نتایج جستجو برای: continuous shearlae transform

تعداد نتایج: 370948  

Journal: :IEEE Trans. Signal Processing 1999
Soo-Chang Pei Min-Hung Yeh Chien-Cheng Tseng

The continuous fractional Fourier transform (FRFT) performs a spectrum rotation of signal in the time–frequency plane, and it becomes an important tool for time-varying signal analysis. A discrete fractional Fourier transform has been recently developed by Santhanam and McClellan, but its results do not match those of the corresponding continuous fractional Fourier transforms. In this paper, we...

Alireza Sadremomtaz, Ebrahim Siri

Wavelet transformation is one of the most practical mathematical transformations in the field of image processing, especially image and signal processing. Depending on the nature of the multiresolution analysis, Wavelet transformation become more accessible and powerful tools. In this paper, we refer to the mathematical foundations of this transformation.   Introduction: The...

2010
Abdolaziz Ashrafian Mehrdad Rostami

In this paper, a method based on continuous wavelet transform is suggested for calculation of flicker power. The flicker power can be utilized to identify the flicker direction to a flicker source with respect to a monitoring point. In our proposed method, using continuous Gaussian wavelet transform, pure flicker waveforms are extracted from the measured voltage and current signals. The flicker...

Journal: :IOP Conference Series: Materials Science and Engineering 2015

Journal: :Journal of Computational and Graphical Statistics 2006

2014
Elena A Lebedeva Eugene B Postnikov

The application of the continuous wavelet transform to the study of a wide class of physical processes with oscillatory dynamics is restricted by large central frequencies owing to the admissibility condition. We propose an alternative reconstruction formula for the continuous wavelet transform, which is applicable even if the admissibility condition is violated. The case of the transform with ...

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