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公开(公告)号：US12050280B2
公开(公告)日：2024-07-30
申请号：US17639105
申请日：2020-08-27
CPC分类号： G01S5/0246 , G01S5/14 , G01S5/30 , G01S11/10 , G01S11/14
摘要： In a positioning system, a plurality of transmitter units (2, 3, 4, 5) transmit respective transmitter-specific identification signals at intervals, which are received at a mobile receiver unit (7). A processing system (7; 9) identifies the transmitter unit that transmitted each received identification signal, and, for each signal, determines range data from time of arrival data and determines distance data from Doppler shift information. The range data and distance data are compared to determine range error data. A position estimate for the mobile receiver unit (7) is determined by solving an optimisation problem using range estimates determined for the plurality of transmitter units, weighted in dependence on the range error data.
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公开(公告)号：US09945940B2
公开(公告)日：2018-04-17
申请号：US14354833
申请日：2012-11-13
发明人： Guohua Min , Mark Schneider
CPC分类号： G01S11/10 , G01S5/08 , H04W64/003
摘要： Position and orientation tracking systems and methods include a transmitting antenna transmitting a radio frequency (RF) signal. At least one receiving antenna acquires the RF signal. One of the at least one receiving antenna and the transmitting antenna is designated a reference antenna. A processing unit determines a phase difference between the RF signal received by each receiving antenna and the reference antenna. The processing unit computes a position of the transmitting antenna with respect to the at least one receiving antenna in response to the phase difference determined for each receiving antenna.
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公开(公告)号：US09860765B2
公开(公告)日：2018-01-02
申请号：US14968321
申请日：2015-12-14
发明人： Ahmed Ragab Elsherif , Qinghai Gao
IPC分类号： H04W24/02 , H04B7/04 , H04L1/00 , H04L5/00 , H04B7/0417 , H04B7/0452 , H04B7/06 , H04L25/02 , G01S11/10
CPC分类号： H04W24/02 , G01S11/10 , H04B7/0417 , H04B7/0452 , H04B7/0617 , H04L1/0009 , H04L5/006 , H04L25/0222
摘要： Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a first wireless device, beamforming information from a station over a period of time, the beamforming information including a feedback signal-to-noise ratio (SNR) value and compressed feedback matrix. The method also includes determining one or more SNR gradient metrics for the station based at least in part on the received feedback SNR values and the received compressed feedback matrices.
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公开(公告)号：US20170272184A1
公开(公告)日：2017-09-21
申请号：US15073112
申请日：2016-03-17
申请人： ARCOM DIGITAL, LLC
发明人： Victor M. Zinevich
IPC分类号： H04B17/345 , G01S5/02
CPC分类号： H04B17/345 , G01R31/08 , G01S3/8022 , G01S5/02 , G01S5/021 , G01S5/06 , G01S11/10 , H04B7/01
摘要： The invention involves using Doppler shift to locate a leak of a signal from an HFC network. The leaked signal includes a component having a nominal frequency. The invention comprises: (a) moving along a drive route in the area of the network; (b) recording a speed at a number of drive-route points along the drive route; (c) at each point, receiving the component at a received frequency; (d) for each point, measuring the received frequency; (e) for each point, determining a measured Doppler shift from a difference between the received and nominal frequencies; (f) estimating a zero Doppler shift and a zero Doppler shift point based on the measured Doppler shifts; and (g) estimating the leak location based on the estimated zero Doppler shift point.
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公开(公告)号：US09666040B2
公开(公告)日：2017-05-30
申请号：US13926828
申请日：2013-06-25
IPC分类号： B60R25/10 , B60Q1/00 , G08B13/00 , G08B21/00 , G08B5/22 , H04Q1/30 , B60R25/00 , G05B19/00 , G06F7/00 , G08B6/00
摘要： A keyless entry device includes a user interface configured to receive an input from a user of the device; a haptic output device configured to generate a haptic effect to the user; and a processor configured to receive a command based on the input from the user through the user interface, to communicate the command to another entity, to receive information from the another entity, and to output a control signal to a drive circuit coupled to the haptic output device to cause the haptic output device to generate the haptic effect to the user based on the information received from the another entity.
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6.发明申请公开(公告)号：US20170032157A1
公开(公告)日：2017-02-02
申请号：US15295103
申请日：2016-10-17
发明人： John R. Tuttle
IPC分类号： G06K7/10
CPC分类号： G06K7/10316 , G01S11/10 , G01S13/756 , G06K7/0008 , G06K7/10019 , G06K7/10366 , H04Q2213/13095
摘要： Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.
摘要翻译： 使用附在对象上的射频识别（RFID）标签来确定物理对象的运动参数的系统和方法。 在一个实施例中，在射频识别（RFID）系统中实现的方法包括基于从RFID标签接收的射频信号中检测多普勒频移来确定RFID标签的运动参数。
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公开(公告)号：US20160377709A1
公开(公告)日：2016-12-29
申请号：US14790776
申请日：2015-07-02
申请人： Aviacomm Inc.
发明人： Hans Wang , Tao Li , Binglei Zhang , Shih Hsiung Mo
CPC分类号： G01S11/12 , G01S11/08 , G01S11/10 , G01S13/867 , G01S2013/9357 , G01S2013/936 , G01S2013/9364 , G01S2013/9367
摘要： An object-tracking system can compute a distance to a target object. During operation, the system can use a radio antenna to receive a first radio signal pattern from a direction of a target object. The system determines a time interval from the received radio signal pattern, and determines a velocity of the local system. The system then computes a distance to the target object based on the time interval and the velocity of the object-tracking device.
摘要翻译： 对象跟踪系统可以计算到目标对象的距离。 在操作期间，系统可以使用无线电天线从目标对象的方向接收第一无线电信号模式。 该系统从接收到的无线电信号模式确定时间间隔，并确定本地系统的速度。 然后，系统基于物体跟踪装置的时间间隔和速度计算到目标物体的距离。
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公开(公告)号：US09477863B2
公开(公告)日：2016-10-25
申请号：US14132482
申请日：2013-12-18
发明人： John R. Tuttle
CPC分类号： G06K7/10316 , G01S11/10 , G01S13/756 , G06K7/0008 , G06K7/10019 , G06K7/10366 , H04Q2213/13095
摘要： Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.
摘要翻译： 使用附在对象上的射频识别（RFID）标签来确定物理对象的运动参数的系统和方法。 在一个实施例中，在射频识别（RFID）系统中实现的方法包括基于从RFID标签接收的射频信号中检测多普勒频移来确定RFID标签的运动参数。
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公开(公告)号：US20160091601A1
公开(公告)日：2016-03-31
申请号：US14870644
申请日：2015-09-30
申请人： Lawrence J. Karr
发明人： Lawrence J. Karr
CPC分类号： H01Q3/02 , G01S3/58 , G01S11/10 , G01S13/762
摘要： An improved two-way tagging tracking and locating system uses time of arrival (TOA), Doppler, and angle of arrival (AOA) in conjunction with remote tags and a locator. The locator's antenna is tethered to a central point, and moved in a constrained motion so that it describes a roughly circular horizontal path. The locator transmits and receives sets of complex radio sequences to/from the tag(s) so that the tag(s) emit signals which are phase, chip, and symbol coherent with the received locator signals. This enables the locator to determine the distances and Doppler shifts between itself and the tag(s) at various positions in its path such that, by post correlation processing of complex captured signal sequences, aims a virtual phased array antenna at the tag(s), resulting in enhanced distance and direction measurements. The angular position of the orbiting locator's antenna may be measured using an electronic compass packaged with the antenna.
摘要翻译： 改进的双向标签跟踪和定位系统结合远程标签和定位器使用到达时间（TOA），多普勒和到达角（AOA）。 定位器的天线被束缚到中心点，并且以有限的运动移动，使得它描述了一个大致圆形的水平路径。 定位器向/从标签发送和接收复合无线电序列集合，使得标签发射与接收到的定位信号相位相关的芯片和码元的信号。 这使得定位器能够确定其与其路径中各个位置处的标签之间的距离和多普勒频移，使得通过复合捕获信号序列的后置相关处理，将虚拟相控阵列天线瞄准标签， ，从而增加距离和方向测量。 轨道定位器天线的角位置可以使用与天线一起包装的电子罗盘进行测量。
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公开(公告)号：US09239376B2
公开(公告)日：2016-01-19
申请号：US13269426
申请日：2011-10-07
CPC分类号： G01S11/10 , G01C21/165 , G01S5/0263
摘要： Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources.
摘要翻译： 多普勒辅助惯性导航（DAIN）有助于确定在高度阻塞的GPS / GNSS环境中工作的移动设备的位置，速度和方向。 本发明使用与惯性加速度计和环境传感器结合的各种信号来测量移动装置的多普勒频移，以提供不需要外部基础设施的自主定位和导航能力，从而提供高精度，高分辨率的定位信息 或信号源的先验知识。
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