2D FDTD Cylinder Scattering RCS Computation

This text describes a comprehensive MATLAB implementation of a 2D Finite-Difference Time-Domain (FDTD) code for electromagnetic scattering analysis. The code incorporates plane wave source implementation using TF/SF (Total Field/Scattered Field) separation technique for clean wave introduction. Field value iteration follows Yee's algorithm with central difference approximations for Maxwell's equations. The implementation includes two advanced boundary conditions: second-order Mur absorbing boundary conditions for simple truncation and Uniaxial Perfectly Matched Layer (UPML) boundaries for superior absorption performance. The code features near-to-far-field transformation using surface equivalent theorem, enabling RCS (Radar Cross Section) calculations through post-processing modules. For validation purposes, the package includes analytical Mie series solutions for cylindrical scattering problems, allowing direct comparison with FDTD results. The post-processing module calculates monostatic and bistatic RCS patterns with proper normalization. This comprehensive toolkit provides researchers and engineers with a robust framework for computational electromagnetics studies, featuring complete workflow from simulation to result analysis.