Studying the Effects of Wind Farms on a Terrain to the Scattered Field by Utilizing the ISAR Concept

In this paper, the radar cross section (RCS) values of the wind turbines (WTs) are simulated and presented depending on the material of the blades and the tower, if they are metal, concrete, fiberglass or radar absorbing material (RAM) coated. The two dimensional (2D) inverse synthetic aperture radar (ISAR) images of a wind farm are formed by using a total of five WTs. A terrain data is adopted from a Digital Terrain Elevation Data (DTED) map and used in the analysis. The polarization effects of the incident field are observed clearly at the scattered field. To analyze the effects of the terrain, different terrain specifications are used such as soil, sea or concrete. All 2D ISAR images are constructed by the help of a Shooting and Bouncing Ray based simulator that can predict the scattered and the diffracted fields from complex bodies at high frequencies.