宽带宽角偏振无关的雷达散射截面缩减超表面
Broadband and Broad-angle Polarization-independent Metasurface for Radar Cross Section Reduction.
机构信息
Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China.
出版信息
Sci Rep. 2017 Jan 20;7:40782. doi: 10.1038/srep40782.
In this work, a broadband and broad-angle polarization-independent random coding metasurface structure is proposed for radar cross section (RCS) reduction. An efficient genetic algorithm is utilized to obtain the optimal layout of the unit cells of the metasurface to get a uniform backscattering under normal incidence. Excellent agreement between the simulation and experimental results show that the proposed metasurface structure can significantly reduce the radar cross section more than 10 dB from 17 GHz to 42 GHz when the angle of incident waves varies from 10° to 50°. The proposed coding metasurface provides an efficient scheme to reduce the scattering of the electromagnetic waves.
在这项工作中，提出了一种用于雷达散射截面 (RCS) 减小的宽带宽角偏振无关随机编码超表面结构。利用有效的遗传算法来获得超表面单元的最佳布局，以在正常入射下获得均匀的后向散射。仿真和实验结果的良好一致性表明，当入射角从 10°变化到 50°时，所提出的编码超表面结构可使雷达散射截面从 17GHz 到 42GHz 时显著降低超过 10dB。所提出的编码超表面为减小电磁波的散射提供了一种有效的方案。
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