Title :
Estimation of LFM signal parameters by using the fractional fourier transform
Author :
Ayaz, Ozgün ; Serbes, Ahmet ; Durak-Ata, Lutfiye
Author_Institution :
Elektron. ve Haberlesme Muhendisligi Bolumu, Yildiz Teknik Univ., İstanbul, Turkey
Abstract :
A detector for estimating the chirp rate of linear frequency modulated signals is proposed. The proposed detector is formulated by calculating the supremum of the 4th-power modulus of the fractional Fourier transform of the signal. It has similar performance to the modulus square detector of the Radon transform yet its computational complexity is much lower. The proposed detector has been generalized for the nth-power modulus of the fractional Fourier transform (n >; 2) and computer simulations have been performed to confirm its efficiency amongst existing detectors.
Keywords :
Fourier transforms; Radon transforms; computational complexity; frequency modulation; parameter estimation; signal detection; 4th-power modulus; LFM signal parameter estimation; Radon transform; chirp rate estimation detector; computational complexity; computer simulations; fractional Fourier transform; linear frequency modulated signals; modulus square detector; Chirp; Conferences; Detectors; Fourier transforms; Optical signal processing;
Conference_Titel :
Signal Processing and Communications Applications (SIU), 2011 IEEE 19th Conference on
Conference_Location :
Antalya
Print_ISBN :
978-1-4577-0462-8
Electronic_ISBN :
978-1-4577-0461-1
DOI :
10.1109/SIU.2011.5929841
