【作者】 陈旭； 黄先锋； 周剑军； 朱静；

【Author】 CHEN Xu,HUANG Xian-feng,ZHOU Jian-jun,ZHU Jing Information System Laboratory,GUET,Guilin,Guangxi 541004,China

【机构】 桂林电子科技大学信息系统研究室；

【摘要】 在现代的军事、民用通信以及相对应的雷达天线探测系统中,虚拟阵元形成做为实现阵列信号扩展中的一个重要内容,目的是使得阵元数目在虚拟上得到增加从而减少基阵产生主波束宽度,提高天线阵的性能。如何在固定条件下产生更高分辨度的波束,降低干扰,成为许多学者的重点研究内容。基于现实工程实现的限制,本文论述了在阵元数目、孔径大小确定的条件下利用维纳滤波技术进行阵列扩展,从而实现了孔径在虚拟上得到扩大、盲信号主波束宽度减小、提高基阵分辨率的要求。该方法具有计算量小、易于实时信号处理等优点。仿真结果表明该方法的可行性、有效性和实用性。更多还原

【Abstract】 In modern military,civilian communications and corresponding to the radar detection system,virtual array conformation is an important content in signal expansion.It’s purpose is to make the elements of array increased in virtual and improve the performance of array.How to produce mainbeam better and reduce the interference in certain condition become the focus of researchers.Based on restriction of reality engineering,to make the aperture extended in virtual,minish the width of mainlobe and improve the resolving power,the paper dicusses how to make use of the technology of Wiener filtering in array expansion when the elements of array and size of aperture are determination.The method has the characteristics of less caculation and realtime processing.Simulation results demonstrate its feasibility and effectiveness.更多还原