时间反演超分辨率亚波长阵列的建模仿真和量化设计理论研究

项目名称： 时间反演超分辨率亚波长阵列的建模仿真和量化设计理论研究

项目编号： No.61471105

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 邵维

作者单位： 电子科技大学

项目金额： 80万元

中文摘要： 现代大容量高速无线通信系统中，多天线的设计面临如何在有限空间构建密集独立通道的难题。基于时间反演（time reversal，TR）电磁波的时-空聚焦和空间超分辨率聚焦特性，本项目旨在实现具有TR电磁波远场超分辨率能力的亚波长微结构阵列天线，并探索其高效、准确的可计算分析手段和量化设计理论。首先，研究亚波长微结构的传输模、辐射模和凋落模的内在机理，建立将携带近场超分辨率信息的凋落模转化为传输模和辐射模的理论模型，进而实现远场超分辨率特性；其次，在含亚波长阵列的局部通信环境下，研究多尺度复杂TR电磁波问题的高效仿真方法，实现其可计算建模；然后，基于凋落模转化为传输模和辐射模的模型，研究实现远场高分辨率特性的亚波长阵列的高效优化理论，实现其可量化设计，并完成原理性实验系统的构建和实验验证。项目的研究将为发展新型TR电磁波超分辨率应用系统奠定坚实的理论与技术基础。

中文关键词： 时间反演；超分辨率；亚波长阵列；时域算法；凋落波

英文摘要： In modern high-capacity and high-speed wireless communication systems, the design of multi-antennas faces the problem of how to build intensive independent channels in limited space. Based on the the spatial and temporal focusing and spatial super-resolution focusing characteristics of time reversal (TR) electromagnetic waves, this project aims to realize the sub-wavelength antenna arrays with far-field super-resolution ability of TR electromagnetic waves, and investigate the methods of computational modeling and quantitative designing efficiently. Firstly, the internal mechanism of transmission, radiation and evanescence modes in sub-wavelength micro-structures is studied, and the theoretical model from evanescence modes with near-field super-resolution information to transmission and radiation modes will be established. Secondly, in the local communication space including sub-wavelength arrays, the efficient simulation algorithms for multi-scale and complex TR electromagnetic problems are studied to realize computational modeling. Thirdly, based on the model from evanescence modes to transmission and radiation modes, the efficient optimization theory for sub-wavelength array design is developed to present the far-field super-resolution characteristics. At the same time, a prototype experimental system to demonstrate our theory and design is constructed. The research of this project can establish important theoretical and technological foundations for future developments of super-resolution application systems for TR electromagnetic waves.

英文关键词： time reversal;super resolution;sub-wavelength array;time-domain algorithm;evanescent wave