公开(公告)号：US20160302041A1

公开(公告)日：2016-10-13

申请号：US15095153

申请日：2016-04-10

Applicant: Golba LLC

Inventor： Mehran Moshfeghi

IPC: H04W4/02 ,  H04B5/00 ,  G06K19/07 ,  G01S5/02 ,  G06Q20/40 ,  G06Q20/32 ,  H04W4/00 ,  G01S19/48

CPC classification number: H04W4/02 ,  G01S5/0009 ,  G01S5/021 ,  G01S5/0236 ,  G01S5/0257 ,  G01S19/48 ,  G06K19/0712 ,  G06Q20/202 ,  G06Q20/206 ,  G06Q20/3224 ,  G06Q20/409 ,  H04B5/0043 ,  H04W4/021 ,  H04W4/027 ,  H04W4/029 ,  H04W4/80 ,  H04W64/00 ,  Y02B70/30 ,  Y02D70/00

Abstract: A method and system is described where a plurality of position reference devices use short-range wireless communication protocols to transmit positioning assistance data to nearby mobile devices, and the mobile devices use the assistance data to re-calibrate their positioning systems. In some embodiments, mobile device includes an accelerometer and the accelerometer measurements are used to calculate an updated velocity of the mobile device and an updated position of the mobile device based on the accelerometer measurements and previous velocity and position of the mobile device. The short-range communication methods include NFC, RFID, Bluetooth®, short-range 802.11, Wi-Fi Direct, and high frequency focused beams such as 60 GHz. The position reference devices are passive or active NFC tags, passive or active RFID tags, other devices that include such tags as their components, Bluetooth®-enabled devices, 60 GHz-enabled devices, and 802.11 access points that can lower their transmit power.

公开(公告)号：US09467803B2

公开(公告)日：2016-10-11

申请号：US13704130

申请日：2012-09-27

Applicant: Iana Siomina ,  Yang Zhang

Inventor： Iana Siomina ,  Yang Zhang

IPC: H04W4/02 ,  G01S5/02

CPC classification number: H04W4/02 ,  G01S5/0205 ,  G01S5/021 ,  G01S5/0215

Abstract: Techniques are disclosed for determining measurement uncertainty of and/or multipath effects on positioning measurements, based on the residual deviations between timing measurements and high-accuracy location results. An example method begins with collecting (510) a plurality of timing measurements or ranging measurements, or both, each measurement corresponding to at least one anchor node antenna having a known location. A measurement deviation is determined (520) for each measurement by comparing the measurement to a corresponding reference location. The measurement deviations are used (530) to estimate measurement quality for one or more subsequent positioning measurements, and/or uncertainty associated with one or more subsequent positioning estimates, and/or an effect of multipath on subsequent positioning measurements or estimates. In some embodiments, a covariance matrix is calculated from the measurement deviations and is used to determine statistical information or multipath effects for measurements corresponding to a particular one of the anchor node antennas.

Abstract translation: 公开了基于定时测量和高精度位置结果之间的残余偏差来确定定位测量的测量不确定性和/或多径效应的技术。 示例性方法开始于对具有已知位置的至少一个锚节点天线收集（510）多个定时测量或测距测量或两者，每个测量对应于至少一个锚节点天线。 通过将测量与相应的参考位置进行比较来确定每个测量的测量偏差（520）。 使用测量偏差（530）来估计一个或多个后续定位测量的测量质量，和/或与一个或多个随后的定位估计相关联的/或不确定性，和/或多路径对随后的定位测量或估计的影响。 在一些实施例中，根据测量偏差计算协方差矩阵，并且用于确定对应于锚节点天线中的特定一个的测量的统计信息或多径效应。

公开(公告)号：US20160295360A1

公开(公告)日：2016-10-06

申请号：US15181057

申请日：2016-06-13

Applicant: Skyhook Wireless, Inc.

Inventor： Russel K. Jones ,  Farshid Alizadeh-Shabdiz ,  Edward J. Morgan ,  Michael G. Shean

IPC: H04W4/02 ,  G01S5/02 ,  G01S19/46 ,  H04W48/16

CPC classification number: H04W64/003 ,  G01S5/02 ,  G01S5/0205 ,  G01S5/021 ,  G01S5/0226 ,  G01S5/0242 ,  G01S5/0252 ,  G01S5/0284 ,  G01S19/13 ,  G01S19/14 ,  G01S19/46 ,  G06Q10/0875 ,  G08G1/20 ,  H04W4/02 ,  H04W16/18 ,  H04W24/00 ,  H04W48/08 ,  H04W48/16 ,  H04W64/00 ,  H04W84/10 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08 ,  Y10S707/99936

Abstract: In one embodiment, scanning data is received for wireless access points whose wireless signals were observed by the one or more scanning devices in a target area. For each group of scanning data that shares a common identifier of a Wi-Fi access point, a centroid of the scanning data is determined, a set of scanning data of the group that exceeds a threshold distance from the centroid is designated as having potential error, and a location of the Wi-Fi access point is calculated. The calculated location of the Wi-Fi access point for each group of scanning data is stored in a reference database. Upon receiving a request for a location of a mobile device, an identity of one or more Wi-Fi access points in range of the mobile device is determined, and the location of the mobile device is computed using calculated locations from the reference database.

Abstract translation: 在一个实施例中，对于其目标区域中的一个或多个扫描设备观察到无线信号的无线接入点，接收扫描数据。 对于共享Wi-Fi接入点的共同标识符的每组扫描数据组，确定扫描数据的质心，超过与质心的阈值距离的组的一组扫描数据被指定为具有潜在错误 ，并计算Wi-Fi接入点的位置。 每组扫描数据的Wi-Fi接入点的计算位置都存储在参考数据库中。 在接收到对移动设备的位置的请求后，确定移动设备范围内的一个或多个Wi-Fi接入点的身份，并且使用来自参考数据库的计算的位置来计算移动设备的位置。

公开(公告)号：US20160291126A1

公开(公告)日：2016-10-06

申请号：US15185567

申请日：2016-06-17

Applicant: ZIH Corp.

Inventor： Robert W. Boyd

IPC: G01S5/06 ,  H04L5/00 ,  G01S5/02 ,  H04W24/08

CPC classification number: G01S5/06 ,  G01S5/021 ,  G01S5/0221 ,  G01S5/10 ,  H04L5/0048 ,  H04W24/08

Abstract: An example method includes identifying a link that is one of a plurality of links of a wireless locating system, the link being defined by at least a reference signal source, a first receiver unit, and a second receiver unit; determining a reliability metric for signal transmission via a link based on first link data, the link data describing first reference signal events for the link; and modifying the reliability metric based on second link data describing second reference signal events for the link, wherein modifying the reliability metric includes: determining whether the second link data is consistent with the first link data; adjusting the reliability metric using a first function when the second link data is consistent with the first link data; and adjusting the reliability metric using a second function different than the first function when the second link data is inconsistent with the second link data.

Abstract translation: 示例性方法包括识别作为无线定位系统的多个链路之一的链路，所述链路至少由参考信号源，第一接收机单元和第二接收机单元定义; 基于第一链路数据确定经由链路的信号传输的可靠性度量，所述链路数据描述所述链路的第一参考信号事件; 以及基于描述所述链路的第二参考信号事件的第二链路数据来修改所述可靠性度量，其中修改所述可靠性度量包括：确定所述第二链路数据是否与所述第一链路数据一致; 当所述第二链接数据与所述第一链接数据一致时，使用第一功能来调整所述可靠性度量; 以及当所述第二链路数据与所述第二链路数据不一致时，使用与所述第一功能不同的第二功能来调整所述可靠性度量。

公开(公告)号：US09455762B2

公开(公告)日：2016-09-27

申请号：US14788263

申请日：2015-06-30

Applicant: Michael B. Mathews ,  Peter F. MacDoran

Inventor： Michael B. Mathews ,  Peter F. MacDoran

IPC: H04B1/709 ,  G01S5/02 ,  G01S19/11 ,  G01S19/25 ,  G01S19/23

CPC classification number: H04B1/709 ,  G01S5/021 ,  G01S19/11 ,  G01S19/23 ,  G01S19/256

Abstract: The present invention relates to a system and method for positioning and navigation using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Examples of these signals of opportunity include but are not limited to GPS, GLONASS, cellular Code Division Multiple Access (CDMA) communications signals, and 802.11 Wi-Fi. Combining spectral compression with spread spectrum cross correlation enables extraction of code and carrier observables without the need to implement the tracking loops (e.g. Costas tracking loop) commonly used in conventional GNSS receivers. For applications where dynamics and transmission medium may make it difficult to continuously track carrier phase, the hybrid approach of the present invention has significant utility.

公开(公告)号：US09453917B2

公开(公告)日：2016-09-27

申请号：US14260045

申请日：2014-04-23

Applicant: Spectracom Corporation

Inventor： John Fischer ,  Paul E. Myers

IPC: G01S19/44 ,  G01S19/23 ,  G01S19/14 ,  G01S19/39 ,  G01S5/02

CPC classification number: G01S19/23 ,  G01S5/021 ,  G01S19/14 ,  G01S19/235 ,  G01S19/39

Abstract: A method, non-transitory computer readable medium and timing computing device for subnanosecond time synchronization. A difference between synchronized measurements of one of a plurality of satellite signals from a reference receiver and another receiver for each of N values within a cycle is determined. A clock bias error is calculated for each of the N values. The calculated clock bias errors are stored in a vector over time for each of the N values, with one of the vectors for each of the N values. A trajectory of the vectors over time is determined. The one of the vectors with a best convergence over time is selected. A timing signal is adjusted based on the N value for the selected one of the vectors with the best convergence over time.

Abstract translation: 一种用于亚纳秒时间同步的方法，非暂时性计算机可读介质和计时计算装置。 确定一个周期内的N个值中的每一个的来自参考接收机的多个卫星信号中的一个卫星信号与另一个接收机之间的同步测量值之间的差异。 计算N个值中的每一个的时钟偏差误差。 计算出的时钟偏差误差被存储在N个值中的每一个的时间上的向量中，其中N个值中的每一个的向量之一。 确定矢量随时间的轨迹。 选择具有最佳收敛时间的向量中的一个。 基于时间上具有最佳收敛性的所选择的一个矢量的N值来调整定时信号。

公开(公告)号：US09426613B2

公开(公告)日：2016-08-23

申请号：US14558320

申请日：2014-12-02

Applicant: Skyhook Wireless, Inc.

Inventor： Farshid Alizadeh-Shabdiz ,  Edward J. Morgan

IPC: H04W64/00 ,  H04W4/02 ,  G01S5/02 ,  G01S19/48 ,  H04W24/02 ,  G01S11/02 ,  H04W84/12

CPC classification number: H04W4/02 ,  G01S5/02 ,  G01S5/021 ,  G01S11/02 ,  G01S19/48 ,  H04W24/02 ,  H04W64/00 ,  H04W84/12 ,  H04W88/08

Abstract: In one embodiment, a technique is provided for estimating and using an expected error of a position estimate of a wireless local area network (WLAN)-enabled mobile device. The WLAN-enabled mobile device received signals transmitted by a plurality of WLAN access points that are in range. A position of the WLAN-enabled mobile device is estimated based on the signals from one or more of the plurality of WLAN access points. An expected error of the position estimate is estimated based on a combination of correlated parameters, such as a spatial spread of geographic positions of the one or more WLAN access points, the signal coverage areas of the one or more WLAN access points, and a number of the one or more WLAN access points. Based on the expected error, the position estimate may be weighted or excluded from use in deriving a position, speed, or direction of travel.

Abstract translation: 在一个实施例中，提供了一种用于估计和使用启用了无线局域网（WLAN）的移动设备的位置估计的期望误差的技术。 支持WLAN的移动设备接收由范围内的多个WLAN接入点发送的信号。 基于来自多个WLAN接入点中的一个或多个的信号来估计支持WLAN的移动设备的位置。 基于相关参数的组合来估计位置估计的预期误差，诸如一个或多个WLAN接入点的地理位置的空间扩展，一个或多个WLAN接入点的信号覆盖区域以及数字 的一个或多个WLAN接入点。 基于预期的误差，位置估计可以在导出位置，速度或行进方向时被加权或排除在使用之外。

公开(公告)号：US20160231412A1

公开(公告)日：2016-08-11

申请号：US15099228

申请日：2016-04-14

Applicant: Selex ES Ltd.

Inventor： Giuseppe Carlos SARNO ,  Ray LARSEN

IPC: G01S5/02 ,  G01S5/06

CPC classification number: G01S5/021 ,  G01S5/06

Abstract: A method for correcting for refraction effects of the earth's atmosphere in an emitter geolocation technique for locating an emitter of electromagnetic waves, by way of a plurality of receivers, includes detecting the times of arrival of electromagnetic waves at the receivers, computing the relative time differences of arrival between the various receivers and estimating therefrom the position of the emitter, and, for correcting, by way of an iterative procedure, the detected times of arrival for path length discrepancies caused by refraction in the earth's atmosphere. The receivers are each mounted on a respective airborne platform, and at least three pairs of the receivers are provided.

Abstract translation: 一种用于校正发射器地理位置技术中的地球大气的折射效应的方法，用于通过多个接收器定位电磁波的发射器，包括检测接收器处的电磁波的到达时间，计算相对时间差 在各种接收器之间的到达并从其估计发射器的位置，并且通过迭代过程来校正由于地球大气中的折射引起的路径长度差异的检测到的时间。 接收机各自安装在相应的机载平台上，并且提供至少三对接收器。

公开(公告)号：US09411038B2

公开(公告)日：2016-08-09

申请号：US13753967

申请日：2013-01-30

Applicant: Kabushiki Kaisha Toshiba

Inventor： Timothy David Farnham

IPC: G01S5/02

CPC classification number: G01S5/021 ,  G01S5/0252

Abstract: Determining a location estimate of a wireless communications device can depend on the dynamic and/or static state of the device. Compensation processing is applied to a location estimate (or to information from which such an estimate is derived, in use) if required, given the dynamic and/or static state of the device.

Abstract translation: 确定无线通信设备的位置估计可以取决于设备的动态和/或静态状态。 在给定设备的动态和/或静态的情况下，补偿处理被应用于位置估计（或者如果需要，导出使用中的这种估计的信息）。

公开(公告)号：US09408040B2

公开(公告)日：2016-08-02

申请号：US13767719

申请日：2013-02-14

Applicant: Matthew L. Cooper ,  Jacob Biehl

Inventor： Matthew L. Cooper ,  Jacob Biehl

IPC: H04W4/04 ,  G01S5/02 ,  H04W4/02 ,  G01S5/10

CPC classification number: H04W4/043 ,  G01S5/021 ,  G01S5/0252 ,  G01S5/0257 ,  G01S5/0278 ,  G01S5/0284 ,  G01S5/10 ,  H04W4/025 ,  H04W4/029

Abstract: A method of identifying a location of a mobile device in a building includes identifying non-overlapping regions in a building. A server collects base station signal strength measurements at a plurality of distinct points in the building, with at least one point in each region. The server trains region classifiers for each region. Each region classifier is configured to compute a probability estimate that the test point is inside the region, using inputs that are signal strength differences. The server receives signal strength measurements from the base stations, taken by a mobile device at an unknown point. The server computes differences in signal strengths between pairs of base stations, and applies the region classifiers to the signal strength differences, thereby estimating the region where the mobile device is located. The server then transmits the estimated region to a user.

Abstract translation: 识别建筑物中的移动设备的位置的方法包括识别建筑物中不重叠的区域。 服务器在建筑物中的多个不同点收集基站信号强度测量，每个区域中至少有一个点。 服务器为每个区域列出区域分类器。 每个区域分类器被配置为使用作为信号强度差的输入来计算测试点在区域内的概率估计。 服务器从基站接收信号强度测量，由移动设备在未知点拍摄。 服务器计算基站对之间信号强度的差异，并将区域分类器应用于信号强度差异，从而估计移动设备所在的区域。 然后，服务器将估计的区域发送给用户。