Title :
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
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;
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
DOI :
10.1109/TFSA.1998.721485
