underwater acoustic wireless sensor network (uawsn) use acoustic signalsto transmit data. acoustic signals in underwater environment have high bit errorrate, long propagation delay and limited bandwidth. another constraint in uwasnis energy. due to these constraints, design of energy and bandwidth efficient andpropagation delay aware mac protocol is a great challenge in uwasn.underwater sensor ...

It is an auspicious time for this first-ever ISRR special session on the topic of underwater robotics. Underwater robots are now performing high-resolution acoustic, optical, and physical oceanographic surveys in the deep ocean that previously were considered impractical or infeasible. For example: in 2001 the Argo II underwater robotic vehicle, [1], was employed to discover the first off-axis ...

Underwater noise caused by impulse pile-driving during the installation of offshore foundations is potentially harmful to marine life, especially marine mammals. In Germany the regulation authority (BSH) set following limit values: (i) Sound Exposure Level (SEL) = 160 dB (re 1 μ Pa 2 s) and (ii) Peak Level (LPeak) = 190 dB (re 1 μ Pa) which must be complied with at a distance of 750 m to the co...

Currently, research is underway at the Florida Institute of Technology (Florida Tech), to investigate the environmental impacts of oil development in the Prudhoe Bay region of the Beaufort Sea, along Alaska’s northern coast. Of particular interest are the impacts of construction of offshore gravel islands used for oil drilling and production. Construction of these islands may contribute to an i...

Behavior of blast wave in underwater explosion is of interest to metal forming community and ship designers. Underwater detonation is, also a potential hazard to the water intakes or a plant spent fuel pool. In this paper, some techniques for calculating free-field blast parameters such as pressure and impulse in underwater explosion and prediction of bubble pulsation parameters are presented a...

When underwater vehicles perform navigation close to the ocean floor, computer vision techniques can be applied to obtain quite accurate motion estimates. The most crucial step in the vision-based estimation of the vehicle motion consists on detecting matchings between image pairs. Here we propose the extensive use of texture analysis as a tool to ameliorate the correspondence problem in underw...

Measuring the ever-changing 3-dimensional (3D) motions of the ocean requires simultaneous sampling at multiple locations. In particular, sampling the complex, nonlinear dynamics associated with submesoscales (<1-10 km) requires new technologies and approaches. Here we introduce the Mini-Autonomous Underwater Explorer (M-AUE), deployed as a swarm of 16 independent vehicles whose 3D trajectories ...

The use of teams of Autonomous Underwater Vehicles for visual inspection tasks is a promising robotic field. The images captured by different robots can also be used to aid in the localization/navigation of the fleet. In previous works, we have proposed a distributed localization system based on the Augmented States Kalman Filter through the visual maps obtained by the fleet. In this context, t...

Skilled mechanical arms of consanguine relationship formed by joints the relative motion of the adjacent interfaces enable, have been connected. Ability to perform a variety of pre-programmed robotic manipulator in various industries. Skilled mechanical arms in recent years as a significant progress has been completed. House repair and easier to work with them as well and fit and optimal relati...