Title :
A new beam-forming algorithm based on flank acoustic vector-sensor array sonar
Author :
Liang, Guolong ; Liu, Kai ; Lin, Wangsheng
Author_Institution :
Coll. of Underwater Acoust. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
An algorithm of Bartlett beam-forming with null-forming weights is proposed based on acoustic vector-sensor array, which is located on or near the flank shell of a ship. The influence of shell´s reflection to the spatial spectrum estimation is analyzed. The performance of this algorithm is examined in two simulation examples. It can suppress effectively one or several coherent noise sources from aft part of the ship. It gives high bearing resolution and results in left-right unambiguous DOA estimation in all directions. Furthermore, it won´t cause grating lobes if space under-sampling took place and, hence, is very useful in practical engineering.
Keywords :
direction-of-arrival estimation; sonar arrays; Bartlett beam-forming; beamforming algorithm; flank acoustic vector-sensor array sonar; high bearing resolution; left-right unambiguous DOA estimation; null-forming weights; Acoustic arrays; Acoustic noise; Acoustic reflection; Brain modeling; Direction of arrival estimation; Marine vehicles; Optical reflection; Sonar; Spatial resolution; Spectral analysis; Bartlett beam-forming; acoustic vector-sensor array; flank shell; null-forming weights;
Conference_Titel :
Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4856-2
Electronic_ISBN :
978-1-4244-5668-0
DOI :
10.1109/WCSP.2009.5371393
