Title :
Broadband beamforming of LFM signal based on fractional Fourier Transform
Author :
Wu Hai-zhou ; Ran, Tao
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing
Abstract :
We proposed a new broadband beamforming method of linear frequency modulation (LFM) signal based on fractional Fourier transform (FRFT). The broadband signal received on the array sensors is partitioned to some sub-band by the FRFT, and then beamforming of each sub-band is adapted by the rule of Linearly Constrained Minimum Variance. The conventional broadband beamforming in frequency domain is a special case of the proposed method. The simulations verified that the new method was better than the conventional method in frequency domain.
Keywords :
Fourier transforms; array signal processing; array sensors; array signal processing; broadband beamforming; fractional Fourier transform; linear frequency modulation signal; linearly constrained minimum variance; Adaptive arrays; Array signal processing; Fourier transforms; Frequency domain analysis; Interference cancellation; Noise cancellation; Sensor arrays; Signal processing; Signal processing algorithms; Signal to noise ratio; FRFT; array signal process; broadband beamforming;
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.2008.4697129
