| 均匀圆阵多宽带LFM信号的二维DOA估计 |
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| 引用本文： | 李昕,辛元芳.均匀圆阵多宽带LFM信号的二维DOA估计[J].通信技术,2011,44(1):40-42. |
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| 作者姓名： | 李昕 辛元芳 |
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| 作者单位： | 安徽理工大学,电气与信息工程学院,安徽,淮南,232001 |
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| 摘 要： | 针对均匀圆阵（UCA）,根据不同线性调频（LFM）信号在对应阶次上的分数阶傅里叶变换（FRFT）域具有能量聚集性的特点,将不同时频特性LFM信号在FRFT域分离成一系列平稳单频信号,构造出FRFT域上新的空时频分布模型数据,结合MUSIC算法,提出了一种新的均匀圆阵多宽带LFM信号的二维DOA估计。通过仿真实验验证了该方法的有效性。
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| 关 键 词： | 均匀圆阵 宽带线性调频信号 二维波达方向估计 分数阶傅里叶变换 |
2D DOA Estimation of Multi-wideband LFM Signals with Uniform Circular Arrays |
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| LI Xin,XIN Yun-fan.2D DOA Estimation of Multi-wideband LFM Signals with Uniform Circular Arrays[J].Communications Technology,2011,44(1):40-42. |
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| Authors: | LI Xin XIN Yun-fan |
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| Affiliation: | LI Xin,XIN Yun-fan(Institute of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China) |
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| Abstract: | Aiming at the uniform circular arrays,a new method for 2D DOA(direction of arrival) of multi-wide-band linear frequency modulation(LFM) sources by FRFT and MUSIC algorithms is presented.A new array model in FRFT domain is constructed,which is based on the fact that the LFM signal has the energy-concert rated performance in the FRFT domain.Simulation proves the effectiveness of the new method. |
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| Keywords: | UCA(uniform circular array) wide-band LFM 2-D DOA estimation FRFT |
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