Object detection with a multistatic array using singular value decomposition

Hallquist, Aaron T.; Chambers, David H.

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:: Hallquist, Aaron T.; Chambers, David H.

Issue Date:: 2014-07-01

Research Org.:: Lawrence Livermore National Lab. (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

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G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G01S13/885 - {for ground probing
G01S15/88 - Sonar systems specially adapted for specific applications
G01S15/003 - {Bistatic sonar systems
G01S13/003 - {Bistatic radar systems

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V3/12 - operating with electromagnetic waves {

G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G01S7/539 - using analysis of echo signal for target characterisation

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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.

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                    Hallquist, Aaron T., & Chambers, David H. Object detection with a multistatic array using singular value decomposition.  United States.

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                    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.

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@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

Chambers, D. H.; Berryman, J. G.
Inverse Problems, Vol. 22, Issue 6, p. 2145-2163
https://doi.org/10.1088/0266-5611/22/6/014

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

Chambers, D. H.
International Journal of Modern Physics B, Vol. 21, Issue 20, p. 3511-3555
https://doi.org/10.1142/S0217979207037521

Acoustic time-reversal mirrors
journal, January 2001

Fink, Mathias; Prada, Claire
Inverse Problems, Vol. 17, Issue 1, p. R1-R38
https://doi.org/10.1088/0266-5611/17/1/201

Time-reversed acoustics
journal, November 2000

Fink, Mathias; Cassereau, Didier; Derode, Arnaud
Reports on Progress in Physics, Vol. 63, Issue 12, p. 1933-1995
https://doi.org/10.1088/0034-4885/63/12/202

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

Abstract

Citation Formats

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

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