摘要
传统方法设计近场高分辨成像雷达的阵列时,往往需要大量且分布密集的阵元,这样的设计会带来巨大的开销和制作工艺要求高等问题。为了避免上述问题,本论文将MIMO与UWB相结合,提出了一种基于等效相位中心原理设计UWB MIMO近场成像雷达稀疏阵列的方法,并对等效相位中心近似带来的误差做了补偿。然后通过数值仿真工具(FDTD)进行仿真,考察了设计的阵列的波束方向图,并分别对单个点目标和分布式目标进行成像,仿真结果验证了该阵列设计方法的有效性和应用于近场高分辨成像的可行性。
The array design of near-field high-resolution imaging radar usually needs a large number of dense array elements,which will increase cost vastly and require high manufacturing technology.In order to avoid these problems,this paper combines MIMO with UWB,and proposes a method to design sparse array of UWB near-field imaging radar based on the principle of equivalent phase center,and compensates the error caused by the approximation of equivalent phase center.Then,the beam pattern of the array is simulated by the numerical simulation tool(FDTD).A single point target and distributed targets are imaged by FDTD simulations respectively.The simulation results verify the effectiveness of the array design method and the feasibility of its application in near-field high resolution imaging.
作者
张小虎
顾红
苏卫民
ZHANG Xiaohu;GU Hong;SU Weimin(Nanjing University of Science and Technology,Nanjing 210094)
出处
《火控雷达技术》
2019年第3期1-6,共6页
Fire Control Radar Technology
基金
中国自然科学基金(61471198&61671246)
江苏省自然科学基金(BK20160847)
