利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.019 秒)

    Distance measuring quality factor using signal characterization
    1.
    发明授权
    Distance measuring quality factor using signal characterization 有权
    使用信号表征的距离测量品质因子

    公开(公告)号：US09140772B1

    公开(公告)日：2015-09-22

    申请号：US13745700

    申请日：2013-01-18

    申请人： TDC Acquisition Holdings, Inc

    发明人： Brandon Scott Dewberry ,  William Clyde Beeler

    IPC分类号： G01S13/08 ,  G01S3/04 ,  H04B1/7183 ,  G01S13/76 ,  G01S13/02

    CPC分类号： G01S3/04 ,  G01S5/0221 ,  G01S7/40 ,  G01S11/06 ,  G01S13/0209 ,  G01S13/76 ,  G01S13/765 ,  H04B1/7183

    摘要： A system and method for providing a range (distance) measurement by measuring electromagnetic signal time of flight. The system provides an estimate of the quality of the range measurement by evaluation of the multipath environment based on signal characterization. In one embodiment, a received ultra wideband signal is evaluated by a scanning receiver to produce a channel scan waveform inclusive of the transmitted signal and multipath response. The channel scan waveform is evaluated for envelope rise rate, amplitude, leading edge direct path pulse time, saturation, blockage, and signal history characterization. Signal characteristics are used to determine a signal classification. Signals are then evaluated for quality based on the signal classification. In one embodiment, the signal quality is used to estimate a variance of the range estimate for use in navigation algorithms.

    摘要翻译： 一种通过测量电磁信号飞行时间来提供距离（距离）测量的系统和方法。 该系统通过基于信号表征的多路径环境的评估来提供范围测量的质量的估计。 在一个实施例中，接收到的超宽带信号由扫描接收机评估，以产生包括发射信号和多径响应的信道扫描波形。 评估信道扫描波形的包络上升速率，幅度，前沿直接路径脉冲时间，饱和度，阻塞和信号历史表征。 信号特性用于确定信号分类。 然后根据信号分类对信号进行质量评估。 在一个实施例中，信号质量用于估计用于导航算法的范围估计的方差。

    Enhanced system and method for detecting the leading edge of a waveform
    2.
    发明授权
    Enhanced system and method for detecting the leading edge of a waveform 有权
    用于检测波形前沿的增强系统和方法

    公开(公告)号：US08111797B2

    公开(公告)日：2012-02-07

    申请号：US12149785

    申请日：2008-05-08

    申请人： Mark A. Barnes ,  Irina Dodoukh

    发明人： Mark A. Barnes ,  Irina Dodoukh

    IPC分类号： H04L25/38

    CPC分类号： H04B1/7183

    摘要： The present invention is an improved system and method for detecting the leading edge of a waveform. More specifically, the invention relates to detecting the leading edge of an ultra wideband waveform. The invention requires locking to the ultra wideband waveform at a lock reference time, and sampling the ultra wideband waveform during one or more time windows relative to the lock reference time to identify one or more leading edge candidate times based on one or more detection criterion. The ultra wideband signal is sampled at a band limited Nyquist rate that avoids aliasing within a band of interest of the ultra wideband waveform, but allows aliasing outside of the band of interest to minimize the number of samples for leading edge detection processing.

    摘要翻译： 本发明是用于检测波形的前沿的改进的系统和方法。 更具体地，本发明涉及检测超宽带波形的前沿。 本发明要求在锁定参考时间锁定超宽带波形，并且在相对于锁定参考时间的一个或多个时间窗口期间对超宽带波形进行采样，以基于一个或多个检测标准来识别一个或多个前沿候选时间。 超宽带信号以带宽限制奈奎斯特速率进行采样，避免了超宽带波形的感兴趣频带内的混叠，但允许将感兴趣的频带外的混叠最小化用于前沿检测处理的样本数。

    Ultrawide-band communication system and method
    3.
    发明授权
    Ultrawide-band communication system and method 有权
    超宽带通信系统和方法

    公开(公告)号：US07983320B2

    公开(公告)日：2011-07-19

    申请号：US10784747

    申请日：2004-02-24

    申请人： Larry W. Fullerton ,  Ivan A. Cowie

    发明人： Larry W. Fullerton ,  Ivan A. Cowie

    IPC分类号： H04B1/69

    CPC分类号： H04B1/71637 ,  H04B1/69 ,  H04B1/707 ,  H04B1/70753 ,  H04B1/708 ,  H04B1/71632 ,  H04B1/71635 ,  H04B1/7176 ,  H04B1/7183 ,  H04B14/026 ,  H04B2001/6908 ,  H04B2201/70707 ,  H04L27/2601 ,  H04L27/2602

    摘要： An impulse radio communications system using one or more subcarriers to communicate information from an impulse radio transmitter to an impulse radio receiver. The impulse radio communication system is an ultrawide-band time domain system. The use of subcarriers provides impulse radio transmissions added channelization, smoothing and fidelity. Subcarriers of different frequencies or waveforms can be used to add channelization of impulse radio signals. Thus, an impulse radio link can communicate many independent channels simultaneously by employing different subcarriers for each channel. The impulse radio uses modulated subcarrier(s) for time positioning a periodic timing signal or a coded timing signal. Alternatively, the coded timing signal can be summed or mixed with the modulated subcarrier(s) and the resultant signal is used to time modulate the periodic timing signal. Direct digital modulation of data is another form of subcarrier modulation for impulse radio signals. Direct digital modulation can be used alone to time modulate the periodic timing signal or the direct digitally modulated the periodic timing signal can be further modulated with one or more modulated subcarrier signals. Linearization of a time modulator permits the impulse radio transmitter and receiver to generate time delays having the necessary accuracy for impulse radio communications.

    摘要翻译： 一种使用一个或多个子载波将脉冲无线电发射机的信息传送到脉冲无线电接收机的脉冲无线电通信系统。 脉冲无线电通信系统是一个超宽带时域系统。 使用副载波提供脉冲无线电传输，增加信道化，平滑和保真度。 可以使用不同频率或波形的子载波来增加脉冲无线电信号的信道化。 因此，脉冲无线电链路可以通过为每个信道采用不同的子载波来同时传送许多独立信道。 脉冲无线电使用调制子载波来定时周期性定时信号或编码定时信号。 或者，编码的定时信号可以与调制的子载波相加或混合，并且所得到的信号用于时间调制周期性定时信号。 数据的直接数字调制是脉冲无线电信号的另一种形式的子载波调制。 可以单独使用直接数字调制来对周期性定时信号进行时间调制，或者直接数字调制，可以用一个或多个调制子载波信号进一步调制周期性定时信号。 时间调制器的线性化允许脉冲无线电发射机和接收机产生具有脉冲无线电通信必要精度的时间延迟。

    One way time of flight distance measurement
    4.
    发明授权
    One way time of flight distance measurement 有权
    一次飞行距离测量

    公开(公告)号：US09383436B2

    公开(公告)日：2016-07-05

    申请号：US14479236

    申请日：2014-09-05

    申请人： TDC Acquisition Holdings, Inc.

    发明人： Brandon Scott Dewberry ,  Gert Frølund Pedersen ,  Patrick Claus Friedrich Eggers

    IPC分类号： G01S13/08 ,  G01S11/02 ,  G01S11/08

    CPC分类号： G01S11/02 ,  G01S11/08

    摘要： Determination of distance and/or position relative to one or more points by transmission of a wideband signal by a first antenna, reception of the transmitted wideband signal by a second antenna and comparison of the time delay between the transmitted and received signals. The first and second antennas are connected to a timer/processor unit. One or more of the first or second antennas is movable to an unknown position to be measured, but maintains connection to the timer/processor through a fixed or known delay communication link. The timer/processor contains a time base for generating the transmitted signal and an offset timer for measuring the time delay of the received signal. The received signal may be processed to determine a start time or leading edge that may resolve RF cycle and modulation bandwidth ambiguities and may allow positive determination of distance much shorter than a wavelength at the operation center frequency.

    摘要翻译： 通过第一天线的宽带信号的发送，通过第二天线的发送的宽带信号的接收和发送和接收的信号之间的时间延迟的比较来确定相对于一个或多个点的距离和/或位置。 第一和第二天线连接到定时器/处理器单元。 第一或第二天线中的一个或多个可移动到待测量的未知位置，但通过固定或已知的延迟通信链路保持与定时器/处理器的连接。 定时器/处理器包含用于产生发送信号的时基和用于测量接收信号的时间延迟的偏移定时器。 可以处理接收的信号以确定可以解决RF周期和调制带宽模糊度的开始时间或前沿，并且可以允许比操作中心频率处的波长短得多的距离的肯定确定。

    System and method for radiating RF waveforms using discontinues associated with a utility transmission line
    5.
    发明授权
    System and method for radiating RF waveforms using discontinues associated with a utility transmission line 有权
    用于使用与公用事业传输线相关联的中断来辐射RF波形的系统和方法

    公开(公告)号：US08164509B1

    公开(公告)日：2012-04-24

    申请号：US11889519

    申请日：2007-08-14

    申请人： Larry W. Fullerton ,  Mark D. Roberts

    发明人： Larry W. Fullerton ,  Mark D. Roberts

    IPC分类号： G01S13/00 ,  G08B13/00 ,  G08B13/18

    CPC分类号： G01S13/888 ,  G01S7/414 ,  G01S13/003 ,  G01S13/04 ,  G08B13/1636 ,  G08B21/22

    摘要： A method for processing radio frequency reflections is provided. The method applies an RF waveform to a transmission line that is a conductor used for providing a utility service. The method uses a RF waveform generator to transmit UltraWideband (UWB) RF waveforms through the conductors of a building. The RF waveforms are emitted at emission points that can be impedance discontinuities along the transmission line or impulse radios. The emitted RF waveforms reflect off of objects in the building and are received at reception points that can be impedance discontinuities or impulse radios. These reflections are processed to determine movement of objects within or near the building. Based on the reflections of the RF waveforms, the position of the objects within or near the building can be determined.

    摘要翻译： 提供了一种处理射频反射的方法。 该方法将RF波形应用于作为用于提供公共事业服务的导体的传输线。 该方法使用RF波形发生器通过建筑物的导体传输超宽带（UWB）RF波形。 射频波形在发射点发射，这些发射点可以是沿着传输线或脉冲无线电的阻抗不连续。 发射的RF波形反映在建筑物内的物体，并在接收点处被接收，可以是阻抗不连续或脉冲无线电。 处理这些反射以确定物体在建筑物内或附近的运动。 基于RF波形的反射，可以确定建筑物内或附近物体的位置。