Abstract
To provide highly precise position information for the navigation of an autonomous underwater vehicle (AUV) in a large area, we are developing a new underwater positioning system based on sensor networks. In this system, we set many standard stations on the sea surface and use a sound global positioning system (GPS). To lower the cost of nodes and simplify signal processing, we have proposed a new method based on sound propagation loss (SPL).This study describes a new information integration method to solve two problems: (1) the transmission path of the sound may be blocked by some obstacle; (2) the underwater nodes may get broken.
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