FDTD polarimetric scattering analysis for detection of stricken man-made object

This paper investigates polarimetric scattering feature generated from man-made objects for accurately detecting stricken man-made buildings. To verify the generating mechanism of the polarimetric scattering components from the objects, we carry out the Finite-Difference Time-Domain (FDTD) polarimetric scattering analysis for simplified man-made target model. The dependency of the polarimetric scattering feature on the variation of squint angle is in detail investigated. It is confirmed from the estimation based on the scattering power decomposition with rotation of the coherency matrix that the double-bounce scattering contribution tends to be enhanced, and the volume scattering becomes small, even when the target objects are obliquely aligned to the illumination direction, and they set on rough surface. This tendency can be observed for the deformed man-made object model. Also, it is found that the modified correlation coefficient in LR circular polarization basis is useful for detecting the man-made objects on rough surface.