线性阵列DOA估计方法的研究

Research and analysis of linear array DOA estimation methods

比较了不同阵列类型的优缺点,阐述了MUSIC算法在全角域搜索时存在的不足,分析了互质线性阵列中基于子阵列法的DOA估计存在的不足,把互质线性阵列分解成两个子阵列会丢失自由度和互信息量。最后,对三种不同阵列结构下使用Root-MUSIC获取DOA估计的方法,从精确度和复杂性两方面进行了仿真并对仿真结果进行了分析。

This paper mainly analyzes the advantages and disadvantages of different types of linear arrays and focuses on the shortcomings of MUSIC algorithm in full-angle domain search. This paper explains in detail that decomposing a Co-prime linear array into two subarrays loses degrees of freedom and mutual information.Finally, three different DOA estimation methods were simulated and the simulation results were analyzed.