| 基于非均匀时延的频率估计改进算法 |
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| 引用本文： | 管亮中,唐恬,胡林华. 基于非均匀时延的频率估计改进算法[J]. 空军雷达学院学报, 2011, 0(5): 336-338 |
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| 作者姓名： | 管亮中 唐恬 胡林华 |
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| 作者单位： | [1]空军雷达学院研究生管理大队,武汉430019 [2]95942部队,武汉430313 [3]空军雷达学院五系,武汉430019 |
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| 摘 要： | 为了减少算法运算量,将多级维纳滤波器引入非均匀时延频率估计中,对原有算法进行改进.改进算法通过简单的乘加运算得到噪声子空间,无需对观测数据协方差矩阵进行特征根分解,因此也更加易于硬件实现;结合一维MUSIC高分辨算法完成对信号频率的参数估计.仿真结果表明：在信噪比大于0dB时,改进算法与原有算法性能相当.
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| 关 键 词： | 非均匀时延 多级维纳滤波器 频率估计 |
ImprovedAlgorithm for Frequency Estimation Based on Non-uniform Delay |
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| GUAN Liang-zhong,TANG Tian,HU Lin-hua. ImprovedAlgorithm for Frequency Estimation Based on Non-uniform Delay[J]. Journal of Air Force Radar Academy, 2011, 0(5): 336-338 |
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| Authors: | GUAN Liang-zhong TANG Tian HU Lin-hua |
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| Affiliation: | 1.Department of Graduate Management,AFRA,Wuhan 430019,China;2.95942 Unit of the PLA,Wuhan 430313,China;3.No.5 Department,AFRA,Wuhan 430019,China) |
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| Abstract: | This paper is to introduce the multi-stage Wiener filter（MSWF） to non-uniform delay frequency estimation for reducing the computation of the original algorithm,improving the original one.By the simple multi-plication and addition operation in the improved algorithm,it obtains the noise sub-space,and is no need to do any eigenvalue decomposition of the covariance matrix of the observed data,thus to have an easy hardware implemen-tation.Finally,it carries out the parameter estimation of signal frequency in terms of one-dimensional MUSIC high resolution algorithm.Simulation results show that the performance of the improved algorithm matches to that of the original one when the SNR is above 0 dB. |
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| Keywords: | non-uniform delay MSWF frequency estimation |
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