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Title: Ultra-wideband radios for time-of-flight-ranging and network position estimation

Abstract

This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.

Inventors:
 [1];  [2];  [3];  [3]
  1. Houston, TX
  2. Castro Valley, CA
  3. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1019092
Patent Number(s):
7962150
Application Number:
US Patent Application 11/637,388
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Hertzog, Claudia A, Dowla, Farid U, Dallum, Gregory E, and Romero, Carlos E. Ultra-wideband radios for time-of-flight-ranging and network position estimation. United States: N. p., 2011. Web.
Hertzog, Claudia A, Dowla, Farid U, Dallum, Gregory E, & Romero, Carlos E. Ultra-wideband radios for time-of-flight-ranging and network position estimation. United States.
Hertzog, Claudia A, Dowla, Farid U, Dallum, Gregory E, and Romero, Carlos E. Tue . "Ultra-wideband radios for time-of-flight-ranging and network position estimation". United States. https://www.osti.gov/servlets/purl/1019092.
@article{osti_1019092,
title = {Ultra-wideband radios for time-of-flight-ranging and network position estimation},
author = {Hertzog, Claudia A and Dowla, Farid U and Dallum, Gregory E and Romero, Carlos E},
abstractNote = {This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {6}
}

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