摘要
由于传统波达方向(DOA)估计算法对接收天线阵列的阵元一致性要求高,即幅度和相位响应要求一致,在工程应用中受到较大限制。针对该问题,结合均匀圆阵的特点,通过引入阵元幅度和相位不一致因子对传统MUSIC算法的模型加以改进,提出了一种改进的MUSIC算法。该算法降低了阵元的一致性要求,可通过迭代求解的方法来完成对多个信源来波方向进行估计。仿真和分析结果表明,提出的算法可有效地进行多个目标的DOA估计。
The traditional direction of arrival （DOA） estimation algorithm has high conformity with array amplitude and phase element of receiving arrays. Consequently it is limited seriously in engineering application. In this paper, an improved model of MUSIC algorithm is proposed based on the variances of uniform circular array element＇s amplitude and phase, and it reduces the request of the conformity of the array element. The improved algorithm can be utilized to estimate the direction of the receiving waves from multiple information sources through iteration procedure. The simulation results indicate that the proposed algorithm can estimate the DOA from different targets effectively.
出处
《电讯技术》
北大核心
2013年第9期1164-1168,共5页
Telecommunication Engineering
关键词
均匀圆阵
DOA估计
MUSIC算法
迭代处理
uniform circular array
DOA estimation
MUSIC algorithm
iteration calculation
