Title :
Contributions to time varying spectrum estimation using the instantaneous power spectrum (IPS)
Author :
Hippensteil, R.D. ; Oliveira, Paulo M.
Author_Institution :
Dept. of Electr. & Comput. Eng., US Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
An examination is made of the spectral content of time-varying signals using a modified version of the instantaneous power spectrum (IPS). The pseudo-Wigner-Ville distribution (PWD) has been used extensively to display the time-varying spectral information. Potential problem associated with PWD are spectral cross terms and endpoint resolution. A modified IPS is shown to be less sensitive to these types of problems. In addition, IPS can operate with real signals sampled at the Nyquist rate. Representative test cases are provided
Keywords :
filtering and prediction theory; spectral analysis; Nyquist rate; endpoint resolution; instantaneous power spectrum; spectral analysis; spectral cross terms; time varying spectrum estimation; Chirp; Computer displays; Interference; Sampling methods; Signal analysis; Signal generators; Signal resolution; Spectral analysis; Testing; Time frequency analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266874
