An Efficient Implementation of the Adaptive Chirplet Decomposition

Author

Wang, Yong ; Jiang, Yicheng

Author_Institution

Res. Inst. of Electron. Eng. Technol., Harbin Inst. of Technol.

Volume

1

fYear

2006

fDate

16-20 2006

Abstract

The adaptive chirplet decomposition contains a lot of unknown parameters and has much difficulty in its implementation. In this condition, an efficient implementation of the adaptive chirplet decomposition is presented in this paper. By computing the cubic phase (CP) function of the signal, it is shown that the CP function is concentrated along the frequency rate law of the signal, and the peak of the CP function yields the estimates of the chirplet rate, time center and the amplitude; then the initial frequency and the time extent can be obtained by the dechirp technique. The scheme of the algorithm is shown in this paper, and the simulation results demonstrate the validity of the method proposed

Keywords

signal processing; time-frequency analysis; adaptive chirplet decomposition; cubic phase function; dechirp technique; Amplitude estimation; Chirp; Dictionaries; Frequency estimation; Matching pursuit algorithms; Phase estimation; Signal processing; Signal resolution; Time frequency analysis; Yield estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2006 8th International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-9736-3

Electronic_ISBN

0-7803-9736-3

Type

conf

DOI

10.1109/ICOSP.2006.344493

Filename

4128829