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公开(公告)号：WO2019058119A1
公开(公告)日：2019-03-28
申请号：PCT/GB2018/052680
申请日：2018-09-20
摘要： A system is disclosed for determining a physical metric such as position. The system comprises a local signal generator (8) configured to provide a local signal and a receiver (4) configured to receive a signal having properties corresponding to those in a signal transmitted by a trusted remote source. An inertial measurement unit (12) is configured to provide a measured or assumed movement of the receiver. A correlator (6) is configured to provide a correlation signal by correlating the local signal with the received signal. A motion compensation unit (14) is configured to provide motion compensation of at least one of the local signal, the received signal, and the correlation signal based on the measured or assumed movement. A signal analysis unit (16) is configured to determine whether the received signal includes a component received in a direction that is different to a line-of-sight direction between the receiver and the trusted remote source, wherein the determination is based on the correlation signal. Finally, a metric determination unit or positioning unit (20) is configured to determine a physical metric associated with the receiver, such as its position, based on the determination made by the signal analysis unit (16).
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公开(公告)号：WO2020074921A1
公开(公告)日：2020-04-16
申请号：PCT/GB2019/052901
申请日：2019-10-11
摘要： There is disclosed a computer-implemented method performed in a tracking system for tracking the motion of a body, as a function of time, the method comprising: (a) during a first time period, obtaining first data related to the motion of a body from at least one primary positioning unit, wherein said at least one primary positioning unit is mounted on a first platform carried on the body, or wherein said at least one primary positioning unit is separate to the body, said primary positioning unit being operational during the first time period; (b) during the first time period, obtaining second data from one or more secondary sensors configured to make measurements from which position or movement may be determined, said one or more secondary sensors being mounted on one or more second platforms carried on the body; (c) generating first training data comprising the first data and second data; (d) during a second time period, obtaining third data from the one or more secondary sensors, and; (e) analysing the third data to estimate at least one first metric related to the motion of the body during the second time period using a first algorithm trained using the first training data. A tracking system for tracking the motion of a body, as a function of time, is also disclosed.
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公开(公告)号：WO2019063983A1
公开(公告)日：2019-04-04
申请号：PCT/GB2018/052716
申请日：2018-09-25
摘要： A method for performing in a positioning, navigation, tracking, frequency- measuring, or timing system is provided. The method comprises: providing first and second estimates of at least one system parameter during a first time period, wherein the at least one system parameter has a true value and/or true evolution over time during the first time period; providing a local signal; receiving, at a receiver, a signal from a remote source; providing a correlation signal by correlating the local signal with the received signal; providing amplitude and/or phase compensation of at least one of the local signal, the received signal and the correlation signal based on each of the first and second estimates so as to provide first and second amplitude-compensated and/or phase-compensated correlation signals corresponding to the first and second estimates of the at least one system parameter during the first time period, and; determining which of the first and second estimates is nearer the true value and/or true evolution over time of the at least one system parameter during the first time period, based on a comparison between the first and second amplitude-compensated and/or phase- compensated correlation signals. A computer readable medium and system are also disclosed.
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4.发明申请
公开(公告)号：WO2019008327A1
公开(公告)日：2019-01-10
申请号：PCT/GB2018/051803
申请日：2018-06-28
IPC分类号： G01S19/23 , G01S19/25 , G01S5/02 , G01S19/29 , G01S19/26 , G01S19/31 , G01S19/47 , G01S19/24 , G01C21/26
摘要： A positioning device (4) is disclosed comprising at least one antenna (14, 16) for receiving ranging signals, such as GNSS signals. The device comprises a local oscillator (18) for providing a local frequency or phase reference and an inertial sensor (22) for measuring a movement of the device. A processor (36) is provided for performing calculations. The device can receive a first reference signal at a known or predictable frequency or phase. A local oscillator offset determination module (26) is provided to calculate an offset to the received frequency or the received phase based on the movement of the receiver in the direction of the first reference source. A local signal generator (28) can then use the local frequency or phase reference from the local oscillator (18), and the offset calculated by the local oscillator offset determination module (26), to provide a local signal using a local signal generator (28). The local signal can be correlated against a received ranging signal for use in positioning calculations performed by a positioning calculator (34).
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5.发明申请A METHOD, APPARATUS, COMPUTER PROGRAM, CHIP SET, OR DATA STRUCTURE FOR CORRELATING A DIGITAL SIGNAL AND A CORRELATION CODE 审中-公开用于关联数字信号和相关代码的方法，装置，计算机程序，码片集或数据结构
公开(公告)号：WO2017163042A1
公开(公告)日：2017-09-28
申请号：PCT/GB2017/050778
申请日：2017-03-21
摘要： A method, apparatus, computer program, chip set, or data structure for correlating a digital signal and a correlation code. A method, apparatus, computer program, data structure, signal relating to: causing correlation of a digital signal provided by a receiver with a motion-compensated correlation code, wherein the motion-compensated correlation code is a correlation code that has been compensated before correlation using one or more phasors dependent upon an assumed or measured movement of the receiver.
摘要翻译： 用于使数字信号和相关码相关的方法，装置，计算机程序，芯片组或数据结构。 涉及以下的方法，设备，计算机程序，数据结构信号：引起接收机提供的数字信号与运动补偿相关码的相关，其中运动补偿相关码是相关性之前已经补偿的相关性码 使用一个或多个相量取决于接收器的假定或测量的移动。
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6.发明申请A METHOD, APPARATUS, COMPUTER PROGRAM, CHIP SET, OR DATA STRUCTURE FOR CORRELATING A DIGITAL SIGNAL AND A CORRELATION CODE 审中-公开用于关联数字信号和相关代码的方法，装置，计算机程序，码片集或数据结构
公开(公告)号：WO2017163041A1
公开(公告)日：2017-09-28
申请号：PCT/GB2017/050777
申请日：2017-03-21
摘要： A method, apparatus, computer program, data structure, signal relating to: causing correlation of a digital signal provided by a receiver with a motion-compensated correlation code, wherein the motion-compensated correlation code is a correlation code that has been compensated before correlation using one or more phasors dependent upon an assumed or measured movement of the receiver.
摘要翻译： 用于使由接收器提供的数字信号与运动补偿相关码相关的方法，设备，计算机程序，数据结构信号，其中运动补偿相关码是 相关性代码已经在使用依赖于接收机的假定或测量的移动的一个或多个相量进行相关之前被补偿。
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