Underwater Acoustic Network as a Deployable Positioning System
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Authors
King, Rebecca E.
Subjects
Seaweb
sensor network
acoustic communication
ranging
localization
navigation
acoustic modem
sensor network
acoustic communication
ranging
localization
navigation
acoustic modem
Advisors
Rice, Joseph A.
Date of Issue
2012-06
Date
12-Jun
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
Underwater acoustic communications networks serve to pass data between submerged nodes and a command and control center ashore. Range data recorded incident to regular transmissions between nodes afford the acoustic network an additional use as a navigational aide or tracking system for a vehicle operating in the network domain. Previous studies developed algorithms to solve for the position of the mobile node using node-to-node range data. An alternative localization algorithm is proposed. This study implements the algorithms for experimentation in simulation and an actual maritime environment. Reference nodes are deployed to establish a Seaweb network in Del Monte Lake on the Naval Postgraduate School campus. Experimental range data are recorded and used to plot the path of a surface vehicle towing a network sensor node. GPS fixes are simultaneously recorded for comparison of the calculated track to the true track. This comparison throughout the experiment provides a more definitive measure of the localization algorithms performance than was possible in previous studies.
Type
Thesis
Description
Series/Report No
Department
Applied Physics