| 基于FFT与MUSIC的改进DOA估计算法 |
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| 引用本文： | 计征宇,杨向华.基于FFT与MUSIC的改进DOA估计算法[J].系统仿真学报,2010,22(2). |
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| 作者姓名： | 计征宇 杨向华 |
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| 作者单位： | 中国工程物理研究院电子工程研究所,绵阳,621900 |
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| 摘 要： | 针对MUSIC算法在进行信号波达方向(DOA)估计时谱峰搜索运算量大的问题,提出了一种基于FFT多波束算法与MUSIC算法的联合DOA估计方法。该方法采用FFT多波束算法形成多个波束,近似估计信号DOA,获得对应波束指向,再利用MUSIC算法实现对信号DOA的精确估计。这样就只需在该波束指向对应的空域范围内搜索,减小了DOA估计的运算量。
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| 关 键 词： | DOA FFT MUSIC 数字多波束 |
Improved Algorithm of DOA Based on FFT and MUSIC |
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| JI Zheng-yu,YANG Xiang-hua.Improved Algorithm of DOA Based on FFT and MUSIC[J].Journal of System Simulation,2010,22(2). |
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| Authors: | JI Zheng-yu YANG Xiang-hua |
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| Institution: | JI Zheng-yu1,YANG Xiang-hua1 (Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang 621900,China) |
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| Abstract: | In order to reduce the computational complexity in searching the peak,an improved algorithm of DOA estimation based on FFT algorithm and MUSIC algorithm was proposed.Firstly,it uses FFT algorithm to form multi-beam,and get a rough estimation of DOA.Then it uses MUSIC algorithm to get an accuracy estimation of DOA.With this method,searching of the peak is worked in small angle range,and the computational complexity is reduced. |
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| Keywords: | DOA FFT MUSIC digital multi-beam |
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