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Title: Object detection with a multistatic array using singular value decomposition

Abstract

A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across a surface and that travels down the surface. The detection system converts the return signals from a time domain to a frequency domain, resulting in frequency return signals. The detection system then performs a singular value decomposition for each frequency to identify singular values for each frequency. The detection system then detects the presence of a subsurface object based on a comparison of the identified singular values to expected singular values when no subsurface object is present.

Inventors:
;
Issue Date:
Research Org.:
LLNL (Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1136414
Patent Number(s):
8,766,845
Application Number:
13/313,939
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Hallquist, Aaron T., and Chambers, David H. Object detection with a multistatic array using singular value decomposition. United States: N. p., 2014. Web.
Hallquist, Aaron T., & Chambers, David H. Object detection with a multistatic array using singular value decomposition. United States.
Hallquist, Aaron T., and Chambers, David H. Tue . "Object detection with a multistatic array using singular value decomposition". United States. https://www.osti.gov/servlets/purl/1136414.
@article{osti_1136414,
title = {Object detection with a multistatic array using singular value decomposition},
author = {Hallquist, Aaron T. and Chambers, David H.},
abstractNote = {A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across a surface and that travels down the surface. The detection system converts the return signals from a time domain to a frequency domain, resulting in frequency return signals. The detection system then performs a singular value decomposition for each frequency to identify singular values for each frequency. The detection system then detects the presence of a subsurface object based on a comparison of the identified singular values to expected singular values when no subsurface object is present.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}

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Works referenced in this record:

Target characterization using decomposition of the time-reversal operator: electromagnetic scattering from small ellipsoids
journal, October 2006


Target Characterization Using Time-Reversal Symmetry Of Wave Propagation
journal, August 2007


Acoustic time-reversal mirrors
journal, January 2001


Time-reversed acoustics
journal, November 2000

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