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

fYear

2008

Firstpage

296

Lastpage

298

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICOSP.2008.4697129

Filename

4697129