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In order to get reliable communication no matter under the water or above the surface, a kind of multi channel and distributed wireless communication network architecture for UUVs was presented. This network architecture includes underwater communication, surface communication and internal communication. Underwater communication is acoustic modem, and the surface communication consists of RF, Wi-Fi,...
Missions involving multiple Autonomous Underwater Vehicles (AUVs) are gaining increasing popularity with the advent of better control mechanisms and availability of acoustic modems that allow for cooperative networked tasks to be carried out by Unmanned Underwater Vehicles (UUVs). However, high costs associated with offshore testing and the lack of useful tools to accurately simulate multi-AUV tasks...
Unmanned underwater vehicles have various missions within civilian, military and academic sectors. They have the ability to explore areas unavailable to manned assets and to perform duties that are risky to humans. In particular, UUVs have the ability to perform bearings-only tracking in shallow areas near shorelines. This article compares a Logarithmic Polar Coordinates EKF (LPC-EKF) and Logarithmic...
A small, low cost, expendable UUV, equipped with a broadband acoustic source, has been developed for in-situ transmission loss (TL) and other acoustic measurements. The mobile acoustic source vehicle, developed by OASIS (OMAS), is 12.4 cm in diameter, 91.4 cm long and weighs 10 kg. OMAS can be programmed to follow different run geometries by varying course, depth, and speed while transmitting various...
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