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公开(公告)号：US07212563B2
公开(公告)日：2007-05-01
申请号：US10138795
申请日：2002-05-03
IPC分类号： H04B1/00
CPC分类号： G01S5/0221 , G01S5/02 , G01S5/0226 , H04B1/7075 , H04B2201/70715
摘要： A location system includes a plurality of signal readers for receiving signals from a wireless transmitter to be located. The signals include a wideband, spread spectrum signal and a timing marker appended a predetermined time in front of the wideband, spread spectrum signal for indicating the presence of the wideband, spread spectrum signal. A location processor is operatively coupled to the signal readers for detecting the timing markers of signals and responsive to a detection of a timing marker, correlating a signal as a first-to-arrive signal and conducting differentiation of first-to-arrive signals to locate a wireless transmitter.
摘要翻译： 位置系统包括用于从要定位的无线发射机接收信号的多个信号读取器。 信号包括宽带扩频信号和附加在用于指示宽带扩频信号的存在的宽带扩频信号前面的预定时间的定时标记。 位置处理器可操作地耦合到信号读取器，用于检测信号的定时标记并且响应于定时标记的检测，将信号作为第一到到信号进行相关，并且对第一到到达信号进行区分以定位 无线发射机。
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公开(公告)号：US07755541B2
公开(公告)日：2010-07-13
申请号：US12028894
申请日：2008-02-11
摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.
摘要翻译： 用于跟踪终端内的资产的定位系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。
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公开(公告)号：US20080191937A1
公开(公告)日：2008-08-14
申请号：US12028894
申请日：2008-02-11
IPC分类号： G01S5/14
摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.
摘要翻译： 用于跟踪终端内的资产的位置系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。
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公开(公告)号：US5995046A
公开(公告)日：1999-11-30
申请号：US239399
申请日：1999-01-28
IPC分类号： G01S1/04 , G01S5/02 , G01S5/04 , G01S5/06 , G01S13/76 , G01S13/82 , G01S13/87 , G01S19/11 , G06K7/00 , G06K17/00 , G01S3/02
CPC分类号： G01S5/06 , G01S1/042 , G01S13/767 , G01S13/82 , G01S13/878 , G01S5/02 , G01S5/021 , G01S5/04 , G06K7/0008 , G06K7/10079 , G01S13/825 , G06K2017/0045
摘要： An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration pulse `blinks` from object-attached tags, to provide a practical, continuous identification of the location of each and every object within an environment of interest, irrespective whether the object is stationary or moving. Correlation-based RF processors determine which signals received spatially diverse antennas coupled to tag transmission readers are first-to-arrive signals as transmitted from any blinking tag. An object location processor carries out time-of-arrival differentiation of first-to-arrive transmissions from any blinking tag to determine where the respective object is located within the environment.
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公开(公告)号：US06380894B1
公开(公告)日：2002-04-30
申请号：US09649646
申请日：2000-08-29
IPC分类号： G01S302
CPC分类号： G06K7/10079 , G01S5/02 , G01S5/021 , G01S5/06 , G01S13/767 , G01S13/82 , G01S13/825 , G01S13/878 , G06K7/0008 , G06K7/10356 , G06K2017/0045
摘要： An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration transmissions from object-attached tags, to geolocate objects within a monitored environment. An object location processor is coupled to distributed tag transmission readers over signal transport paths having different transport delays, and carries out time-of-arrival differentiation of first-to-arrive transmissions from a tag to determine where its object is located. Geolocation errors associated with variations in parameters of the signal transport paths are effectively removed by installing one or more ‘reference’ tags, whose geolocations are precisely known. Using a background calibration routine that is exercised at a relatively low cycle rate, emissions from the reference tags are processed and coupled to the geolocation processor. The calculated geolocations of the reference tags are compared with their actual locations. Any offset between the two geolocation values is used to adjust time delay offsets associated with signal transport paths between the readers and the geolocation processor.
摘要翻译： 资产管理无线电定位系统使用随机和重复扩频的到达时间差异，从对象附加标签的短时间传输到被监视环境内的地理定位对象。 对象位置处理器通过具有不同传输延迟的信号传输路径耦合到分布式标签传输读取器，并且执行来自标签的首次到达传输的到达时间差异，以确定其对象位于何处。 通过安装一个或多个“参考”标签，其地理位置是精确已知的，可有效地消除与信号传输路径参数变化相关联的地理位置错误。使用以相对低的周期速率运行的背景校准程序， 标记被处理并耦合到地理位置处理器，将参考标签的计算的地理位置与其实际位置进行比较。两个地理位置值之间的任何偏移用于调整与读取器和地理位置处理器之间的信号传输路径相关联的时间延迟偏移 。
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6.发明授权
公开(公告)号：US6127976A
公开(公告)日：2000-10-03
申请号：US390030
申请日：1999-09-02
申请人： Robert W. Boyd , David J. Stryker , Ronald J. Hash , Donald K. Belcher , Michael A. Wohl , Timothy C. Harrington
发明人： Robert W. Boyd , David J. Stryker , Ronald J. Hash , Donald K. Belcher , Michael A. Wohl , Timothy C. Harrington
CPC分类号： G06K17/00 , G01S5/0081 , G01S5/06 , G06K2017/0045
摘要： A distributed radio geo-location and tracking system has a distributed subsystem architecture that distributes its processing workload over a plurality of information handling and processing subsystems. For maximum detection capability, each of a plurality of tag emission receivers is equipped with a circularly polarized, omnidirectional antenna, to provide hemispherical coverage. The receivers are coupled to a partitioned plurality of detection processors, that are coupled via distributed association processors to multiple location processors. Each detection processor demodulates and time stamps received energy correlated to known spreading codes of the tags, to associate received energy with only one tag. It transmits a message containing this information over a communication framework to an association processor. The computational load is equitably distributed by a flow control mechanism among available association processors, with all receptions of a single tag transmission being directed to the same association processor. An association processor organizes received messages by tag and time-of-arrival (TOA), and transmits association reports over an association communication process of the communication framework to one of plural distributed location processors. A location processor determines the geographical locations of tags using the TOA information in the association reports.
摘要翻译： 分布式无线电地理位置和跟踪系统具有分布式子系统架构，其通过多个信息处理和处理子系统分配其处理工作负载。 为了获得最大的检测能力，多个标签发射接收器中的每一个配备有圆极化的全向天线，以提供半球形覆盖。 接收器耦合到分隔的多个检测处理器，其经由分布式关联处理器耦合到多个位置处理器。 每个检测处理器解调和接收与标签的已知扩展码相关的接收能量的时间戳，以将接收到的能量与仅一个标签相关联。 它通过通信框架将包含该信息的消息发送到关联处理器。 计算负载由可用的关联处理器之间的流控制机制公平分配，单个标签传输的所有接收都被引导到相同的关联处理器。 关联处理器通过标签和到达时间（TOA）来组织接收到的消息，并且通过通信框架的关联通信过程将关联报告发送到多个分布式位置处理器之一。 位置处理器使用关联报告中的TOA信息确定标签的地理位置。
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7.发明授权公开(公告)号：US06892054B2
公开(公告)日：2005-05-10
申请号：US10033529
申请日：2001-12-28
CPC分类号： G01S5/0215 , H04B7/086 , H04W64/00 , H04W84/12 , H04W88/08
摘要： A wireless local area network and location system for locating objects within a monitored environment are disclosed. A plurality of access point stations receive and transmit communication signals within a wireless local area network. A processor is operatively connected to each of the access point stations and operative for processing communication signals received from the mobile station and, in one embodiment, determining which communication signals are first-to-arrive signals and conducting differentiation of the first-to-arrive signals to locate a mobile station. Delayed versions of at least one interference signal are weighted and the amplitude and phase controlled with weighted functions W1, W2 . . . Wn. The resultant weighted replicas are summed to determine an approximation of disbursed interference for cancelling interference. The location system can include a tag transmitter and spaced monitoring receivers and processor.
摘要翻译： 公开了一种用于在受监视的环境内定位对象的无线局域网和定位系统。 多个接入点站在无线局域网内接收和发送通信信号。 处理器可操作地连接到每个接入点站并且用于处理从移动站接收的通信信号，并且在一个实施例中，确定哪些通信信号是首先到达信号并且进行第一到达的区分 信号来定位移动台。 加权至少一个干扰信号的延迟版本，并且用加权函数W 1，W 2 2控制振幅和相位。 。 。 W 。 将所得到的加权副本相加以确定用于消除干扰的已发送干扰的近似值。 位置系统可以包括标签发射器和间隔的监视接收器和处理器。
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8.发明授权Radio geo-location system with advanced first received wavefront arrival determination 有权无线电地理定位系统具有先进的首次接收波前到达判定
公开(公告)号：US6121926A
公开(公告)日：2000-09-19
申请号：US442710
申请日：1999-11-19
IPC分类号： G01S1/04 , G01S5/02 , G01S5/04 , G01S5/06 , G01S13/76 , G01S13/82 , G01S13/87 , G01S19/11 , G06K7/00 , G06K17/00 , G01S3/02
CPC分类号： G01S5/06 , G01S1/042 , G01S13/767 , G01S13/82 , G01S13/878 , G01S5/02 , G01S5/021 , G01S5/04 , G06K7/0008 , G06K7/10079 , G01S13/825 , G06K2017/0045
摘要： An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration pulse `blinks` from object-attached tags, to provide a practical, continuous identification of the location of each and every object within an environment of interest, irrespective whether the object is stationary or moving. Correlation-based RF processors determine which signals received spatially diverse antennas coupled to tag transmission readers are first-to-arrive signals as transmitted from any blinking tag. An object location processor carries out time-of-arrival differentiation of first-to-arrive transmissions from any blinking tag to determine where the respective object is located within the environment.
摘要翻译： 资产管理无线电定位系统使用随机和重复扩频的到达时间差异化，来自对象附加标签的短持续时间脉冲“闪烁”，以提供对环境中每个对象的位置的实际连续识别 感兴趣的，无论物体是静止的还是移动的。 基于相关性的RF处理器确定接收到与标签传输读取器相耦合的空间多样的天线的哪些信号是从任何闪烁标签发送的首先到达信号。 对象位置处理器执行从任何闪烁标签到达的到达传输的到达时间差异，以确定相应对象在环境内的位置。
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9.发明申请Method, Apparatus, and Computer Program Product for Wireless Signal Storage With Signal Recognition Detection Triggering 有权用于信号识别检测触发的无线信号存储的方法，装置和计算机程序产品公开(公告)号：US20110211453A1
公开(公告)日：2011-09-01
申请号：US12874960
申请日：2010-09-02
IPC分类号： H04W24/00
CPC分类号： G01S5/02 , G01S5/0009
摘要： Various methods for wireless signal storage with signal recognition detection triggering are provided. One method may include receiving a plurality of wireless signals via a plurality of frequency channels, storing representations of the plurality of wireless signals in a signal buffer, and receiving a trigger request for a signal of interest. In this regard, the trigger request may have been generated based on an analysis of at least one wireless signal within the plurality of wireless signals to thereby identify the signal of interest. The method may also include retrieving a representation of the signal of interest from the signal buffer based on the trigger request, and analyzing the retrieved representation of the signal of interest with associated signal characteristics to determine a location of a source of the signal of interest. Similar apparatuses and computer program products are also provided.
摘要翻译： 提供了具有信号识别检测触发的无线信号存储的各种方法。 一种方法可以包括经由多个频率信道接收多个无线信号，将多个无线信号的表示存储在信号缓冲器中，以及接收对感兴趣的信号的触发请求。 在这方面，可以基于对多个无线信号中的至少一个无线信号的分析来生成触发请求，从而识别感兴趣的信号。 该方法还可以包括基于触发请求从信号缓冲器中检索感兴趣的信号的表示，以及用相关联的信号特征来分析检索到的感兴趣的信号的表示以确定感兴趣信号的源的位置。 还提供了类似的装置和计算机程序产品。
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公开(公告)号：US09880283B2
公开(公告)日：2018-01-30
申请号：US12169742
申请日：2008-07-09
摘要： A system is provided for tracking an asset within a geographic area. The system includes an antenna mast supportable by, and extending upward from, an object configured to move or facilitate movement of the asset. The antenna mast is capable of supporting a plurality of wireless locating units of a plurality of geo-spatial positioning systems, which are configured to locate a respective one or more locating units, and thereby the asset, within the geographic area. The system also includes a controller positionable on the object and configured to control operation of the wireless locating units. The controller is further configured to direct transmission of data to a host via one of the locating units or another wireless transmitter, and in a manner that accounts for a wireless link between the respective locating unit or other wireless transmitter and the host.
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