Title: Zero source insertion technique to account for undersampling in GPR imaging

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 the 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:

Chambers, David H; Mast, Jeffrey E; Paglieroni, David W

Issue Date:

Tue Feb 25 00:00:00 EST 2014

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1125013

Patent Number(s):

8659467

Application Number:

13/219,504

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

G01S13/003 - {Bistatic radar systems
G01S13/885 - {for ground probing
G01S13/90 - using synthetic aperture techniques {, e.g. synthetic aperture radar [SAR] techniques}

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

G01V3/12 - operating with electromagnetic waves {
G01V3/15 - specially adapted for use during transport, e.g. by a person, vehicle or boat

G - PHYSICS G06 - COMPUTING G06N - COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS

G06N99/00 - Subject matter not provided for in other groups of this subclass

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DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Aug 26

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION