用于改变物体散射模式的散射控制器设计

Design of Scattering Controller to Change the Scattering Cross Section of Arbitrary Objects

为使雷达无法准确探测出物体形状,可以采用通过改变物体散射截面的方式。基于变换光学的二维电磁散射控制器可以控制物体的散射截面,使物体具有另外物体的散射模式。通过将散射控制器覆盖在理想导体柱或介质柱上,可以得到减小或放大的散射截面。此外,通过改变散射控制器的本构参数,还可以得到各种形状的理想导体的散射截面。通过仿真对比散射控制器和物体的电场分布和远场辐射图,证明此散射控制器可以改变物体散射模式。

In order to make the radar unable to detect the shape of the object accurately,it can be realized by changing the scattering cross section of the object.The two-dimensional electromagnetic scattering controller based on transform optics can control the scattering cross section of the object and make the object have another scattering mode.By covering the scattering controller on an ideal conducting or dielectric cylinder,the scattering cross section can be reduced or enlarged.In addition,by changing the constitutive parameters of the scattering controller,the scattering cross sections of ideal conductors of various shapes can also be obtained.Through the simulation and comparison of the electric field distribution and far-field radiation of the scattering controller and the object,it is proved that the scattering mode of the object can be changed by the scattering controller.