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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.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1136414
Patent Number(s):
8766845
Application Number:
13/313,939
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
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 = {Tue Jul 01 00:00:00 EDT 2014},
month = {Tue Jul 01 00:00:00 EDT 2014}
}

Works referenced in this record:

Radar signal pre-processing to suppress surface bounce and multipath
patent, December 2013


Real-Time System for Imaging and Object Detection with a Multistatic GPR Array
patent-application, April 2013


Classification of Subsurface Objects Using Singular Values Derived from Signal Frames
patent-application, April 2013


Buried Object Detection in GPR Images
patent-application, April 2013


Object Detection with a Multistatic Array Using Singular Value Decomposition
patent-application, May 2013


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


    Works referencing / citing this record:

    Detecting an underground object
    patent, February 2017


    Detecting an underground object
    patent, October 2015