The FDTD simulation of the vehicle structure was run on [https://aws.amazon.com/ Amazon Web Services]. For the purpose of this project, we logged into an Amazon instance via Remote Desktop Protocol (RDP) and used a c4.4xlarge instance running Windows Server 2012. This instance had 30 GB of RAM memory, and 16 virtual CPU cores. The CPU for this instance was an Intel Xeon E5-2666 v3 (Haswell) processor. The thread factor setting essentially tells the FDTD engine how many CPU threads to use during [[EM.Tempo]]'s time-marching loop. For a given system, some experimentation may be needed to determine the best number of threads to use. Eight thread factors were used for this simulation, with a total computation time of 285 minutes.
First, we consider The figure below shows the electric field distributions at four planes: two vertical E and H planes coincident with distribution of the principal YZ and ZX planes, respectively, and two horizontal planes, one on vehicle-antenna combination structure in the reflector aperture and vertical ZX plane that passes through the other slightly above center of the horn aperturevehicle.
<table>