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Multilayered Wall Characteristic Extraction for Through Wall Radar Systems

Award Information

Department of Defense
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
eWave Informatics
3 Red Bird Lane Conshohocken, PA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2011
Title: Multilayered Wall Characteristic Extraction for Through Wall Radar Systems
Agency: DOD
Contract: W15P7T-11-C-A012
Award Amount: $69,886.00


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.

Principal Investigator:

Benita Luttcher
(610) 299-9659

Business Contact:

Benita Luttcher
(610) 299-9659
Small Business Information at Submission:

eWave Informatics
3 Red Bird Lane Conshohocken, PA -

EIN/Tax ID: 273393361
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No