Title :
Passive direction-of-arrival estimation under high noise and strong interference condition for volumetric array
Author :
Qian Ma ; Chao Sun ; XiongHou Liu ; LongFeng Xiang ; Zongwei Liu
Author_Institution :
Inst. of Acoust. Eng., Northwestern Polytech. Univ., Xi´an, China
Abstract :
To enhance the passive direction-of-arrival (DOA) estimation performance of a volumetric array in high noise and strong interference background, a new DOA estimation method based on Fourier integral method (FIM) and inverse beamforming (IBF) is proposed. This method combines the two methods and thus obtains the interference cancelling capability of IBF and the noise suppression ability of FIM simultaneously. Furthermore, the proposed method is generalized to be feasible for arbitrary volumetric array and also achieves the same robustness as the conventional beamforming (CBF). With theoretical analysis and computer simulations, it is shown that with the proposed method, the volumetric array can obtain better DOA estimation results in low signal-to-ratio (SNR) condition as well as in the presence of interferences, when compared to the conventional CBF method.
Keywords :
Fourier analysis; array signal processing; estimation theory; integral equations; interference (signal); interference suppression; DOA estimation performance; FIM; Fourier integral method; IBF; SNR condition; arbitrary volumetric array; interference cancelling; inverse beamforming; noise interference condition; noise suppression; passive direction-of-arrival estimation; signal-to-ratio; strong interference condition; volumetric array; Array signal processing; Arrays; Direction-of-arrival estimation; Estimation; Interference; Signal to noise ratio; Fourier integral method (FIM); Inverse beamforming (IBF); direction of arrival (DOA) estimation; underwater acoustics; volumetric array;
Conference_Titel :
TENCON 2013 - 2013 IEEE Region 10 Conference (31194)
Conference_Location :
Xi´an
Print_ISBN :
978-1-4799-2825-5
DOI :
10.1109/TENCON.2013.6718914