Full wave RCS modeling and analysis of armed and unarmed radar targets

Basically, a radar system is a system that transmits radio frequency and electromagnetic waves to desired regions and receives electromagnetic waves reflected from targets and performs functions such as detection, tracking and imaging about the region. The Radar Cross Sectional area (RCS) is a measure of the scattered power in given direction when a target is illuminated by a sending electromagnetic wave. Radar Cross Sectional area is an imaginary field that indicates how much power is radiate according to the transmitter power density. In this study, Radar Cross Sectional area value of the basic and complex geometries were calculated with the aid of the Physical Optics method in Ansys HFSS programme. First, basic targets such as cubes, triangles, squares and circular plates , then more complex targets such as almonds, conical spheres, etc. were modeled and frequency and angle dependent change of the Radar Cross Sectional area values have been examined in numerical environment. A simple ammunition model which is modeled by using cylinder and cone was added to the model of the winged almond created by combining the examined simple and complex models. In order to see the effect of this ammunition on the Radar Cross Sectional area depending on the polarization, frequency and angle, simulation studies have been done in numerical environment. Finally, MQ-1B unmanned aerial vehicle and AGM-114 ammunition were modeled in three dimensions and the effect of the low and high frequencies in addition to parameters such as number of ammunition, direction of the incoming wave to target, polarization on the Radar Cross Sectional area was examined.