The Study of False Target Creation in Synthetic Aperture Radars

Radar imaging systems are a complement to passive remote sensing. In this technology, target's characteristics are determined by the target's scattering field. The target's characteristics in radar images cause the detection of the target. Different methods are used for deception in passive defense. One of these methods replaces the main target by a false one. The weakness of this approach is that the replacement of distributed targets is very difficult and, in some cases, almost impossible. In this paper, while studying the effective parameters, a method is proposed to replace the false targets by calculating the scattering fields. This model gives the response close to the main target. The proposed method facilitates the implementation of the false target as deception. According to the results obtained in this paper, behavioral patterns of the targets in the image are derived from the shape of the target in the direction and location of the scattering centers.  The material of the target has a small effect on the target's pattern and the greatest effect on the magnitude of scattering fields. Other parameters are independent and fixed for all targets. So, creating the scatterer centers of the target with its own shape and planting them on the ground can be used to deceive the radar system. The simulation of the target's scattering fields is performed using CAD model in CST software and image formation of the target's scattering data is performed in MATLAB software.