A Full-Wave Method for Radar Cross-Section Analysis with Locally Generated Structured Electromagnetic Waves
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https://doi.org/10.13052/2026.ACES.J.410302关键词:
Radar Cross Section, Microwave Orbital Angular Momentum, Finite Difference Time Domain, Method of Moments摘要
This work presents a full-wave numerical method for simulating the radar cross-section (RCS) of targets illuminated by structured electromagnetic waves generated by physically realizable sources embedded within the simulation domain. The proposed framework enables RCS prediction using practical excitation mechanisms, such as antenna arrays, rather than idealized incident fields. To demonstrate the approach, we compute the RCS of several canonical targets under illumination by an orbital angular momentum (OAM) vortex wave produced by a uniform circular array (UCA) of dipole antennas. The simulated results reveal distinctive scattering behaviors and increased RCS diversity associated with OAM-based structured wave excitation. The methodology establishes a foundation for future studies of target scattering under a broad range of structured electromagnetic fields and source configurations.
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