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Title: Radar signal pre-processing to suppress surface bounce and multipath

Abstract

A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes that return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.

Inventors:
; ;
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1113230
Patent Number(s):
8618976
Application Number:
13/219,482
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

Paglieroni, David W, Mast, Jeffrey E, and Beer, N. Reginald. Radar signal pre-processing to suppress surface bounce and multipath. United States: N. p., 2013. Web.
Paglieroni, David W, Mast, Jeffrey E, & Beer, N. Reginald. Radar signal pre-processing to suppress surface bounce and multipath. United States.
Paglieroni, David W, Mast, Jeffrey E, and Beer, N. Reginald. Tue . "Radar signal pre-processing to suppress surface bounce and multipath". United States. https://www.osti.gov/servlets/purl/1113230.
@article{osti_1113230,
title = {Radar signal pre-processing to suppress surface bounce and multipath},
author = {Paglieroni, David W and Mast, Jeffrey E and Beer, N. Reginald},
abstractNote = {A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes that return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {12}
}

Works referenced in this record:

Analysis of the Time-Reversal Operator for a Small Spherical Scatterer in an Electromagnetic Field
journal, July 2004


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


Eigenmodes of the time reversal operator: A solution to selective focusing in multiple-target media
journal, September 1994


Reconstruction of buried objects surrounded by small inhomogeneities
journal, October 2000


On the Sensitivity of Time-Reversal Imaging Techniques to Model Perturbations
journal, March 2008


Space–Frequency Ultrawideband Time-Reversal Imaging
journal, April 2008


Attribute and Topology Based Change Detection in a Constellation of Previously Detected Objects
patent-application, April 2013


Resonances of perfectly conducting wires and bodies of revolution buried in a lossy dispersive half-space
journal, January 1996


Time Reversal Experiments In The Microwave Range: Description Of The Radar And Results
journal, January 2010


3D wavefront image formation for NIITEK GPR
conference, May 2009


An assessment of the fundamental performance of GPR against buried landmines
conference, April 2007


Detecting landmines with ground-penetrating radar using feature-based rules, order statistics, and adaptive whitening
journal, November 2004


Application of feature extraction methods for landmine detection using the Wichmann/Niitek ground-penetrating radar
journal, January 2005


Multistatic Response Matrix of a 3-D Inclusion in Half Space and MUSIC Imaging
journal, September 2007


Derivation and comparison of SAR and frequency-wavenumber migration within a common inverse scalar wave problem formulation
journal, June 2006


Short-pulse plane-wave scattering from buried perfectly conducting bodies of revolution
journal, January 1996


DORT method as applied to ultrawideband signals for detection of buried objects
journal, August 2003


Matching Random Tree Models of Spatio-Temporal Patterns to Tables or Graphs
conference, April 2007


Comparison of the diffraction stack and time-reversal imaging algorithms applied to short-range UWB scattering data
conference, September 2007


Full Time-Domain DORT for Ultrawideband Electromagnetic Fields in Dispersive, Random Inhomogeneous Media
journal, August 2006


A MUSIC Algorithm for Locating Small Inclusions Buried in a Half-Space from the Scattering Amplitude at a Fixed Frequency
journal, January 2005


D.O.R.T. method as applied to electromagnetic subsurface sensing
journal, May 2003


Error-Correcting Isomorphisms of Attributed Relational Graphs for Pattern Analysis
journal, January 1979


Time reversal imaging of obscured targets from multistatic data
journal, May 2005


Real data microwave imaging and time reversal
conference, June 2007


Spatially Assisted Down-Track Median Filter for GPR Image Post-Processing
patent-application, April 2013


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


A Two-Step Procedure for Characterizing Obstacles Under a Rough Surface From Bistatic Measurements
journal, September 2007


General convergence results for linear discriminant updates
conference, January 1997

  • Grove, Adam J.; Littlestone, Nick; Schuurmans, Dale
  • COLT '97 Proceedings of the tenth annual conference on Computational learning theory, p. 171-183
  • https://doi.org/10.1145/267460.267493

Spot Restoration for GPR Image Post-Processing
patent-application, April 2013


Validation of 2d iNverse Scattering Algorithms From Multi-Frequency Experimental Data
journal, January 2000


The efficacy of human observation for discrimination and feature identification of targets measured by the NIITEK ground-penetrating radar
conference, September 2004


Acoustic time-reversal mirrors
journal, January 2001


MUSIC‐Type Electromagnetic Imaging of a Collection of Small Three‐Dimensional Inclusions
journal, January 2007


Multistatic Response Matrix of Spherical Scatterers and the Back-Propagation of Singular Fields
journal, March 2008


Detection of land-mines using ultra-wideband radar data and time–frequency signal analysis
journal, January 2004


Decomposition of the Time Reversal Operator for Electromagnetic Scattering
journal, January 1999


Determining Root Correspondence Between Previously and Newly Detected Objects
patent-application, April 2013


Fuzzy-attribute graph with application to Chinese character recognition
journal, January 1992


Retrieval of inhomogeneous targets from experimental frequency diversity data
journal, November 2005


Performance of an adaptive feature-based processor for a wideband ground penetrating radar system
journal, April 2006


Optimizing the Area Under a Receiver Operating Characteristic Curve With Application to Landmine Detection
journal, February 2007


UWB Tomographic Radar Imaging of Penetrable and Impenetrable Objects
journal, February 2009


Application of the LMC algorithm to anomaly detection using the Wichmann/NIITEK ground-penetrating radar
conference, September 2003


Multistatic Ground-Penetrating Radar Experiments
journal, August 2007


Constrained filter optimization for subsurface landmine detection
conference, May 2006


A Large-Scale Systematic Evaluation of Algorithms Using Ground-Penetrating Radar for Landmine Detection and Discrimination
journal, August 2007


Synthetic Aperture Integration (SAI) Algorithm for SAR Imaging
patent-application, April 2013


A review of GPR for landmine detection
journal, September 2006


Imaging of dielectric cylinders from experimental stepped-frequency data
journal, April 2006


UWB array-based radar imaging using modified Kirchhoff migration
conference, September 2008


Ground Penetrating Radar for Buried Landmine and IED Detection
book, January 2009


Determination of resonance poles of radar targets in narrow frequency bands
conference, October 2007


Three-dimensional ground-penetrating radar imaging using multifrequency diffraction tomography
conference, September 1994

  • Mast, Jeffrey E.; Johansson, Erik M.
  • SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, SPIE Proceedings
  • https://doi.org/10.1117/12.186716

Localization and characterization of two-dimensional targets buried in a cluttered environment
journal, November 2004


Three-dimensional ground-penetrating radar imaging using synthetic aperture time-domain focusing
conference, September 1994


Pre-stack migration applied to GPR for landmine detection
journal, November 2004


The Hungarian method for the assignment problem
journal, March 1955


Time-reversed acoustics
journal, November 2000


Distributed Road Assessment System
patent-application, April 2013


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


Time-domain processing of electromagnetic data for multiple-target detection
conference, January 2009


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


Time-Reversal Analysis for Scatterer Characterization
journal, January 2004


Imaging by time reversal beamforming
patent, December 2012


Spatially Adaptive Migration Tomography for Multistatic GPR Imaging
patent-application, April 2013