Circular Polarization Correlation Coefficient for Detection of Non-natural Targets Aligned Not Parallel to SAR Flight Path in the X-band POLSAR Image Analysis
Circular Polarization Correlation Coefficient for Detection of Non-natural Targets Aligned Not Parallel to SAR Flight Path in the X-band POLSAR Image Analysis
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DOI：
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发表时间：
2004-10
影响因子：
0.7
通讯作者：
K. Kimura;Y. Yamaguchi;T. Moriyama;Hiroyoshi Yamada
中科院分区：
文献类型：
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作者：
K. Kimura;Y. Yamaguchi;T. Moriyama;Hiroyoshi Yamada
提出了一种检测墙体与合成孔径雷达(SAR)航迹不平行的建筑物和房屋的方法。实验观测表明，由于这些目标的后向散射特性较小，很难检测到它们。该检测方法基于圆极化相关系数，充分利用极化合成孔径雷达(POLSAR)数据。由于相关系数对于具有反射对称性的自然分布目标和与照明方向垂直的非自然目标是实数，而对于非垂直于雷达视线(LOS)的非自然目标则是一个复数，因此它似乎是检测倾斜对齐的非自然目标的有效指标。使用X波段极化和干涉合成孔径雷达(PI-SAR)单路径数据集以及其他极化指数显示了检测结果。
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.