19/258 G01S19/05

    Abstract: A module (software or ASIC) for use in a serving mobile Location Centre (SMLC) or a mobile station having a GPS receiver (or an A-GPS receiver) for determining an ITOW for a CNAV-1 signal. Also provided is a module for a mobile with GPS (or A-GPS receiver) so that the mobile can use the ITOW (either the ITOW provided with the CNAV-2, or that calculated for the CNAV-1) to uniquely identify ephemeris information in a request for assistance message. Also provided is a module for a SMLC by which the SMLC can use the IOD fields in the assistance data messages in a way that uniquely identifies the associated ephemeris information.

    Abstract translation: 用于在服务移动定位中心(SMLC)中使用的模块(软件或ASIC)或具有用于确定CNAV-1信号的ITOW的GPS接收机(或A-GPS接收机)的移动台。 还提供了一种用于具有GPS(或A-GPS接收机)的移动设备的模块,使得移动设备可以使用ITOW(与CNAV-2一起提供的ITOW或为CNAV-1计算的ITOW)唯一地标识星历信息 在请求援助信息。 还提供了用于SMLC的模块,通过该模块,SMLC可以以唯一地标识相关星历信息的方式在辅助数据消息中使用IOD字段。

    A METHOD AND APPARATUS FOR DETERMINING THE LOCATION OF A UNIT USING NEIGHBOR LISTS
    76.
    发明申请
    A METHOD AND APPARATUS FOR DETERMINING THE LOCATION OF A UNIT USING NEIGHBOR LISTS 审中-公开
    用于确定使用邻居位置的单元的位置的方法和装置

    公开(公告)号:WO2005065149A3

    公开(公告)日:2006-12-14

    申请号:PCT/US2004041516

    申请日:2004-12-09

    CPC classification number: G01S5/14 G01S5/0289 G06Q10/087 H04W8/18 H04W64/00

    Abstract: A method and location determination module is provided for determining a location of one of a plurality of units (16A, 16B, 16C, 12, 14) using neighbor lists (212). Each unit is communicatively coupled to at least some of the other plurality of units (16A, 16B, 16C, 12, 14), where at least some of the plurality of units (16A, 16B, 16C, 12, 14) are reference units, whose locations are known. The units communicate with other (16A, 16B, 16C, 12, 14) nearby units within communication range, to establish neighbor lists (212). A unit to be located then identifies an aggregate value corresponding to the number of occurrences of the reference units in the neighbor list (212) of the unit to be located and the neighbor lists (212) of each of a group of associated units. The location of the unit to be located is then determined, based upon the known locations of the reference units and the number of identified occurrences of the reference units in the corresponding neighbor lists (212).

    Abstract translation: 提供一种方法和位置确定模块,用于使用邻居列表(212)确定多个单元(16A,16B,16C,12,14)之一的位置。 每个单元通信地耦合到其他多个单元(16A,16B,16C,12,14)中的至少一些,其中多个单元(16A,16B,16C,12,14)中的至少一些是参考单元 ,其位置已知。 单元与通信范围内的其他(16A,16B,16C,12,14)附近的单元进行通信,建立邻居列表(212)。 然后,要定位的单元识别与要定位的单元的邻居列表(212)中的参考单元的出现次数和一组关联单元中的每一个的邻居列表(212)相对应的聚合值。 然后基于参考单元的已知位置和相应邻居列表(212)中的参考单元的识别出现次数来确定要定位的单元的位置。

    METHOD AND APPARATUS FOR VALIDATING A POSITION IN A SATELLITE POSITIONING SYSTEM USING RANGE-RATE MEASUREMENTS
    77.
    发明申请
    METHOD AND APPARATUS FOR VALIDATING A POSITION IN A SATELLITE POSITIONING SYSTEM USING RANGE-RATE MEASUREMENTS 审中-公开
    使用范围测量来确定卫星定位系统中的位置的方法和装置

    公开(公告)号:WO2006130515A2

    公开(公告)日:2006-12-07

    申请号:PCT/US2006020568

    申请日:2006-05-26

    CPC classification number: G01S19/42

    Abstract: Method and apparatus for validating an initial position in a satellite positioning system using range-rate measurements is described. In one example, range-rate measurements are obtained at the remote receiver with respect to a plurality of satellites. Expected range-rates are computed with respect to the plurality of satellites using the initial position. Single differences are computed using the range-rate measurements. Expected single differences are computed using the expected range-rates. Single difference residuals are computed between the single differences and the expected single differences. The single difference residuals are compared to a threshold. The initial position may be deemed valid if the absolute value of each of the single difference residuals is less than or equal to the threshold. A valid initial position may be used to fix the pseudorange integers.

    Abstract translation: 描述了使用范围速率测量来验证卫星定位系统中的初始位置的方法和装置。 在一个示例中,距远程接收机相对于多个卫星获得距离率测量。 使用初始位置相对于多个卫星计算预期的距离率。 使用范围速率测量计算单一差异。 预期的单一差异使用预期的范围速率计算。 在单一差异和预期的单一差异之间计算单个差异残差。 将单个差值残差与阈值进行比较。 如果每个单一差分残差的绝对值小于或等于阈值,则初始位置可以被认为是有效的。 可以使用有效的初始位置来固定伪距整数。

    GPS-BASED UNDERWATER CABLE POSITIONING SYSTEM
    80.
    发明申请
    GPS-BASED UNDERWATER CABLE POSITIONING SYSTEM 审中-公开
    基于GPS的水下电缆定位系统

    公开(公告)号:WO03100451A2

    公开(公告)日:2003-12-04

    申请号:PCT/US0316260

    申请日:2003-05-22

    Abstract: A GPS-based underwater cable positioning system for use in determining the shape and position of hydrophone streamers towed underwater behind survey vessels involved in marine seismic prospecting. The system includes a plurality of surface units towed behind the vessel. Each surface unit includes a GPS receiver to receive radio frequency GPS signals and to determine its positions. Each surface unit also has an acoustic transmitter to transmit an acoustic message signal representing its position and an optional time stamp into the water. Acoustic receiver units, attached spaced apart locations along one or more streamer cables, each include an acoustic receiver to receive the acoustic message signals from the surface units and to determine its position from the message signals. To augment the message signals from the surface units at locations distant from the surface units, acoustic transceiver units may be used. The acoustic transceiver units are attached to the streamer cables at ranges between the surface units and distant acoustic receiver units. The acoustic transceiver units each include an acoustic receiver that performs as the receivers in the acoustic receiver units and an acoustic transmitter to transmit acoustic message signals representing its position and an optional time stamp into the water to be received by the acoustic receiver units. In this way, the positions and shapes of towed streamer cables can be determined.

    Abstract translation: 一种基于GPS的水下电缆定位系统,用于确定在涉及海洋地震勘探的测量船舶后方水下拖缆拖缆的形状和位置。 该系统包括拖在容器后面的多个表面单元。 每个表面单元包括接收射频GPS信号并确定其位置的GPS接收器。 每个表面单元还具有声发射器,以将表示其位置的声学信号信号和可选的时间戳传输到水中。 声学接收器单元,沿着一个或多个拖缆电缆连接的间隔开的位置,每个包括声接收器,用于从表面单元接收声学信号信号,并从消息信号确定其位置。 为了从远离地面单元的位置处的表面单元增加消息信号,可以使用声收发器单元。 声学收发器单元在表面单元和远程声学接收器单元之间的范围内连接到拖缆电缆。 声收发器单元各自包括作为声接收器单元中的接收器执行的声接收器,以及声发射器,用于将表示其位置的声消息信号和可选时间戳发送到要由声接收器单元接收的水中。 以这种方式,可以确定拖缆拖缆的位置和形状。

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