Title :
A new time-frequency transform algorithm for Multi-LFM signals parameter estimation
Author :
Xihui, Zhang ; Jingye, Cai ; Wenqin, Wang ; Yuanwang, Yang ; Guangjun, Wen
Author_Institution :
Sch. of Commun. & Inf. Eng., UESTC, Chengdu
Abstract :
In this paper, a new time-frequency transform (NTFT) to estimate multi-component linear frequency modulated (multi-LFM) signal parameters is proposed. The NTFT is a linear transform and has a more simple form while compared to the conventional fractional Fourier transform (FRFT). The discrete NTFT with fast Fourier transform (FFT) algorithm offers a computationally disadvantage for LFM signal detection and parameters estimation. By utilizing NTFT with CLEAN technique, all the Multi-LFM signals components can be estimated seriatimly. Finally, computer simulations are provided to illustrate the good performances of the proposed algorithm.
Keywords :
fast Fourier transforms; parameter estimation; signal detection; CLEAN technique; conventional fractional Fourier transform; fast Fourier transform algorithm; linear transform; multi-LFM signal parameter estimation; multicomponent linear frequency modulated signal; new time-frequency transform algorithm; signal detection; Chirp modulation; Discrete Fourier transforms; Discrete transforms; Fast Fourier transforms; Fourier transforms; Frequency estimation; Frequency modulation; Parameter estimation; Signal detection; Time frequency analysis; CLEAN; FRFT; LCT; LFM; NTFT;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697083
