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Classification of Target Buried in the Underground by Radar Polarimetry
Moriyama, Toshifumi
5754
Nakamura, Masafumi
5755
Yamaguchi, Yoshio
19
Yamada, Hiroyoshi
50
Boerner, Wolfgang-M.
5758
radio applications
subsurface radar
FM-CW radar
scattering matrix
polarization anisotropy coefficient
power polarization signature
This paper discusses the classification of targets buried in the underground by radar polarimetry. The subsurface radar is used for the detection of objects buried beneath the ground surface, such as gas pipes, cables and cavities, or in archeological exploration operation. In addition to target echo, the subsurface radar receives various other echoes, because the underground is inhomogeneous medium. Therefore, the subsurface radar needs to distinguish these echoes. In order to enhance the discrimination capability, we first applied the polarization anisotropy coefficient to distinguish echoes from isotropic targets (plate, sphere) versus anisotropic targets (wire, pipe). It is straightforward to find the man-made target buried in the underground using the polarization anisotropy coefficient. Second, we tried to classify targets using the polarimetric signature approach, in which the characteristic polarization state provides the orientation angle of an anisotropic target. All of these values contribute to the classification of a target. Field experiments using an ultra-wideband (250 MHz to 1 GHz) FM-CW polarimetric radar system were carried out to show the usefulness of radar polarimetry. In this paper, several detection and classification results are demonstrated. It is shown that these techniques improve the detection capability of buried target considerably.
journal article
The Institute of Electronics, Information and Communication Engineers
1999-06
application/pdf
IEICE transactions on communications
6
E82-B
951
957
IEICE transactions on communications
AA10826261
09168516
https://niigata-u.repo.nii.ac.jp/record/1824/files/e82-b_6_951.pdf
eng
http://www.ieice.org/jpn/trans_online/
copyright © 1999 IEICE
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