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。
关键词:
分数阶Fourier变换,
DOA估计,
均匀圆阵
Abstract: 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.
Key words:
fractional Fourier transform,
Direction Of Amival(DOA) estimation,
Uniform Circular Array(UCA)
中图分类号:
屈海涛;齐 林;穆晓敏;杨守义. 基于FRFT的均匀圆阵DOA估计[J]. 计算机工程, 2008, 34(12): 85-87.
QU Hai-tao; QI Lin; MU Xiao-min; YANG Shou-yi. DOA Estimation of Uniform Circular Array Based on FRFT[J]. Computer Engineering, 2008, 34(12): 85-87.