Computer workstation tool for displaying performance estimate of tagged object geo-location system for proposed geometry layout of tag transmission readers
    11.
    发明授权
    Computer workstation tool for displaying performance estimate of tagged object geo-location system for proposed geometry layout of tag transmission readers 有权
    用于显示标签对象地理定位系统的性能估计的计算机工作站工具,用于提出标签传输读取器的几何布局

    公开(公告)号:US06366242B1

    公开(公告)日:2002-04-02

    申请号:US09626021

    申请日:2000-07-27

    IPC分类号: G01S302

    摘要: A reader geometry visualization tool for a geo-location system technician's personal computer is operative to display a map of an asset management environment. The technician interactively places and manipulates a distribution of tag transmission readers and any potential impairments to RF transmissions on the map. The locations of the readers (and any impairments) are coupled as input parameters to a mathematical model of a tag-based geo-location system. The performance of the map-parameterized geo-location system model is then computed as a geometric dilution of precision (gdop) value for the intended object coverage area. The computed (gdop) performance is visually characterized on the displayed map, as by way of different colors to indicate how accurately the proposed reader geometry will enable the system to locate objects anywhere in the coverage area.

    摘要翻译: 用于地理位置系统技术人员的个人计算机的读取器几何可视化工具可操作以显示资产管理环境的地图。 技术人员交互地放置和操纵标签传输读取器的分布以及对地图上的RF传输的任何潜在的损害。 读取器的位置(以及任何损伤)作为输入参数耦合到基于标签的地理定位系统的数学模型。 然后,计算地图参数化地理位置系统模型的性能,作为目标对象覆盖区域的精度(gdop)值的几何稀释度。 所计算的(gdop)性能在显示的地图上以视觉特征表示,作为不同的颜色,以指示所提出的读取器几何将如何准确地使得系统能够在覆盖区域的任何地方定位对象。

    METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR PROCESSING RECEIVED SIGNALS FOR LOCATING
    12.
    发明申请
    METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR PROCESSING RECEIVED SIGNALS FOR LOCATING 有权
    用于处理接收信号的方法,装置和计算机程序产品

    公开(公告)号:US20120225676A1

    公开(公告)日:2012-09-06

    申请号:US13411220

    申请日:2012-03-02

    IPC分类号: H04W24/00

    摘要: Example embodiments are directed to various aspects of processing received signals for determining a location of a source of the signals. An example method may include generating signal timing information, and determining times for a plurality of window periods for the signal of interest based on the signal timing information. The example method may also include retrieving, from a memory device that stores the signal stream, symbols of the signal of interest based on the window periods, and formatting the symbols of the signal of interest in preparation for determining a location of a source of the signal of interest. Additional and alternative methods and apparatuses are also provided.

    摘要翻译: 示例性实施例涉及处理用于确定信号源的位置的接收信号的各个方面。 示例性方法可以包括基于信号定时信息产生信号定时信息,以及确定感兴趣信号的多个窗口周期的时间。 示例性方法还可以包括从存储信号流的存储器件中检索基于窗口周期的感兴趣信号的符号,并且对所感兴趣的信号的符号进行格式化以准备确定信号源的位置 感兴趣的信号。 还提供了另外的替代方法和装置。

    System and method for tracking vehicles and containers
    13.
    发明授权
    System and method for tracking vehicles and containers 有权
    跟踪车辆和集装箱的系统和方法

    公开(公告)号:US07755541B2

    公开(公告)日:2010-07-13

    申请号:US12028894

    申请日:2008-02-11

    IPC分类号: G01S5/14 H04L12/58

    CPC分类号: G01S19/07 G01S19/09

    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。

    SYSTEM AND METHOD FOR TRACKING VEHICLES AND CONTAINERS
    14.
    发明申请
    SYSTEM AND METHOD FOR TRACKING VEHICLES AND CONTAINERS 有权
    用于跟踪车辆和集装箱的系统和方法

    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

    CPC分类号: G01S19/07 G01S19/09

    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。

    Method, apparatus, and computer program product for processing received signals for locating
    15.
    发明授权
    Method, apparatus, and computer program product for processing received signals for locating 有权
    用于处理用于定位的接收信号的方法,装置和计算机程序产品

    公开(公告)号:US09285454B2

    公开(公告)日:2016-03-15

    申请号:US13411220

    申请日:2012-03-02

    IPC分类号: H04W24/00 G01S5/02 G01S5/14

    摘要: Example embodiments are directed to various aspects of processing received signals for determining a location of a source of the signals. An example method may include generating signal timing information, and determining times for a plurality of window periods for the signal of interest based on the signal timing information. The example method may also include retrieving, from a memory device that stores the signal stream, symbols of the signal of interest based on the window periods, and formatting the symbols of the signal of interest in preparation for determining a location of a source of the signal of interest. Additional and alternative methods and apparatuses are also provided.

    摘要翻译: 示例性实施例涉及处理用于确定信号源的位置的接收信号的各个方面。 示例性方法可以包括基于信号定时信息产生信号定时信息,以及确定感兴趣信号的多个窗口周期的时间。 示例性方法还可以包括从存储信号流的存储器件中检索基于窗口周期的感兴趣信号的符号,并且对所感兴趣的信号的符号进行格式化以准备确定信号源的位置 感兴趣的信号。 还提供了另外的替代方法和装置。

    System and method for identifying objects using single connection line

    公开(公告)号:US06655582B2

    公开(公告)日:2003-12-02

    申请号:US10038532

    申请日:2002-01-02

    IPC分类号: G06K500

    CPC分类号: G06K17/00 G06K7/0008

    摘要: A system and method for identifying objects within a monitored environment includes a plurality of tag signal readers contained within the monitored environment and serially connected along a single connection line as a coaxial cable for receiving tag signals from at least one tag contained within the monitored environment. The tagged signals received by tag signal readers are timed and associated with a particular tag signal reader, such as by the use of multiplexing techniques. A location processor is connected to the single connection line and determines which tag signals are first-to-arrive signals and conduct differentiation of the first-to-arrive signals to locate a tag.

    Correlated ghost imager
    17.
    发明申请
    Correlated ghost imager 有权
    相关的鬼影片

    公开(公告)号:US20090072146A1

    公开(公告)日:2009-03-19

    申请号:US11901508

    申请日:2007-09-18

    IPC分类号: G01J5/02

    摘要: A method and system for detecting concealed weapons and explosives by imaging THz scenes using conventional optics and detectors is provided. Photon fields with two different wavelengths can be sent through a chopper and towards a wavelength-selective mirror. A light beam with a wavelength in the visible or IR range is sent toward a visible photon array detector. Similarly, light beams with wavelengths in the THz range can be sent towards a target, which are reflected and/or absorbed by objects in the target. The reflected or transmitted light continues on through an optional filter to remove background light, then into a non-imaging detector. The visible photon array detector can be coupled with the non-imaging detector, which will register an image of the scene that is illuminated by the THz photons.

    摘要翻译: 提供了一种通过使用常规光学和检测器对太赫兹场景进行成像检测隐藏的武器和爆炸物的方法和系统。 具有两种不同波长的光子场可以通过斩波器和波长选择性反射镜发射。 将具有可见光或IR范围波长的光束发送到可见光子阵列检测器。 类似地,具有THz范围波长的光束可以被发送到目标,由靶中的物体反射和/或吸收。 反射或透射的光继续通过可选的滤光器以去除背景光,然后进入非成像检测器。 可见光子阵列检测器可以与非成像检测器耦合,该非成像检测器将对由THz光子照射的场景的图像进行寄存。

    System for combining laser beam by transfer of energy therebetween in
atomic vapor
    18.
    发明授权
    System for combining laser beam by transfer of energy therebetween in atomic vapor 失效
    用于通过在原子蒸气中转移能量来组合激光束的系统

    公开(公告)号:US4918699A

    公开(公告)日:1990-04-17

    申请号:US358120

    申请日:1989-05-30

    IPC分类号: H01S3/30

    CPC分类号: H01S3/305

    摘要: Coherent transfer of laser energy between laser fields with high efficiency (85-95%) is obtained by energy coupling of nearly copropagating (intersecting) laser beams in mono-atomic vapor and provides an output beam of high power when nearly equal energy pulses are tuned near resonance with the transition of the atom of the vapor (e.g., potassium vapor at 230.degree.-260.degree. C.). The frequencies of the beams differ by approximately the inverse of the excited state lifetime of the atoms for optimum combining (coupling efficiency).

    摘要翻译: 通过在单原子蒸汽中几乎共同(相交)的激光束的能量耦合获得激光能量在高效率(85-95%)的激光场之间的相干传输,并且当几乎相等的能量脉冲被调谐时,提供高功率的输出光束 与蒸汽原子的过渡接近共振(例如,在230℃-260℃的钾蒸气)。 光束的频率几乎与原子的激发态寿命的倒数相差最佳组合(耦合效率)。

    Adaptive predistortion technique for linearizing a power amplifier for
digital data systems
    19.
    发明授权
    Adaptive predistortion technique for linearizing a power amplifier for digital data systems 失效
    用于线性化数字数据系统功率放大器的自适应预失真技术

    公开(公告)号:US4291277A

    公开(公告)日:1981-09-22

    申请号:US39362

    申请日:1979-05-16

    摘要: Distortion introduced into a multiamplitude signal format by a high power microwave amplifier is compensated by a system which adapts itself to non-linearities present in the amplifier and predistorts the input signals before they are subjected to the non-linearities created by the amplifier. The degree of predistortion is non-fixed and varies or is updated as the non-linear conversion characteristics of the amplifier change with time.

    摘要翻译: 通过高功率微波放大器引入多倍频信号格式的失真由一种适应于放大器中存在的非线性的系统补偿,并在输入信号经受由放大器产生的非线性之前预调制输入信号。 预失真程度是非固定的,随着放大器的非线性转换特性随时间而变化或更新。

    METHOD AND APPARATUS FOR MODELING TIMING RELATIONSHIPS BETWEEN CLOCKS
    20.
    发明申请
    METHOD AND APPARATUS FOR MODELING TIMING RELATIONSHIPS BETWEEN CLOCKS 有权
    用于建模时钟之间的时序关系的方法和装置

    公开(公告)号:US20130051262A1

    公开(公告)日:2013-02-28

    申请号:US13588710

    申请日:2012-08-17

    申请人: Robert W. Boyd

    发明人: Robert W. Boyd

    IPC分类号: H04W24/00

    摘要: Various methods for modeling timing relationships between clocks are provided. One example method includes identifying a link that is one of a plurality of links within a wireless locating system and receiving link data describing a reference signal event for the link. The example method may also include determining a reliability metric for the link based on the link data and comparing the reliability metric to a threshold reliability metric to determine whether the link is a reliable link. Further, the example method may include adding the link to a collection of reliable links for the wireless locating system, and generating a model describing a timing relationship between respective clocks of each of a plurality of receiver units in the wireless locating system based on link data for each of the reliable links. Related systems and apparatuses are also provided.

    摘要翻译: 提供了用于建模时钟之间时序关系的各种方法。 一个示例性方法包括识别作为无线定位系统中的多个链路之一的链路,以及接收描述链路的参考信号事件的链路数据。 示例性方法还可以包括基于链路数据确定链路的可靠性度量,并将可靠性度量与阈值可靠性度量进行比较,以确定链路是否是可靠链路。 此外,示例方法可以包括将链路添加到用于无线定位系统的可靠链路的集合,以及基于链路数据生成描述无线定位系统中的多个接收机单元中的每一个的各个时钟之间的定时关系的模型 为每个可靠的链接。 还提供了相关系统和装置。