Abstract
An Underwater acoustic channel is characterized as time-varying, multipath environment. Underwater localization is a key element in most underwater communication applications. Compared with the absolute positioning systems, the relative positioning systems don't need an external infrastructure. In order to get a better location result, we firstly analysised the environment in the water tank and modeled it in this paper. we describe a modified Short Baseline (SBL) relative localization system, in which a scheme of multi-channel data acquisition based on LabVIEW, the Generalized Cross Correlation (GCC) algorithm, and the hyperbolic positioning algorithm are used. Simulation results show that the modified relative localization system that we proposed can adapt to the underwater harsh environment better, and also can reduce the position statistical error of underwater target significantly.
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