一種新的二次時頻分布和幾種主要二次時頻分布的比較研究
A NEW QUADRATIC TIME-FREQUENCY DISTRIBUTION AND A COMPARATIVE STUDY OF SEVERAL POPULAR QUADRATIC TIME-FREQUENCY DISTRIBUTIONS
-
摘要: 本文提出一種新的Cohen類時頻分布并對幾種主要Cohen類時頻分布進(jìn)行了實驗比較研究。結(jié)果表明,基于指數(shù)分布(ED)和錐形核分布(CKD)的復(fù)合核分布(ECKD)具有更強的抑制交叉干擾性質(zhì),同時幾乎不會使ED或CKD的時頻分辨力降低。
-
關(guān)鍵詞:
- 信號處理; 時頻分析; Cohen類時頻分布
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. -
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. -
計量
- 文章訪問數(shù): 2331
- HTML全文瀏覽量: 169
- PDF下載量: 384
- 被引次數(shù): 0
下載:
