一种新的空间分离矢量天线阵列和叉积测向算法  

A Novel Spatially Spread Electro-Magnetic Vector Sensor Array and Cross Product Direction Finding

作　　者：李阳[1] LI Yang(Southwest China Institute of Electronic Technology, Chengdu Sichuan 610036, China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《长沙大学学报》2018年第2期15-19,共5页Journal of Changsha University

基　　金：中国西南电子技术研究所技术创新基金项目"稳相的高精度载波差分自适应抗干扰技术"(批准号:H17038.1)

摘　　要：在传统的多单元共点构成的电磁矢量天线中,一种经典且有效的算法是通过叉积运算估计入射信号的坡印廷矢量,进而得到入射信号的到达角(Direction of Arrival,DOA)参数.为了降低共点天线单元之间互耦和简化天线结构,文献中提出了空间分离矢量天线阵列.针对空间分离矢量天线阵列,分析了电场和磁场分量实部和虚部的多种叉积运算组合,发现传统的叉积算法只是众多组合情况之一.利用其他叉积组合实现了DOA参数的估计,多种叉积运算的组合还能够提高DOA估计精度,同时也得到了新的空间分离矢量天线阵列结构.仿真验证了算法的正确性和有效性.For the electromagnetic vector antenna composed of multiple units co-located together, a classical and effective algorithm is the cross product algorithm to estimate the Poynting vector of the incident signal, and then the arrival angle of incident signals （ Direction of Arrival, DOA）. In order to reduce the mutual coupling among antenna elements and simplify the structure of antenna, solution has been proposed in the literature by spatial separation of antenna units. For the spatially spread polarization sensitive array, the cross product combinations of real and imaginary parts of electric and magnetic components are analyzed, and among them is the traditional cross product algorithm. Other cross products can be exploited to estimate the DOA for improved parameter accuracy. A novel effective array structure is derived at the same time. The correctness and effectiveness of the new array and algorithm are verified by simulations.

关 键 词：空间分离矢量天线 叉积 波达角 

分 类 号：TN911.7[电子电信—通信与信息系统]