摘要
为了减缩雷达反射截面(RCS),提高工作带宽,该文基于时控反射面提出一种新型Salisbury屏幕,研究UHF雷达的频谱搬移。首先利用电磁特性的可控性,设计一种由可调电阻层、介质层和金属接地层构成的反射调制板,然后构建动态二相传输线等效电路,并且在周期性频率选择表面(FSS)加载一层电感。理论推导和仿真验证表明该屏幕能对大带宽多方向、不同极化的UHF雷达来波信号进行频谱搬移,减缩RCS,降低远距离移动目标的检测概率。
To reduce Radar Cross-Section（RCS）,improve operation bandwidth,this paper proposes an innovative Salisbury screen based on time-controlled surface and researches the frequency shifting of UHF radar signal.First,a reflective modulation board which is composed of adjustable impedance sheet,dielectric spacer and grounded slab is presented by using the controllability of electromagnetic properties.Second,the equivalent circuit of dynamic two-phase transmission line is established,and an inductance layer is loaded on a periodic Frequency Selective Surface（FSS）.Theoretical derivation and simulation results show that Salisbury screen can realize the spectrum shifting for UHF radar signal with large bandwidth,multi-directional,as well as different polarizations.Moreover,this screen can reduce RCS and detection probability of the long distance moving target.
作者
廖希
王洋
陈前斌
邵羽
叶志红
LIAO Xi;WANG Yang;CHEN Qianbin;SHAO Yu;YE Zhihong(Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, Chin)
出处
《电子与信息学报》
EI
CSCD
北大核心
2018年第6期1419-1425,共7页
Journal of Electronics & Information Technology
基金
国家自然科学基金(61701061)
重庆市基础科学与前沿技术研究专项资金(CSTC2017JCYJA0817)
重庆邮电大学博士启动基金(A2016-110)~~
关键词
雷达散射截面
电磁超材料
频率选择表面
频谱搬移
Radar Cross-Section （RCS）
Electromagnetic metamaterials
Frequency Selective Surface （FSS）
Spectrum shifting
