基于径向对称二元阵的非同向阵列测向方法  

The DOA Measurement Method of Non-Uniform Array Based on the Radial-Symmetrical Binary Antenna

作　　者：施龙飞[1,2] 王伟 赵研[3] 任季中 顾明超 

机构地区：[1]电子信息系统复杂电磁环境效应国家重点实验室,长沙410073 [2]国防科学技术大学电子科学与工程学院,长沙410073 [3]中国电科第五十四研究所,石家庄050081

出　　处：《宇航学报》2013年第4期583-589,共7页Journal of Astronautics

基　　金：国家自然科学基金(61201336)

摘　　要：非同向阵列是指阵元指向互不相同的阵列,其在辐射源测向方面具有独特的优势,已广泛应用于电子侦察。由于多径传输、电离层折射等传播因素的影响,电子侦察面临着更多的(椭)圆极化信号,现有的非同向阵列测向方法对(椭)圆极化信号存在固有的测向偏差。研究了电磁波及天线极化对非同向阵列测向的影响机理,提出了一种基于径向对称二元阵的非同向阵列测向方法,能够测量任意极化信号的到达方向,对于非同向阵列技术的发展具有重要的意义。仿真结果对文中所提出的算法进行了验证。The non-uniform array made up of different-direction antennas has unique advantages for the DOA measurement of radiant point,and it has been widely used in ELINT.Because of the transmission factors of multipath transmission and ionospheric refraction,more and more elliptic polarized signals present to ELINT applications.The existing DOA measurement method of the non-uniform array can＇t be applied for the elliptic polarized signals because of the DOA measurement bias.The influence mechanism of the electromagnetic wave polarization and antenna polarization on the DOA measurement is studied in this paper,and a DOA measurement method based on the radial symmetry of two elements array of the non-uniform array is proposed,which is capable of measuring DOA of arbitrary polarization signal.It is great significant to the development of non-uniform array technique.The proposed algorithm is validated by simulation results.

关 键 词：非同向阵列 测向 极化 

分 类 号：TN95[电子电信—信号与信息处理]