The paper presents algorithm of underwater vehicle’s dynamics modeling using technique of artificial neural networks. Paper includes mathematical description of used dynamical neurons and basis of its learning process. Next the results of research for real underwater vehicle were presented. Key-Words: artificial neural networks, dynamics modeling, underwater vehicles

Underwater sensor networks (UWSN) resemble terrestrial sensor networks in many aspects. However, the high propagation delay and limited bandwidth make terrestrial sensor network’s protocols unsuitable for UWSN. Underwater sensor node are powered by batteries which are even difficult to recharge. So, energy efficiency is major concern for underwater routing. In this paper ,based on VBF, we provi...

This paper discusses the use of distributed autonomous underwater vehicles (AUVs) for multistatic processing and tracking of underwater target. A localized processing chain is implemented on each AUV to generate the contact report of an underwater target that is transmitted to a command center via underwater acoustic communications (UWA). The contact reports from several AUVs are combined toget...

[Purpose] This study's working hypothesis is that underwater walking training is beneficial for healthy subjects balance. [Subjects and Methods] Forty eight subjects (Underwater walking group=25, Overground walking group=23) completed the experiment. Healthy subjects with no orthopedic history of lower extremity injuries were recruited. Gait training is performed using the underwater treadmill ...

Underwater sensor network consists of number of various sensors and autonomous underwater vehicles deployed underwater to coordinate, interact and share information among them to carry out sensing and monitoring functions. Underwater environment differs from terrestrial radio environment both in terms of energy costs and channel propagation phenomena. The goal of the project is to reduce the oc...

In this paper, we present two Human-Robot interfaces for underwater robot teleoperation. This work is in the context of the Digital Ocean Europe project 1 that aims at digitalizing seafloor sites in 3D imagery using underwater robots (ROVs), and uses this information in order to edit interactive, virtually animated environments that are diffused online. The work presented in this paper concerns...

[Purpose] Our working hypothesis is that underwater treadmill training improves normal people's gait ability. [Subjects and Methods] Twenty-five healthy subjects with no orthopedic history of lower extremity were recruited. Gait training is performed using an underwater treadmill (HydroTrack® Underwater Treadmill System, Conray, Inc., Phoenix, AZ, USA), for twenty minutes per session, five sess...

A fuzzy logic for autonomous navigation of underwater robot is proposed in this paper. The VFF(Virtual Force Field) algorithm, which is widely used in the field of mobile robot, is modified for application to the autonomous navigation of underwater robot. This Modified Virtual Force Field(MVFF) algorithm using the fuzzy logic can be used in either track keeping or obstacle avoidance. Fuzzy logi...

Despite being a fundamental networking primitive, data broadcasting has so far received little attention in the context of underwater networks. This paper proposes an adaptive push system for data broadcasting in underwater acoustic wireless networks with locality of client demands. The proposed system exploits the characteristic relationship between the bandwidth of an underwater acoustic link...