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Title: Ultra wideband ground penetrating radar imaging of heterogeneous solids

Abstract

A non-invasive imaging system for analyzing engineered structures comprises pairs of ultra wideband radar transmitters and receivers in a linear array that are connected to a timing mechanism that allows a radar echo sample to be taken at a variety of delay times for each radar pulse transmission. The radar transmitters and receivers are coupled to a position determining system that provides the x,y position on a surface for each group of samples measured for a volume from the surface. The radar transmitter and receivers are moved about the surface, e.g., attached to the bumper of a truck, to collect such groups of measurements from a variety of x,y positions. Return signal amplitudes represent the relative reflectivity of objects within the volume and the delay in receiving each signal echo represents the depth at which the object lays in the volume and the propagation speeds of the intervening material layers. Successively deeper z-planes are backward propagated from one layer to the next with an adjustment for variations in the expected propagation velocities of the material layers that lie between adjacent z-planes.

Inventors:
 [1];  [2]
  1. Brentwood, CA
  2. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871970
Patent Number(s):
5835054
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ultra; wideband; ground; penetrating; radar; imaging; heterogeneous; solids; non-invasive; analyzing; engineered; structures; comprises; pairs; transmitters; receivers; linear; array; connected; timing; mechanism; allows; echo; sample; variety; delay; times; pulse; transmission; coupled; position; determining; provides; surface; samples; measured; volume; transmitter; moved; attached; bumper; truck; collect; measurements; positions; return; signal; amplitudes; represent; relative; reflectivity; receiving; represents; depth; lays; propagation; speeds; intervening; material; layers; successively; deeper; z-planes; backward; propagated; layer; adjustment; variations; expected; velocities; lie; adjacent; radar pulse; return signal; material layer; penetrating radar; radar transmitter; linear array; material layers; delay time; propagation velocities; signal echo; signal amplitude; signal amplitudes; ground penetrating; delay times; band radar; pulse transmission; structures comprises; radar echo; comprises pairs; wideband radar; ultra wideband; timing mechanism; /342/

Citation Formats

Warhus, John P, and Mast, Jeffrey E. Ultra wideband ground penetrating radar imaging of heterogeneous solids. United States: N. p., 1998. Web.
Warhus, John P, & Mast, Jeffrey E. Ultra wideband ground penetrating radar imaging of heterogeneous solids. United States.
Warhus, John P, and Mast, Jeffrey E. Thu . "Ultra wideband ground penetrating radar imaging of heterogeneous solids". United States. https://www.osti.gov/servlets/purl/871970.
@article{osti_871970,
title = {Ultra wideband ground penetrating radar imaging of heterogeneous solids},
author = {Warhus, John P and Mast, Jeffrey E},
abstractNote = {A non-invasive imaging system for analyzing engineered structures comprises pairs of ultra wideband radar transmitters and receivers in a linear array that are connected to a timing mechanism that allows a radar echo sample to be taken at a variety of delay times for each radar pulse transmission. The radar transmitters and receivers are coupled to a position determining system that provides the x,y position on a surface for each group of samples measured for a volume from the surface. The radar transmitter and receivers are moved about the surface, e.g., attached to the bumper of a truck, to collect such groups of measurements from a variety of x,y positions. Return signal amplitudes represent the relative reflectivity of objects within the volume and the delay in receiving each signal echo represents the depth at which the object lays in the volume and the propagation speeds of the intervening material layers. Successively deeper z-planes are backward propagated from one layer to the next with an adjustment for variations in the expected propagation velocities of the material layers that lie between adjacent z-planes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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