First, we create an RCS observable with 1 degree increments in both phi and theta directions. Although increasing the angular resolution of our farfield can increase simulation time, The RCS of electrically large structures tend to have very narrow peaks and nulls, so the resolution is required.
We also create two field sensors -- one with a z-normal underneath the aircraft, and another with an x-normal along the length of the aircraft.
[[Image:ff settings.png|thumb|left|150px|Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.]]