PROJECT TITLE :
An Improved Backward SBR-PO/PTD Hybrid Method for the Backward Scattering Prediction of an Electrically Large Target
An improved hybrid technique of backward shooting and bouncing ray (SBR) physical optics (PO)/physical theory of diffraction (PTD) is proposed to analyze the backward scattering from a three-dimensional electrically giant target. The essential idea is to mix the forward-ray-tracing technique to accelerate the first backward-ray-tracing one. The proposed technique significantly reduces the computational complexity whereas guaranteeing the identical computational accuracy with the traditional backward SBR technique. The accuracy and performance of our methodology are validated and evaluated by comparison with the exact computational electromagnetic methodology (FEKO-MLFMM) and experimental knowledge for electrically small targets. The last case for the warship model illustrates that our technique will enable good speedup for electrically giant advanced objects.
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