Title :
Detection of chirp and other components in the time-frequency plane using the Hough and Radon transforms
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 chirp (linear frequency modulated) components in multicomponent nonstationary signals in the time-frequency (TF) plane. The approach, based on the Hough and Radon transforms of TF distributions, can be used to detect chirp components with varying energy in unknown signal-to-noise ratio environments. In addition to detection of chirps, the proposed technique could also be used as a tool to evaluate the TF resolution provided by different TF analysis methods
Keywords :
Hough transforms; Radon transforms; chirp modulation; frequency modulation; signal resolution; statistical analysis; time-frequency analysis; Hough transforms; Radon transforms; SNR; chirp detection; linear frequency modulated components; multicomponent nonstationary signals; signal to noise ratio; time-frequency analysis methods; time-frequency distributions; time-frequency plane; time-frequency resolution; varying energy; Chirp modulation; Drives; Energy resolution; Frequency modulation; Matching pursuit algorithms; Maximum likelihood detection; Radar detection; Signal resolution; Signal to noise ratio; Time frequency analysis;
Conference_Titel :
Communications, Computers and Signal Processing, 1997. 10 Years PACRIM 1987-1997 - Networking the Pacific Rim. 1997 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-3905-3
DOI :
10.1109/PACRIM.1997.619920
