一种新的二次时频分布和几种主要二次时频分布的比较研究
A NEW QUADRATIC TIME-FREQUENCY DISTRIBUTION AND A COMPARATIVE STUDY OF SEVERAL POPULAR QUADRATIC TIME-FREQUENCY DISTRIBUTIONS
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摘要: 本文提出一种新的Cohen类时频分布并对几种主要Cohen类时频分布进行了实验比较研究。结果表明,基于指数分布(ED)和锥形核分布(CKD)的复合核分布(ECKD)具有更强的抑制交叉干扰性质,同时几乎不会使ED或CKD的时频分辨力降低。Abstract: A new quadratic time-frequency distribution (TFD) with a compound kernel is proposed and a comparative study of several popular quadratic TFD is carried out. It is shown that the new TFD with compound kernel has stronger ability than the exponential distribution(ED) and the cone-shaped kernel distribution(CKD) in reducing cross terms, meanwhile almost not decreasing the time-frequency resolution of ED or CKD.
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Wigner E P. Phys[J].Rev.1932, 40(2):749-759[2]Vine J. Cables et Transmission, 1948, 2A, 61-74.[3]Classen T A C M. Mecklenblauker W F G. Philips J. Res., 1980, 35(6): 217-250, 276-300, 372-389.[4]Cohen L. J. Math. Phys., 1966, 7: 781-786.[5]Choi H I, Williams J W. IEEE Trans. on ASSP, 1989, ASSP-37(6): 862-871.[6]Zhao Y, Atlas L, Marks R. IEEE Trans. on ASSP, 1990, ASSP-38(7): 1084-1091.[7]Jeong J, Williams J W. IEEE Trans. on SP, 1992, SP-40(2): 402-411. -
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