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Analytic Physical Optics Solution for Bistatic, 3D Scattering From a Dihedral Corner Reflector

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1 Author(s)
Jackson, J.A. ; Air Force Inst. of Technol., Dayton, OH, USA

We derive an analytic scattering model for 3D bistatic scattering from a dihedral using geometrical optics (GO) and physical optics (PO). We use GO to trace ray reflections, and we evaluate the PO integral(s) for the field scattered by each plate of the dihedral. Multiple cases of reflection geometry are considered to account for effects of the dihedral plate size and antenna aspect angles. The complex-valued (amplitude and phase) scattering response is derived. The resulting parametric scattering model is presented in terms of the vertical and horizontal co-polarization and cross-polarization responses that correspond to the outputs of industry-standard numerical prediction codes. Comparing the derived model to available codes for method of moments (MoM), shooting and bouncing rays (SBR), and parametric models (PM), we demonstrate that the derived solution achieves the same accuracy as SBR, approximates MoM, is more accurate than PM, and does so in fast computation time comparable to a PM.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 3 )

Date of Publication:

March 2012

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