Detection of nonlinear frequency-modulated components in the time-frequency plane using an array of accumulators

Author

Krishnan, Sridhar ; Rangayyan, Rangaraj M.

Author_Institution

Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada

fYear

1998

Firstpage

557

Lastpage

560

Abstract

We propose a novel approach to detect nonlinear frequency-modulated (FM) components such as sinusoidal and hyperbolic FM components in multicomponent, nonstationary signals in the time-frequency (TF) plane. The approach, based upon the use of an array of accumulators, can be used to detect nonlinear FM components with varying energy in low signal-to-noise ratio environments

Keywords

Hough transforms; array signal processing; frequency modulation; minimum entropy methods; noise; parameter estimation; signal detection; signal representation; time-frequency analysis; Hough transform; SNR; accumulators array; hyperbolic FM component; instantaneous frequency; low signal-to-noise ratio environments; minimum cross-entropy; multicomponent nonstationary signals; nonlinear frequency-modulated components detection; parameter estimation; sinusoidal FM component; time-frequency distribution; time-frequency plane; time-frequency representation; varying energy signal components; Chirp modulation; Drives; Frequency estimation; Frequency modulation; Kernel; Matching pursuit algorithms; Phase detection; Phase estimation; Signal to noise ratio; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on

Conference_Location

Pittsburgh, PA

Print_ISBN

0-7803-5073-1

Type

conf

DOI

10.1109/TFSA.1998.721485

Filename

721485