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Proceedings Paper

Imaging of buried and foliage-obscured objects with an ultrawide-bandwidth polarimetric SAR
Author(s): Dan R. Sheen; Terry B. Lewis; Susan C. Wei; D. W. Kletzli
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Paper Abstract

The Environmental Research Institute of Michigan (ERIM) has developed a unique ground- based, portable, synthetic aperture radar (SAR). This SAR images targets in their natural backgrounds without the expense of an airborne sensor and with higher performance (bandwidth, resolution) than existing airborne systems. A horizontal 36-foot long aluminum truss supports a rail and an antenna cartridge, which is moved along the rail to allow synthetic aperture focusing. The system is fully-polarimetric and has collected data over the frequency band of 400 - 1300 MHz resulting in a nominal resolution of 0.17 m in range and 0.5 m in cross-range. The low frequency range of the system allows for penetration of soil (to shallow depths) as well as foliage and the system has been used to collect images of buried and foliage- obscured targets. The ground imagery collected to date includes steel oil drums buried at depths of up to one-meter. Both the drums as well as the disturbances due to digging the holes are visible in the imagery. Foliage imagery includes portions of a Lear jet under a mature hardwood forest. Due to the low frequency and wide bandwidth of the sensor (400 - 1300 MHz), obscured objects are clearly visible in the SAR imagery. Other responses in the foliage imagery are due to the dihedral-like ground-trunk reflections.

Paper Details

Date Published: 15 November 1993
PDF: 9 pages
Proc. SPIE 1942, Underground and Obscured Object Imaging and Detection, (15 November 1993); doi: 10.1117/12.160347
Show Author Affiliations
Dan R. Sheen, Environmental Research Institute of Michigan (United States)
Terry B. Lewis, Environmental Research Institute of Michigan (United States)
Susan C. Wei, Environmental Research Institute of Michigan (United States)
D. W. Kletzli, Environmental Research Institute of Michigan (United States)


Published in SPIE Proceedings Vol. 1942:
Underground and Obscured Object Imaging and Detection
Nancy K. Del Grande; Ivan Cindrich; Peter B. Johnson, Editor(s)

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