Title :
A simple iteration scheme for adapting time-frequency representation
Author :
Changzheng, MA ; Shouhong, Zhang ; Licheng, Jiao
Author_Institution :
Key Lab. of Radar Signal Process., Xidian Univ., Xi´´an, China
Abstract :
Window length and chirp rate-dependent short time Fourier transform (STFT) are powerful tools for the analysis of nonstationary signals. We define a criterion of instantaneous frequency concentration measure (IFCM), and give a simple iterative scheme to obtain an optimal time-frequency representation (TFR)
Keywords :
Fourier transforms; adaptive signal processing; iterative methods; optimisation; signal representation; time-frequency analysis; STFT; chirp rate; instantaneous frequency concentration measure; iteration scheme; nonstationary signal analysis; optimisation; short time Fourier transform; time-frequency representation; window length; Chirp; Frequency measurement; Kernel; Radar imaging; Radar scattering; Signal analysis; Signal resolution; Speech analysis; Time frequency analysis; Time measurement;
Conference_Titel :
Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4325-5
DOI :
10.1109/ICOSP.1998.770198
