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。