摘要: |
在均匀线性阵列模型下,结合常规波束形成算法、Capon最小方差无失真响应(MVD
R)波束形成算法、MUSIC算法、ESPRIT算法和RootMUSIC算法等几种主要到达角(DOA)估
计算法的原理,分析了互耦效应影响这些算法的作用机理,并利用MATLAB进行了数值仿真。
理论分析和仿真结果表明,互耦效应带来的误差增大了DOA估计算法的估计误差,降低了估
计成功概率,严重影响了算法的性能。 |
关键词: 均匀线性阵列 到达角估计 互耦效应 波束形成 估计误差 |
DOI: |
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基金项目: |
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Impact of Mutual Coupling on Direction of Arrival Estimation |
XIE Xin,CHENG Guo-biao,LU Cui-hua |
(Naval Aeronautics and Astronautics University, Yantai 264001, China;The 71st Element,Unit 91960 of PLA, Shantou 515073, China) |
Abstract: |
Using a uniform linear array (ULA) model, the mechanism that how mutua
l coupling affects several main DOA(Direction of Arrival) estimation algorithms
such as conventiona
l beamforming algorithm, Capon′s MVDR algorithm, MUSIC algorithm, ESPRIT algor
ithm and RootMUSIC algorithm is analyzed, and then the simulation is performed
using MATLAB. The analysis and simulation results show that the errors due to
the mutual coupling enhance the errors of DOA estimation algorithms, reduce the
probability of success, and degrade the performance of algorithms seriously. |
Key words: uniform linear array(ULA) DOA estimation mutual coupling beamforming estimatio
n error |