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Title: Reconstruction Techniques for Sparse Multistatic Linear Array Microwave Imaging

Sequentially-switched linear arrays are an enabling technology for a number of near-field microwave imaging applications. Electronically sequencing along the array axis followed by mechanical scanning along an orthogonal axis allows dense sampling of a two-dimensional aperture in near real-time. In this paper, a sparse multi-static array technique will be described along with associated Fourier-Transform-based and back-projection-based image reconstruction algorithms. Simulated and measured imaging results are presented that show the effectiveness of the sparse array technique along with the merits and weaknesses of each image reconstruction approach.
Authors:
;
Publication Date:
OSTI Identifier:
1237816
Report Number(s):
PNNL-SA-102258
400403909
DOE Contract Number:
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Passive and Active Millimeter-Wave Imaging XVII, May 5, 2014, Baltimore, Maryland. Proceedings of the SPIE, 9078:Paper No. 907801
Publisher:
D Wikner and AR Luukanen; SPIE , Bellingham, WA, United States(US).
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
millimeter-wave imaging; microwave imaging; sparse arrays; concealed-weapon detection