chirplet

chirplet

[′chərp·lət]
(mathematics)
A wavelet whose instantaneous frequency drifts upward or downward at a fixed rate throughout its duration.
References in periodicals archive ?
Saniie, "A successive parameter estimation algorithm for chirplet signal decomposition", IEEE Int.
Davies, "Sparse detection in the chirplet transform: application to FMCW radar signals," IEEE Transactions on Signal Processing, vol.
Contrast this with the far-reaching but ultimately unsuccessful "Canto-Os," whose row of "O" stanzas ("O chirplet," "O wavelet," "O toneburst") never quite rises above the fragments that compose it, leaving readers with little more than a vague feeling that they are being handed pieces of something that doesn't fit together.
A recently proposed method removes JEM by using the adaptive chirplet representation [11].
Convergence of the chirplet expansion by this method often fails depending on the initial values of the parameters.
In this paper, we propose a method of accurately estimating the initial parameters for fast expansion of the signal into a sum of chirplet basis functions.
The basis function widely used includes Inverse Discrete Fourier Transform (IDFT), DCT, Haar, chirplet, Gabor and curvelet basis etc.
9] recently examined Lamb wave modal attenuation with propagation distance by comparing the results from a chirplet transform (CT) to those from a short-time Fourier transform (STFT).
Jacobs, "Attenuation analysis of Lamb waves using the chirplet transform," EURASIP Journal on Advances in Signal Processing, Vol.
Li, "Damage detection for plate-like structure using matching pursuits with chirplet atom," in Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, vol.
Secondly, for the complicated scene, it is not sparse in space domain, however, the echoes of the specific scene are sparse on a proper basis, for instance, chirplet basis, wavelet basis and so on.
Hay varios diccionarios que se pueden implementar e incluso combinar: wavelets, wavelets segmentados, diccionario Gabor, diccionarios multiescala Gabor, wavelet packet (WP), coseno, chirplets y warplets (Chen, Donoho, & Saunders, 2001).