Title :
DOA estimation of multi-component LFM signals based on the FRFT
Author :
Luo, Xiaoxiang ; Qu, Haitao ; Yu, Junsheng ; Liu, Shaohua
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
A novel algorithm for the direction of arrival (DOA) estimation based on the fractional Fourier transform (FRFT) is proposed. Multi-component LFM signals are filtered and demodulated into a number of stationary single frequency signals. Then the direction estimation of LFM signals can be achieved by combining with the traditional MUSIC method in the fractional Fourier (FRF) domain. The statistical analysis is also performed which perfects the method theoretically, simulation results are provided to show the validity of our method.
Keywords :
Fourier transforms; demodulation; direction-of-arrival estimation; frequency modulation; statistical analysis; DOA estimation; FRFT; direction of arrival estimation; fractional Fourier transform; linear frequency modulated signals; multicomponent LFM signal demodulation; multicomponent LFM signal filtering; signal direction estimation; statistical analysis; Additive white noise; Direction of arrival estimation; Fourier transforms; Frequency estimation; Multiple signal classification; Radar signal processing; Signal processing; Signal processing algorithms; Statistical analysis; Time frequency analysis;
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.2008.4697089
