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公开(公告)号：WO2023061836A1
公开(公告)日：2023-04-20
申请号：PCT/EP2022/077759
申请日：2022-10-06
Applicant: SEPTENTRIO N.V.
Inventor： SLEEWAEGEN, Jean-Marie , SCHELLEKENS, Dries
Abstract: According to the invention, the four signals L1CA, L1P, L2P and L2C transmitted by a GPS satellite are received and the carrier phases φLCA and φL2C are estimated from L1CA and L2C in the manner known in the art. In addition, the cross-correlation P between the downconverted signals L1P and L2P is determined, taking into account the delay between said signals. According to the invention, the sign of P is used in a novel way that enables the direct determination of the half-cycle ambiguity AL1CA of the L1CA signal. According to a first embodiment, this is done by downconverting the L2P signal by a replica having a phase derived from φL2C, instead of determining the phase of the L2P replica by a tracking loop as in the prior art. This new approach enables determining AL1CA directly from the sign of P. According to a second embodiment, the phase φL2P of the L2P replica is determined by a tracking loop as in the prior art, and the half-cycle ambiguity AL1CA is determined on the basis of the sign of P and on the basis of the difference between the carrier phases φL2P and φL2C. The invention is equally related to a GPS receiver comprising at least one channel configured for executing the method according to the first or second embodiment.
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公开(公告)号：WO2021252638A1
公开(公告)日：2021-12-16
申请号：PCT/US2021/036632
申请日：2021-06-09
Applicant: SWIFT NAVIGATION, INC.
Inventor： GRGICH, Paul , MAZA, Lloyd , BROCARD, Philippe
Abstract: A method and system for determining a receiver position comprising receiving satellite observations from a set of satellites, determining differenced observations based on the satellite observations, determining an all-in-view position of the receiver based on the differenced observations, determining a set of fault modes each associated with a subset of the differenced observations, for a fault mode of the set of fault modes, determining a fault-tolerant position of the receiver using the subset of differenced observations associated with the fault mode, when the all-in-view position and the fault tolerant position of the receiver for each fault mode are within a solution separation threshold, calculating a protection level associated with the all-in-view position of the receiver.
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公开(公告)号：WO2020214914A1
公开(公告)日：2020-10-22
申请号：PCT/US2020/028680
申请日：2020-04-17
Applicant: SENSE PHOTONICS, INC.
Inventor： DEHLINGER, Dietrich , FINKELSTEIN, Hod
IPC: G01S7/48 , G01S13/10 , G01S17/10 , G01S17/36 , G01S17/88 , G01S19/44 , G01S19/55 , G02B26/06 , G02B27/50
Abstract: A Time of Flight (ToF) system, includes one or more optical elements configured to emit optical signals at two or more measurement frequencies and at least one disambiguation frequency, a detector array comprising a plurality of detectors that are configured to output respective detection signals responsive to light provided thereto, and a circuit configured to control the detector array to obtain a first subset of the detection signals at a first plurality of phase offsets corresponding to the two or more measurement frequencies and to obtain a second subset of the detection signals at a second plurality of phase offsets corresponding to the at least one disambiguation frequency, wherein the second plurality comprises fewer phase offsets than the first plurality.
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4.发明申请
公开(公告)号：WO2019193549A1
公开(公告)日：2019-10-10
申请号：PCT/IB2019/052786
申请日：2019-04-04
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GUNNARSSON, Fredrik , MODARRES RAZAVI, Sara
Abstract: A method performed by a wireless device (110, 210, 410, 1200) is disclosed. The method comprises sending (801), to a network node (120, 115, 215, 220, 225, 460), a request for reference station transfer information. The method comprises obtaining (802) the reference station transfer information for at least one pair of satellites (235, 240). The method comprises determining (803) an integer ambiguity solution associated with a new reference station (230B) based on the obtained reference station transfer information and an integer ambiguity solution associated with a current reference station (230A).
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公开(公告)号：WO2019162839A4
公开(公告)日：2019-08-29
申请号：PCT/IB2019/051347
申请日：2019-02-20
Applicant: MAGELLAN SYSTEMS JAPAN, INC.
Inventor： KONDO, Toru
Abstract: A GNSS receiver has a first antenna and a reference antenna. From the measurement of a carrier phase (I) of GNSS signals at the first antenna and a reference carrier phase (II) at the reference antenna, a single difference (III) is obtained, whereby calculating a double difference (III) = (IV) - (V) between a k-th GNSS satellite and a reference satellite (k=0). The double difference (III) is also predicted using known satellite position information as a function of a differencing vector e k0 between a unit line-of-sight direction vector e k of the k-th satellite and that of the reference satellite e 0 and a base line vector Δ with a second integer bias (VI) - A real time kinetic (RTK) positioning solution is calculated with ambiguity resolution based on the predicted value of (III) and the calculated value of (III). A spoofing is detected if the RTK positioning solution yields Δ=0.
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Patent Agency Ranking
公开(公告)号：WO2019037539A1
公开(公告)日：2019-02-28
申请号：PCT/CN2018/093368
申请日：2018-06-28
Applicant: 中国移动通信有限公司研究院 , 中国移动通信集团有限公司
Abstract: 本公开提供了一种系统信息发送、系统信息接收方法、基站、终端和计算机可读存储介质。系统信息发送方法包括：通过第一系统信息广播实时动态差分RTK全球卫星导航系统GNSS基本信息；在第二系统信息对应的系统信息窗口中广播RTK分段；其中RTK GNSS基本信息用于终端从第二系统信息中读取终端所需的RTK分段。
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公开(公告)号：WO2019019118A1
公开(公告)日：2019-01-31
申请号：PCT/CN2017/094761
申请日：2017-07-27
Applicant: 深圳市大疆创新科技有限公司
IPC: G01S19/44
Abstract: 一种可移动平台的控制方法、设备及可移动平台，该方法包括：通过通讯接口（21，101）接收RTK数据；通过定位接收机（22，102）接收卫星信号；当在第一时刻接收到的RTK数据无效时，将根据所述RTK数据和所述卫星信号控制可移动平台执行导航任务切换为根据所述卫星信号控制可移动平台执行所述导航任务。通过通讯接口（21，101）接收RTK数据，以及定位接收机（22，102）接收卫星信号，当RTK数据无效时，将根据RTK数据和卫星信号控制可移动平台执行导航任务切换为根据卫星信号控制可移动平台执行导航任务，使得可移动平台在RTK数据无效时依然能够完成导航任务，提高了可移动平台执行导航任务的可靠性，保证可移动平台安全运行。
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公开(公告)号：WO2018078795A1
公开(公告)日：2018-05-03
申请号：PCT/JP2016/082065
申请日：2016-10-28
Applicant: 三菱電機株式会社
Abstract: 補正生成部（１１０）が、複数の電子基準点の各々において観測された測位信号（２１１ａ）の搬送波位相に基づいて、測位衛星と複数の評価点の各々との位相擬似距離の補正量を、複数の評価点の各々における評価点補正量（１１１）として生成する。また、リファレンス算出部（１２０）が、測位衛星と複数の評価点の各々との位相擬似距離と、測位衛星と複数の評価点の各々との幾何的距離との差分を複数の評価点の各々におけるリファレンス補正量（１２１）として算出する。また、測距誤差算出部（１３０）が、評価点補正量（１１１）とリファレンス補正量（１２１）との差分からアンビギュイティによるバイアス成分を除去し、複数の評価点の各々における測距誤差（１３１）として算出する。
Abstract translation:
校正生成单元（110），基于所述多个所观察到的定位信号中的每个电子基准点（211A）的载波相位，并且每个定位卫星和多个评估点 相位伪距的校正量，以产生在每个所述多个评估点（111）的评价点校正量。 基准运算部（120），每个所述多个评价中的点的相位的伪距离的几何距离之间的差值，并且每个定位卫星和多个相应的定位卫星的评估点和多个评价点的 作为参考校正量（121）。 此外，距离测量误差计算单元（130）通过从多义性的评价点校正量的差去除偏压构件（111）的参考校正量（121），在每个所述多个评价点的测距误差 它被计算为（131）。
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公开(公告)号：WO2017160617A1
公开(公告)日：2017-09-21
申请号：PCT/US2017/021738
申请日：2017-03-10
Applicant: DEERE & COMPANY
Inventor： ZHANG, Yujie , DAI, Liwen, L. , CHEN, Yiqun
IPC: G01S19/44
Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines wide-lane navigation solutions for the plurality of reference receivers. The system also determines clusters of single difference (SD) wide-lane ambiguity values, each cluster comprising pairs of SD wide-lane floating ambiguities for respective pairs of satellites. A satellite wide-lane bias value for each satellite of a plurality of satellites is initially determined in accordance with fractional portions of the SD wide-lane floating ambiguities in the clusters, and then periodically updated by applying SD wide-lane integer constraints in a Kalman filter. A set of navigation satellite corrections for each satellite, including the satellite wide-lane bias value for each satellite, is generated and transmitted to navigation receivers for use in determining locations of the navigation receivers.
Abstract translation: 卫星校正生成系统从建立的位置处的多个参考接收机接收参考接收机测量信息。 根据接收到的参考接收器测量信息以及参考接收器的建立位置，系统为多个参考接收器确定宽巷导航解决方案。 该系统还确定单差（SD）宽巷歧义值的集群，每个集群包括用于各对卫星的SD宽巷浮动模糊度的对。 根据群集中SD宽巷道浮点模糊度的分数部分初始确定多个卫星的每个卫星的卫星宽巷偏差值，然后通过在卡尔曼中应用SD宽巷整数约束来周期性地更新 过滤。 生成每个卫星的一组导航卫星校正值，包括每个卫星的卫星宽道偏差值，并将其发送给导航接收机，用于确定导航接收机的位置。
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10.发明申请GNSS RECEIVER WITH A CAPABILITY TO RESOLVE AMBIGUITIES USING AN UNCOMBINED FORMULATION 审中-公开具有通过无协调的方式解决风险的能力的GNSS接收机
公开(公告)号：WO2016207176A1
公开(公告)日：2016-12-29
申请号：PCT/EP2016/064339
申请日：2016-06-22
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： LAURICHESSE, Denis
Abstract: The invention discloses a receiver and a method to process navigation signals from one or more GNSS constellation, wherein an observation model and a measurement model allow a direct calculation of the carrier phase ambiguities. More specifically, in a triple frequency implementation, the receiver calculates in turn the extrawidelane, widelane and narrowlane ambiguities. The code and carrier phase biases can also be directly calculated. Thanks to the invention a quicker acquisition and tracking of a precise position, which will also be less noisy than a prior art solution, especially in some embodiments of the invention using a RAIM and/or a gap-bridging function. Also, code smoothing using the Doppler and low latency clock synchronization allow to decrease the noise levels of the precise point navigation solutions.
Abstract translation: 本发明公开了一种用于处理来自一个或多个GNSS星座的导航信号的接收机和方法，其中观测模型和测量模型允许直接计算载波相位模糊度。 更具体地说，在三重频率实现中，接收机依次计算出外延，宽边和窄范围的模糊度。 代码和载波相位偏差也可以直接计算。 由于本发明，更快地获取和跟踪精确位置，其也将比现有技术的解决方案噪声更小，特别是在使用RAIM和/或间隙桥接功能的本发明的一些实施例中。 此外，使用多普勒和低延迟时钟同步的代码平滑允许降低精确点导航解决方案的噪声水平。
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