时间和频率二维自适应的锥形核时频表示
THE CONE-KERNEL TIME-FREQUENCY REPRESENTATION USING ADAPTIVE SCHEME OVER BOTH TIME AND FREQUENCY
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摘要: 本文提出了一种时间和频率二维自适应的锥形核时频表示。在不同的时频平面点采用不同的锥形长度参数,以与待分析信号相适应。它的性能优于仅时间一维自适应的锥形核时频表示,而计算时间增加并不多。Abstract: A cone-kernel time-frequency representation using adaptive scheme over both time and frequency is presented. For adapting to the analysed signal, the time-frequency representation uses varying cone length in each time-frequency point. It yields better results and requires only slightly more computation than the cone-kernel time-frequency representation that uses only time adaptive scheme.
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Zhao Y, et al. The use of[2]nonstationary signals. IEEE Jones D L, Baraniuk R G.[3]Trans. on Signal Processing cone-shaped kernels for generalized time-frequency representations of Trans. on ASSP, 1990, ASSP-38(7): 1084-1091.[4]A simple scheme for adapting time-frequency representations. IEEE Trans. on Signal Processing, 1994, SP-42(12): 3530-3535.[5]Czerwinski R N, Jones D L. Adaptive cone-kernel time-frequency analysis. IEEE Trans. on Signal Processing, 1995, SP-43(7): 1715-1719. -
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