Efficient Ways to Calculate Scattering from Electrically Large Objects: Method of Moments, Physical Optics, and Extrapolation Techniques
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Calculating electromagnetic scattering and radar cross section for electrically large objects like aircraft presents major computational challenges. This white paper compares numerical methods for effectively simulating the RCS of large aerospace structures: method of moments (full wave), extrapolated MoM, physical optics and hybrid techniques. Simulations of a 40-meter civil transport aircraft at 0.5-1.0 GHz demonstrate that approximate methods achieve accuracy comparable to full-wave solutions while significantly reducing computational time, making high-fidelity electromagnetic analysis practical on standard desktop hardware.
