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公开(公告)号：US09140772B1
公开(公告)日：2015-09-22
申请号：US13745700
申请日：2013-01-18
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。
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公开(公告)号：US09383436B2
公开(公告)日：2016-07-05
申请号：US14479236
申请日：2014-09-05
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。
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公开(公告)号：US20150029053A1
公开(公告)日：2015-01-29
申请号：US14479236
申请日：2014-09-05
IPC分类号： G01S13/00
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。
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