基于仿生原理的电小间距天线阵列超分辨测向方法研究

项目名称： 基于仿生原理的电小间距天线阵列超分辨测向方法研究

项目编号： No.61301009

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 刘颜回

作者单位： 厦门大学

项目金额： 26万元

中文摘要： 受Ormia ochracea寄生蝇优异的超分辨声源定位能力的启发，本项目研究在电小间距天线阵列上实现超分辨高精度仿生测向的机理及其实现的方法。首先，深入研究增强两天线感应信号相位差的仿生耦合电路，结合电小间距阵元电磁耦合等效电路，建立双天线电磁耦合-仿生耦合电路模型，并在此基础上发展圆环阵列超分辨测向的多端口电磁耦合-仿生耦合电路网络模型。该电路等效模型是分析和设计仿生测向阵列的主要依据。其次，研究仿生测向天线的阵列结构和导向矢量特性，修正原有的高分辨测向算法。最后，结合电磁耦合、仿生耦合模型及测向算法的研究，在电小间距（0.05～0.1 个波长）的双天线及圆环阵列上达到或超过相应半波长间距阵列的测向精度，实现超分辨测向性能。该项目研究有望突破电小间距天线阵列高精度测向的技术瓶颈，丰富和拓展目前无源电磁测向的方法，具有重要的学术研究价值，且成果在军用及民用领域均具有广泛的应用价值。

中文关键词： 电小间距阵列；无源测向；仿生学测向；；

英文摘要： This research is inspired by a parasitic fruit fly called Ormia ochracea for its remarkable ability of locating the cricket's sound source, and focuses on both the theory and critical technologies for implementing biologically inspired electrically small antenna arrays with super-resolution direction finding. Firstly, a biomimetic circuit model is studied in detail which is incoprated into two receiving antennas for amplifying the phase difference of receiving signals. By combining with the equivalent circuit of electromagnetic coupling between two antennas, we can build a circuit network model for fully describing the two-element biomimetic antenna array. Such a circuit model can be extended to N-port equivalent network model for N-element biomimetic antenna array which can include both the electromagnetic coupling and biomimetic coupling between the array elements. This model is the basis of analysis and design of biomimetic direction finding antenna arrays. Secondly, high resolution direction finding algorithm is stuided and modified by incorporating the special array manifold and steering vector of the proposed biomimetic antenna array. Finally, we will design and fabricate two prototypes of biomimetic electrically small antenna array: one is with two elements and the other is with four or eight circularly d

英文关键词： Electrically small arrays；passive direction finding；biologically inspired direction finding；；