Multilayered Wall Characteristic Extraction for Through Wall Radar Systems

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$69,886.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
W15P7T-11-C-A012
Agency Tracking Number:
A102-084-0875
Solicitation Year:
2010
Solicitation Topic Code:
A10-084
Solicitation Number:
2010.2
Small Business Information
eWave Informatics
3 Red Bird Lane, Conshohocken, PA, -
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
Y
Duns:
962845686
Principal Investigator:
Benita Luttcher
President
(610) 299-9659
bluttcher@ewaveinfo.com
Business Contact:
Benita Luttcher
President
(610) 299-9659
bluttcher@ewaveinfo.com
Research Institution:
Stub




Abstract
The primary objective of this Phase I project is to develop radar-based techniques and algorithms to accurately estimate the parameters of walls, such as dielectric constant, conductivity (or loss-tangent) and thickness, as well as to devise methods that can characterize inhomogeneous walls by detecting presence of foiled-back insulation, reinforced wires/studs, water pipes, and enclosed air-gaps, e.g., in hollow concrete (cinder-block) walls. The wall parameter estimation can be performed either in time-domain (suitable for modulated pulse or impulse radar operation) or in frequency-domain (suitable for CW or step-frequency radar operation). To achieve this we propose to apply and compare the accuracy and robustness of several alternative techniques including time-domain Reflectometry, Least-Squares method, Singularity Expansion Method (SEM), Evolutionary based optimization and Ellipsometry. In addition, we will investigate the following techniques for characterization of inhomogeneous walls: i) a technique based on the frequency signature of calibrated wall"s reflected signal to detect the presence of conductor a back-plated wall, ii) a hybrid of"effective"parameter estimation and subsurface imaging to characterize and image existence and location of re-bars, air-gaps and/or other wall"s interior structures, and iii) use of cross-polar scattered fields or other polarization-based radar techniques for detection of reinforced wires or water pipes and their orientations.

* information listed above is at the time of submission.

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