Title :
Analysis of multicomponent LFM signals by a combined Wigner-Hough transform
Author_Institution :
INFOCOM Dept., Rome Univ., Italy
fDate :
6/1/1995 12:00:00 AM
Abstract :
The aim of the paper is the performance evaluation of a method for the analysis of mono- or multicomponent linear-frequency modulation (LFM) signals, based on the Hough transform of the Wigner-Ville distribution of the signals. A closed form expression is found for the signal-to-noise ratio and the parameter estimation accuracy. The overall method, as any nonlinear method, exhibits a threshold effect. Nevertheless, it is shown to be asymptotically efficient and offers a good rejection capability of the cross terms
Keywords :
Hough transforms; Wigner distribution; frequency modulation; interference (signal); parameter estimation; signal processing; Hough transform; Wigner-Ville distribution; closed form expression; combined Wigner-Hough transform; monocomponent linear-frequency modulation; multicomponent LFM signals; multicomponent linear-frequency modulation; nonlinear method; parameter estimation accuracy; performance evaluation; rejection capability; signal-to-noise ratio; threshold effect; Additive white noise; Chirp modulation; Integral equations; Noise robustness; Parameter estimation; Performance analysis; Signal analysis; Signal mapping; Signal to noise ratio; Time frequency analysis;
Journal_Title :
Signal Processing, IEEE Transactions on
