Linear shift varying filtering of non-stationary chirp signals

Author

Bikdash, Marwan ; Yu, Kai-bor

Author_Institution

Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

1988

fDate

0-0 1988

Firstpage

428

Lastpage

432

Abstract

The problem of specifying a linear-shift-varying (LSV) filter to recover deterministic slowly-time-varying (STV) signals in the presence of noise or signal interference is reviewed. The LSV filter is specified based on the knowledge of the signal region of support in the time-frequency plane, or equivalently its instantaneous frequency (IF) and time-varying bandwidth (TVBW), which can be easily described using the short-time Fourier transform. A modified and more general LSV filter specification procedure based on the knowledge of the signal TVBW, IF, and rate of change of the IF is proposed. The filters produced by this procedure are shown to have a superior performance.<>

Keywords

Fourier transforms; filtering and prediction theory; interference (signal); signal processing; Fourier transform; linear shift varying filtering; nonstationary chirp signals; signal processing; time-frequency plane; time-varying bandwidth; Bandwidth; Chirp; Filtering; Fourier transforms; Interference; Large scale integration; Niobium; Nonlinear filters; Signal processing; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

System Theory, 1988., Proceedings of the Twentieth Southeastern Symposium on

Conference_Location

Charlotte, NC, USA

ISSN

0094-2898

Print_ISBN

0-8186-0847-1

Type

conf

DOI

10.1109/SSST.1988.17089

Filename

17089