Electromagnetic Scattering Study of Complex Targets on Rough Surfaces

The modelling method of two-dimensional rough surface and electrically large target is given in the first, then both of rough surface and electrically large target are discretized by triangular surface respectively. The high frequency methods based on the hybrid geometric optics (GO) and physical optics (PO) method is utilized to predict the scattering field of the rough surface and the target, and the discrete Fourier transform of the echo data in the time domain is performed to obtain the simulated SAR image. Finally, the comparison of measured RCS and the predicted RCS for electrically large target and the simulated SAR of composite target of rough surface and tank were given, which will have a great significance for radar target recognition research.