[4] Boualem B.Estimating and interpreting the instantaneous frequency of a signal-Part II:algorithms and application[J].Proceedings of the IEEE,1992,80(4):540-568.

[6] Delpart N.Asymptotic wavelet and Gabor analysis:extraction of instantaneous frequencies[J].IEEE Trans.Information Theory,1992,38(3):644-664.

[7] Akay O,Boudreaux-Bartels G F.Fractional convolution and correlation via operator methods and an application to detection of linear FM signals[J].IEEE Trans.on Signal Processing,2001,49(5):979-993.

[8] Tao R,Deng B and Wang Y.Research progress of the fractional Fourier transform in signal processing[J].Science in China:Series F Information Sciences,2006,49(1):1-25.

[9] Kim D-W,Lee K Y,Lee D.Evaluation of the performance of clustering algorithms in kernel induced feature space[J].Pattern Recognition,2005,38(4):607-611.