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Proceedings Paper

Calibration of the ARL boomSAR using rigorous scattering models for fiducial targets over ground
Author(s): Marc A. Ressler; Barbara L. Merchant; David C. Wong; Lam H. Nguyen; Norbert Geng; Lawrence Carin
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Paper Abstract

The Army Research Laboratory synthetic aperture radar system is placed atop a boom lift, and therefore the system is termed a `BoomSAR'. The UWB character of this system, covering a frequency spectrum from 40 - 1200 MHz, makes accurate polarimetric calibration a nontrivial matter. The response of the standard trihedral fiducial target is poorly understood at VHF and UHF frequencies, for which the wave interaction with the soil can be an important issue. Here we employ a rigorous method-of-moments analysis of UWB scattering from a trihedral reflector over ground. The soil is modeled as a lossy, dispersive half space, accounted for rigorously via the half-space Green's function. The numerical algorithm is used to evaluate the angle-dependent, polarimetric frequency dependence of scattering from a trihedral target, at VHF and UHF frequencies. This comprehensive study of UWB scattering from a trihedral over soil is critical for system calibration.

Paper Details

Date Published: 20 July 1999
PDF: 7 pages
Proc. SPIE 3704, Radar Sensor Technology IV, (20 July 1999); doi: 10.1117/12.354605
Show Author Affiliations
Marc A. Ressler, Army Research Lab. (United States)
Barbara L. Merchant, Army Research Lab. (United States)
David C. Wong, Army Research Lab. (United States)
Lam H. Nguyen, Army Research Lab. (United States)
Norbert Geng, Duke Univ. (United States)
Lawrence Carin, Duke Univ. (United States)


Published in SPIE Proceedings Vol. 3704:
Radar Sensor Technology IV
Robert Trebits; James L. Kurtz, Editor(s)

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