Title :
Vector Field Smoothing for DOA Estimation of Coherent Underwater Acoustic Signals in Presence of a Reflecting Boundary
Author :
Tao, Jianwu ; Chang, Wenxiu ; Cui, Wei
Author_Institution :
Aviation Univ., Jilin
Abstract :
A new vector field smoothing algorithm for direction-of-arrival (DOA) estimation of multiple coherent, underwater acoustic signals is proposed based on the array with vector hydrophones, which is located at or near a reflecting boundary. The performance of the proposed algorithm is examined in two practical applications: hull-mounted and seabed array. The advantage of the vector field smoothing scheme is no reduction in the overall array´s spatial aperture.
Keywords :
acoustic signal processing; acoustic wave reflection; array signal processing; direction-of-arrival estimation; underwater acoustic propagation; DOA estimation; coherent underwater acoustic signals; direction-of-arrival estimation; reflecting boundary; vector field smoothing; vector hydrophones; Acoustic arrays; Acoustic signal processing; Apertures; Direction of arrival estimation; Electromagnetic wave polarization; Phased arrays; Signal processing algorithms; Smoothing methods; Sonar equipment; Underwater acoustics; Acoustic interferometry; acoustic signal processing; acoustic velocity measurement; array signal processing; direction of arrival estimation; phased arrays; sonar arrays; sonar signal processing; underwater acoustic arrays;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2007.900963
