Title :
Broad-band matched-field source localization in the east China Sea
Author :
Zhang, Renhe ; Li, Zhenglin ; Yan, Jin ; Peng, Zhaohui ; Li, Fenghua
Author_Institution :
Nat. Lab. of Acoust., Chinese Acad. of Sci., Beijing, China
Abstract :
An incoherent broad-band frequency (100-200 Hz) domain Bartlett processor is applied to the wide-band source (WBS) signals for source localization. The coupled normal mode-parabolic equation theory based on the WKBZ approximation is used to calculate the replica fields in the sloping bottom environment. The experimental analysis shows that the accuracy of the source localization is largely improved with the consideration of the slope of bottom. The range estimates of the majority of signals by localized by matched-field processing in the range from 30.0 to 50.0 km are consistent with the global positioning system measured ranges.
Keywords :
acoustic signal processing; direction-of-arrival estimation; geophysical signal processing; oceanographic regions; oceanographic techniques; parabolic equations; underwater sound; 100 to 200 Hz; 30 to 50 km; East China Sea; WKBZ approximation; broad-band matched-field source localization; coupled normal mode-parabolic equation theory; incoherent broad-band frequency domain Bartlett processor; matched-field processing; replica field; shallow-water environment; sloping bottom environment; wide-band source signals; Acoustic reflection; Data mining; Frequency; Information retrieval; Parameter extraction; Phase estimation; Reverberation; Sediments; Underwater acoustics; Water resources;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2004.835788
