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Proceedings Paper

Radar polarimetry applied to the classification of underground targets
Author(s): Toshifumi Moriyama; Masafumi Nakamura; Yoshio Yamaguchi; Hiroyoshi Yamada; Wolfgang-Martin Boerner
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Paper Abstract

This paper discusses the classification of target buried in the underground by the radar polarimetry. The subsurface radar is used in the detection of objects buried beneath the ground surface, such as archeological exploration, pipes, gas cables and cavities. However, in addition to target echo, the subsurface radar receives various echoes including clutter, because the underground is inhomogeneous medium. Therefore, the subsurface radar needs the ability to distinguish these echoes. In order to enhance the ability, we first applied the polarization anisotropy coefficient to classify the echo into isotropic target (plate, sphere) and anisotropic target (wire, pipe). It is easy to find the man- made target buried in the underground by polarization anisotropy coefficient. Second, we used a three-component decomposition technique for a scattering matrix. Third, we tried to classify targets using polarimetric signature approach. Moreover, the characteristic polarization state gives the oriented angle of anisotropic target. Therefore, these values contribute the classification of the target. The field experiments using an FM-CW radar system were carried out to show the usefulness of the radar polarimetry. In this paper, several detection and classification results are displayed. It is shown that these techniques improve the detection capability of buried target.

Paper Details

Date Published: 23 December 1997
PDF: 8 pages
Proc. SPIE 3120, Wideband Interferometric Sensing and Imaging Polarimetry, (23 December 1997); doi: 10.1117/12.278952
Show Author Affiliations
Toshifumi Moriyama, Niigata Univ. (Japan)
Masafumi Nakamura, Niigata Univ. (Japan)
Yoshio Yamaguchi, Niigata Univ. (Japan)
Hiroyoshi Yamada, Niigata Univ. (Japan)
Wolfgang-Martin Boerner, Univ. of Illinois/Chicago (United States)

Published in SPIE Proceedings Vol. 3120:
Wideband Interferometric Sensing and Imaging Polarimetry
Harold Mott; Wolfgang-Martin Boerner, Editor(s)

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