chirplet

chirplet

[′chərp·lət]
(mathematics)
A wavelet whose instantaneous frequency drifts upward or downward at a fixed rate throughout its duration.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The authors of [15,16] propose the Chirplet Transform (CT), and the Adaptive Slope Transform (AST) in a VSD-fed IM in the startup transient to detect the fault related harmonics evolution and the eccentricity related harmonics.
Several different approaches such as short-time Fourier transform, Wigner-Ville distribution, discrete wavelet transform, discrete cosine transform, and chirplet transform, and Fractional Fourier transform have been proposed to cope with the overlapping problem [1, 8].
In recent research, advanced nonparametric methods were widely applied to gearbox early fault detection, such as the continuous wavelet transform (CWT) [3], the multiscale chirplet path pursuit (MSCPP) [4], and multiresolution Fourier transform [5].
Helgason, "Detecting highly oscillatory signals by chirplet path pursuit," Applied and Computational Harmonic Analysis, vol.
Saniie, "A successive parameter estimation algorithm for chirplet signal decomposition", IEEE Int.
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.
To remove the image blurring caused by the effect of jet engine modulation, the method based on the adaptive chirplet representation was applied [17].
Ling, "Application of adaptive chirplet representation for ISAR feature extraction from targets with rotating parts," IEE Proceedings Online, Vol.
Chirplet techniques [12] as well as linear FM basis decomposition [13] can be used to perform feature extraction.
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).