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Mathematical tests about the existence and applications of PPS-wavelets in function approximation problems
(Spie - Int Soc Optical Engineering, 1998-01-01)
Neural networks and wavelet transform have been recently seen as attractive tools for developing eficient solutions for many real world problems in function approximation. Function approximation is a very important task ...
Multiscale Analysis of GPS Time Series from Non-decimated Wavelet to Investigate the Effects of Ionospheric Scintillation
(Sociedade Brasileira de Matemática Aplicada e Computacional, 2015-08-01)
Due to the numerous application possibilities, the theory of wavelets has been applied in several areas of research. The Discrete Wavelet Transform is the most known version. However, the downsampling required for its ...
Un estudio del escalamiento de imágenes mediante interpolación basada en la Transformada Discreta Wavelet de Daubechies
(Universidad Inca Garcilaso de la Vega, 2011-10)
En este artículo, se presentan los resultados obtenidos al realizar interpolación de imágenes basada en la Transformada Discreta Wavelet (DWT) con la wavelet de Daubechies de orden 4 (DB4) para lograr el escalamiento de ...
Dual-tree complex wavelet transform applied to fault monitoring and identification in aeronautical structures
(2014-01-01)
This paper proposes the application of the dual-tree complex wavelet transform on fault monitoring and identification in aeronautical structures. For this purpose, a multiscale analysis from phase of the complex wavelet ...
Análises de Fourier e Wavelet para o estudo de variabilidade estelar e trânsito planetário em curvas de luz da missão TESS
(Universidade Federal do Rio Grande do NorteBrasilUFRNFisica Bacharelado, 2021-04-30)
Computational methods are essential tools for the treatment of various problems in astrophysics. In the present work, we analyzed four light curves from the TESS space mission and studied the stellar variability and planetary ...
Estudo da transformada rápida wavelet e sua conexão com banco de filtros
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Matemática Aplicada e EstatísticaProbabilidade e Estatística; Modelagem Matemática, 2008-09-17)
In this work we presented an exhibition of the mathematical theory of orthogonal compact support wavelets in the context of multiresoluction analysis. These are particularly attractive wavelets because they lead to a stable ...
Harmonics filtering and detection of disturbances using wavelets
(1999-12-01)
Traditional mathematical tools, like Fourier Analysis, have proven to be efficient when analyzing steady-state distortions; however, the growing utilization of electronically controlled loads and the generation of a new ...
Análise de vibrações em sistemas discretos de massas concentradas e com dois graus de liberdade através da transformada wavelet
(Universidade Estadual Paulista (UNESP), 2014)
Non-decimated Wavelet Transform for a Shift-invariant Analysis
(Sociedade Brasileira de Matemática Aplicada e Computacional, 2018)
Due to the ability of time-frequency location, the wavelet transform has been applied in several areas of research involving signal analysis and processing, often replacing the conventional Fourier transform. The discrete ...