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Circular Polarization Correlation Coefficient for Detection of Non-natural Targets Aligned Not Parallel to SAR Flight Path in the X-band POLSAR Image Analysis(Sensing)
Kimura, Koji
5696
Yamaguchi, Yoshio
19
Moriyama, Toshifumi
5698
Yamada, Hiroyoshi
50
the circular polarization basis
correlation coefficient
phase angle
non-natural targets
Line-Of-Sight
POLSAR
This paper proposes a method to detect buildings and houses whose walls are not parallel to Synthetic Aperture Radar (SAR) flight path. Experimental observations show that it is difficult to detect these targets because of small backscattering characteristics. The detection method is based on the correlation coefficient in the circular polarization basis, taking full advantage of Polarimetric SAR (POLSAR) data. Since the correlation coefficient is real-valued for natural distributed targets with reflection symmetry and for non-natural targets orthogonal to illumination direction, and it becomes a complex number for non-natural targets aligned not orthogonal to radar Line-Of-Sight (LOS), the value seems to be an effective index for detection of obliquely aligned non-natural targets. The detection results are shown using the X-band Polarimetric and Interferometric SAR (Pi-SAR) single-path data set in conjunction with other polarimetric indices.
journal article
The Institute of Electronics, Information and Communication Engineers
2004-10
application/pdf
IEICE transactions on communications
10
E87-B
3050
3056
IEICE transactions on communications
AA10826261
09168516
https://niigata-u.repo.nii.ac.jp/record/1812/files/110003222101.pdf
eng
http://www.ieice.org/jpn/trans_online/
copyright(C)2004 IEICE