基于FRFT的均匀圆阵DOA估计被引量：1

DOA Estimation of Uniform Circular Array Based on FRFT

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摘要针对广泛应用于第三代移动通信系统中的均匀圆阵,将分数阶Fourier变换的时频特性和分数阶Fourier域波束形成技术相结合,给出一种多分量LFM信号的波达方向估计算法。与其他方法相比,该算法在一定程度上提高了精确度。仿真验证了在多径和多普勒频移存在的复杂信道中算法的有效性。 For the UCA widely used in the third mobile communication system,characteristics of the FRFT are combined with the beamforming technique in the fractional Fourier domain,an algorithm for the Direction Of Arrival（DOA） estimation of the multi-component LFM sources is proposed.Compared with other methods,the accuracy is enhanced in a certain extent.Simulation verifies that the method is effective in the multipath and doppler frequency of signals incident channels.

作者屈海涛齐林穆晓敏杨守义

机构地区郑州大学信息工程学院

出处《计算机工程》 CAS CSCD 北大核心 2008年第12期85-87,共3页 Computer Engineering

基金国家自然科学基金资助项目(60472044)

关键词分数阶FOURIER变换 DOA估计均匀圆阵 fractional Fourier transform Direction Of Amival（DOA） estimation Uniform Circular Array（UCA）

分类号 TP393 [自动化与计算机技术—计算机应用技术]

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