基于MUSIC算法的双平面阵列天线DOA估计

DOA estimation of dual planar array antenna based on MUSIC algorithm

提出一种由两个平面阵列天线相互垂直放置而组成的双平面阵列天线,并对此双平面阵列天线模型进行数学建模及理论构建。阐述了MUSIC算法的基本原理并进行了具体分析。利用MUSIC算法对此阵列天线进行了三维空间DOA估计,其中对每一个平面阵列分别估计出三维空间到来角中的两个参数;并利用此双平面阵列天线DOA估计的特点,对三维空间到来角的三个参数进行参数配对,从而估计出三维空间DOA。数值计算仿真结果证明了该阵列天线用于DOA估计的可行性和有效性,并且随着信噪比的提高,算法的估计精确度也相应提高。

A dual planar array antenna located in vertical line was proposed and its mathematical modeling and theory were constructed.The basic principle was described and analyzed.The three dimensional space DOA of the antenna was estimated using the MUSIC algorithm,in which two parameters of the 3D space DOA were estimated by each of the Planar Array.The characteristic of the DOA estimation of dual plane arrays antenna were used to match the two parameters of the 3D DOA and the 3D space DOA could be estimated.The feasibility and the validity of the DOA estimation were proved by the simulation results,and the accuracy of the algorithm was improved when the SNR was increased.