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    • 22. 发明授权
    • RFID tag having multiple transceivers
    • RFID标签具有多个收发器
    • US06726099B2
    • 2004-04-27
    • US10235564
    • 2002-09-05
    • Robert C. BeckerDavid W. MeyersSabera Kazi
    • Robert C. BeckerDavid W. MeyersSabera Kazi
    • G06K500
    • G06K19/0705G06K7/0008G06K19/0723
    • Information is communicated between an RFID tag and first and second readers. A first transceiver of the RFID tag is controlled so that the first transceiver communicates with the first reader and so that the first transceiver has substantially longer periods during which the first transceiver is not in communication with the first reader than when the first transceiver is in communication with the first reader. A second transceiver of the RFID tag is controlled so that the second transceiver communicates with the second reader at least during the periods when the first transceiver is not in communication with the first reader. The RFID tag may also have a battery, a switch coupling the battery to at least the first transceiver, and a controller that operates the switch in a duty cycle such that power is provided by the battery to the first transceiver during ON times of the duty cycle and such that power from the battery to the first transceiver is interrupted during OFF times of the duty cycle.
    • 在RFID标签与第一和第二读取器之间传送信息。 控制RFID标签的第一收发器,使得第一收发器与第一读取器通信,并且使得第一收发器具有比第一收发器处于通信时具有比第一收发器不与第一读取器通信的基本上更长的周期 与第一读者。 控制RFID标签的第二收发器,使得第二收发器至少在第一收发器不与第一读取器通信的时段期间与第二读取器通信。 RFID标签还可以具有电池,将电池耦合到至少第一收发器的开关以及以占空比操作开关的控制器,使得在开启ON时间期间电池向第一收发器提供电力 并且使得在占空比的OFF时间期间从电池到第一收发器的电力中断。
    • 24. 发明授权
    • Methods and systems for diminishing the effects of an acoustic signature of vehicles
    • 降低车辆声学特征影响的方法和系统
    • US08036821B2
    • 2011-10-11
    • US11958775
    • 2007-12-18
    • Alan G. CornettDavid W. MeyersRobert E. DeMers
    • Alan G. CornettDavid W. MeyersRobert E. DeMers
    • G01C21/00
    • G01C21/3492G01C21/3453G01C21/3484
    • Methods and systems are provided for diminishing the effects of an acoustic signature of a vehicle while the vehicle is en route to a destination. One method includes the steps of retrieving acoustic data representing an acoustic model of the vehicle, terrain data representing a terrain model of a geographic area surrounding the destination, route data representing a model of a plurality of routes to the destination, and weather data representing atmospheric conditions of the geographic area. The method also includes selecting a route to the destination based on the acoustic, terrain, route, and weather data. A system includes means for performing the retrieving step and the selecting step of the above method. Another system includes memory storing the acoustic, terrain, route, and weather data, and a processor coupled to the memory and configured to select a route to the destination based on the acoustic, terrain, route, and weather data.
    • 提供的方法和系统用于在车辆途中到达目的地时减小车辆的声学特征的影响。 一种方法包括以下步骤:检索表示车辆的声学模型的声学数据,表示目的地周围的地理区域的地形模型的地形数据,表示到目的地的多条路线的模型的路线数据,以及表示大气的天气数据 地理区域的条件。 该方法还包括基于声学,地形,路线和天气数据选择到目的地的路线。 系统包括用于执行上述方法的检索步骤和选择步骤的装置。 另一系统包括存储声学,地形,路线和天气数据的存储器,以及耦合到存储器并被配置为基于声学,地形,路线和天气数据选择到目的地的路线的处理器。
    • 25. 发明授权
    • Radar system for obstacle avoidance
    • 用于避障的雷达系统
    • US07868817B2
    • 2011-01-11
    • US12245334
    • 2008-10-03
    • David W. MeyersLong BuiYi-Chi Shih
    • David W. MeyersLong BuiYi-Chi Shih
    • G01S13/00G01S13/08
    • G01S13/4454G01S13/9303G01S13/931H01Q25/02
    • A radar system comprises a transmitter antenna configured to transmit a radio frequency (RF) signal, a first receiver antenna, and a second receiver antenna. Each of the first and second receiver antennas are configured to receive a reflection of the RF signal, wherein the first and second receiver antennas are synchronized and separated by a vertical distance. The radar system also comprises radar processing circuitry configured to control transmission of the RF signal from the transmitter antenna and to determine an elevation of an object reflecting the RF signal based on the phase difference between the reflected RF signal received by the first receiver antenna and the reflected RF signal received by the second receiver antenna; wherein the transmit antenna, first receiver antenna, and second receiver antenna are operable to continuously rotate 360 degrees along an azimuth angle without rotating along an elevation angle.
    • 雷达系统包括被配置为发送射频(RF)信号的发射机天线,第一接收机天线和第二接收机天线。 第一和第二接收机天线中的每一个被配置为接收RF信号的反射,其中第一和第二接收机天线被同步并且被垂直距离分开。 雷达系统还包括雷达处理电路,该雷达处理电路被配置为控制来自发射机天线的RF信号的传输,并且基于由第一接收机天线接收的反射的RF信号与第一接收机天线之间的相位差来确定反射RF信号的物体的高度 由第二接收机天线接收的反射RF信号; 其中所述发射天线,第一接收机天线和第二接收机天线可操作以沿着方位角连续地旋转360度而不沿着仰角旋转。
    • 26. 发明授权
    • Distributed stand-off verification and face recognition systems (FRS)
    • 分布式对等验证和面部识别系统(FRS)
    • US07843313B2
    • 2010-11-30
    • US11290523
    • 2005-12-01
    • Michael E. BazakosDavid W. Meyers
    • Michael E. BazakosDavid W. Meyers
    • B60R25/00
    • G06K9/00255G07B15/06G07C9/00087G08G1/017G08G1/207
    • A system for providing stand-off biometric verification of a driver of a vehicle while the vehicle is moving and/or a person on foot at a control gate, including an RFID vehicle tag reader, an RFID personal smart card reader and a facial detection and recognition (verification) system. The driver carries a RFID personal smart card that stores personal information of the driver and a face template of the driver. The vehicle carries a RFID vehicle tag that stores information regarding the vehicle. When the vehicle approaches the control gate, the RFID vehicle tag reader reads data from the RFID vehicle tag and the RFID personal tag reader reads data from the RFID personal smart card. The facial detection and verification system scans and reads a facial image for the driver. All the data and facial images detected by the readers are sent to a local computer at the control gate for further processing (final face verification). The local computer at the control gate decodes and retrieves the face template from the data read from the RFID personal smart card.
    • 一种用于在车辆移动时提供车辆驾驶员的离线生物特征验证和/或在控制门上的人的行动的系统,包括RFID车辆标签读取器,RFID个人智能卡读取器和面部检测, 识别(验证)系统。 驾驶员携带RFID个人智能卡,其存储驾驶员的个人信息和驾驶员的面部模板。 车辆载有存储关于车辆的信息的RFID车辆标签。 当车辆接近控制门时,RFID车辆标签读取器从RFID车辆标签读取数据,并且RFID个人标签读取器从RFID个人智能卡读取数据。 面部检测和验证系统扫描并读取驾驶员的面部图像。 读取器检测到的所有数据和面部图像都将发送到控制门上的本地计算机进行进一步处理(最终面部验证)。 控制门上的本地计算机从RFID个人智能卡读取的数据解码并检索面部模板。
    • 29. 发明申请
    • METHODS AND SYSTEMS FOR DIMINISHING THE EFFECTS OF AN ACOUSTIC SIGNATURE OF VEHICLES
    • 用于定义车辆声学签名效果的方法和系统
    • US20090157293A1
    • 2009-06-18
    • US11958775
    • 2007-12-18
    • Alan G. CornettDavid W. MeyersRobert E. DeMers
    • Alan G. CornettDavid W. MeyersRobert E. DeMers
    • G01C21/34
    • G01C21/3492G01C21/3453G01C21/3484
    • Methods and systems are provided for diminishing the effects of an acoustic signature of a vehicle while the vehicle is en route to a destination. One method includes the steps of retrieving acoustic data representing an acoustic model of the vehicle, terrain data representing a terrain model of a geographic area surrounding the destination, route data representing a model of a plurality of routes to the destination, and weather data representing atmospheric conditions of the geographic area. The method also includes selecting a route to the destination based on the acoustic, terrain, route, and weather data. A system includes means for performing the retrieving step and the selecting step of the above method. Another system includes memory storing the acoustic, terrain, route, and weather data, and a processor coupled to the memory and configured to select a route to the destination based on the acoustic, terrain, route, and weather data.
    • 提供的方法和系统用于在车辆途中到达目的地时减小车辆的声学特征的影响。 一种方法包括以下步骤:检索表示车辆的声学模型的声学数据,表示目的地周围的地理区域的地形模型的地形数据,表示到目的地的多条路线的模型的路线数据,以及表示大气的天气数据 地理区域的条件。 该方法还包括基于声学,地形,路线和天气数据选择到目的地的路线。 系统包括用于执行上述方法的检索步骤和选择步骤的装置。 另一系统包括存储声学,地形,路线和天气数据的存储器,以及耦合到存储器并被配置为基于声学,地形,路线和天气数据选择到目的地的路线的处理器。
    • 30. 发明申请
    • SYSTEM AND METHOD FOR ENHANCING THE PERFORMANCE OF SATELLITE NAVIGATION RECEIVERS
    • 提高卫星导航接收机性能的系统和方法
    • US20070279279A1
    • 2007-12-06
    • US11422523
    • 2006-06-06
    • David W. MeyersBrian W. SchipperLawrence C. Vallot
    • David W. MeyersBrian W. SchipperLawrence C. Vallot
    • G01S1/00H04B7/185
    • G01S19/23G01S19/20
    • A system and method for enhancing the performance of satellite navigation receivers are disclosed, which incorporate a precise frequency reference in a satellite navigation receiver that reduces the system's dependence on maintaining continuous satellite reception for RAIM availability. As one example, a system for enhancing the performance of a satellite navigation receiver is disclosed, which includes a GPS receiver and a high precision (e.g., atomic) clock incorporated into the GPS receiver. The use of the high precision clock reduces clock error and the number of satellite measurements needed to meet existing RAIM availability requirements. For example, incorporating a precision clock into a GPS receiver provides an enhanced system that meets existing RAIM availability requirements with at least one less satellite measurement than the number needed for prior systems using RAIM.
    • 公开了一种用于增强卫星导航接收机性能的系统和方法,其在卫星导航接收机中包含精确的频率参考,其降低了系统对维持RAIM可用性的连续卫星接收的依赖性。 作为一个示例,公开了一种用于增强卫星导航接收机的性能的系统,其包括GPS接收机和并入GPS接收机的高精度(例如,原子)时钟。 使用高精度时钟可以减少时钟误差和满足现有RAIM可用性要求所需的卫星测量次数。 例如,将精密时钟并入GPS接收机中,提供了一种增强型系统,该系统能够利用至少比使用RAIM的现有系统所需的数量少一个卫星测量来满足现有的RAIM可用性要求。