This example details the setup and execution of RCS calculations using XGtd’s X3D PO MEC model and compares the predictions to those made using XFdtd.

Crosshole Ground Penetrating Radar is examined in XFdtd. The ability to find COP and MOG data is shown.

This example demonstrates the ability of XFdtd to simulate dielectric materials with off-diagonal terms in the permittivity tensor. The case in point here is the computation of bistatic radar cross section from an anisotropic sphere excited by a plane wave. 

Basic bistatic scattering is demonstrated for a conducting sphere with XF results compared to measurements.

Wind turbines located near a radar installation can significantly interfere with the ability of the radar to operate properly.  Remcom has performed a number of research efforts into the impact that wind turbines and wind farms have on radar returns for Air Traffic Control (ATC) radar, early warning radar, weather radar, and instrumentation radar.  Highlights of some of these effects and relevant samples and white papers are provided in this brief overview.

Radar scattering from a turbine’s moving blades can interfere with Doppler radar systems, producing ghost images. Understanding the scattering properties of a blade helps to mitigate any potential issues. This study compares the radar cross section of a metal turbine blade, a hollow fiberglass turbine blade, and a hollow fiberglass turbine blade with a metal spar using XFdtd.

Wind turbines located near radar installations can significantly interfere with a radar’s ability to detect its intended targets. Remcom’s XGtd software is a high frequency solver capable of calculating the radar cross section of electrically large objects. In this paper, interference from wind turbines is predicted using XGtd simulations.

Using WaveFarer's included scripts, users can leverage Remcom's XGtd path viewer to generate ray path animations. This clip demonstrates the capability by showing backscatter in an indoor scenario, visualizing how waves diffract through doorways and penetrate walls.

WaveFarer’s diffuse scattering model increases the fidelity of the simulation by revealing how paths interact with rough surfaces, leading to additional clutter in radar returns.

This short animation shows predicted RCS from an air traffic control radar with an aircraft flying over a wind farm, before and after the static ground clutter (returns from terrain) are filtered out.

Remcom’s XGtd can simulate the propagation paths of fields interacting with two wind turbines in close proximity. XGtd then generates a movie that shows the directions and magnitudes of the strongest propagation paths, including multipath occurring between the turbines.