=== An Overview of FDTD Modeling ===
[[Image:FDTD93.png|thumb|300px500px|A metal ellipsoid objectGeometry of an imported aircraft CAD model...]][[Image:FDTD94.png|thumb|300px500px|...and its Yee mesh.]]
In the Finite Difference Time Domain (FDTD) method, a discretized form of Maxwellâs equations is solved numerically and simultaneously in both the 3D space and time. During this process, the electric and magnetic fields are computed everywhere in the computational domain and as a function of time starting at t = 0. From knowledge of the primary fields in space and time, one can compute other secondary quantities including frequency domain characteristics like scattering [[parameters]], input impedance, far field radiation patterns, radar cross section, etc.