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北京理工大学电子工程系,北京,100081
网络出版:2008-09-25,
纸质出版:2008
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张 峰, 陶 然. 分数阶Fourier域谱估计及其应用[J]. 电子学报, 2008,36(9):1723-1727.
ZHANG Feng, TAO Ran. Power Spectral Estimation and Its Application in Fractional Fourier Domain[J]. Acta Electronica Sinica, 2008, 36(9): 1723-1727.
张 峰, 陶 然. 分数阶Fourier域谱估计及其应用[J]. 电子学报, 2008,36(9):1723-1727. DOI:
ZHANG Feng, TAO Ran. Power Spectral Estimation and Its Application in Fractional Fourier Domain[J]. Acta Electronica Sinica, 2008, 36(9): 1723-1727. DOI:
本文定义了随机信号的分数阶功率谱和分数阶相关函数
得到了分数阶功率谱和分数阶相关函数的关系.在此基础上
推导出分数阶Fourier域滤波器的输入输出分数阶功率谱的关系.仿真结果表明
分数阶功率谱估计可以用于chirp信号的检测和估计
以及分数阶系统辨识.
The definition of the fractional power spectrum and the fractional correlation for random signals are proposed
and the expression of the fractional power spectral density in terms of the fractional correlation function is described.Then
the fractional power spectral relations for the fractional Fourier filter are derived.Finally
the theory obtained is verified by simulations
and indicate the potential applications in chirp signals detection and fractional system identification.
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