Aware of the new trends in Surveillance Operations, THALES Underwater Systems has been developing AUV based sonar systems since the late 1990’s. At present, THALES and ECA are developing an AUV system, within the frame of the French Poles of Competitiveness (Pôle Mer Bretagne). This project is called ASEMAR, for “Auv de SEcurité MARitime”. In this development, THALES and ECA work together in a ...

Introduction:Anterior urethral valve (AUV) is a rare congenital anomaly that can cause obstructive uropathy. AUV can lead to variable urinary tract symptoms, and if left untreated, it can result in end-stage renal disease. AUV should be immediately evaluated and managed. Herein, we present a neonate with AUV and diverticulum, who was treated by cystoscopy. Case report:A 11-day-old boy was ref...

Transferring data between the ocean surface and an operating Autonomous Underwater Vehicle (AUV) is a difficult and slow process. Current methods of un-tethered submersible communication have either a very limited data transfer rate or a prohibitively short range. In this paper, students of the University of Florida propose a new data transfer method that will supply the high data rates of a te...

Autonomous underwater vehicles (AUV) are used in many applications like mining, aquaculture and military applications. AUV is highly nonlinear system; modeling and controller performance is challenging issue for the researchers. In this paper a linear quadratic regulator (LQR) and proportional integral derivative (PID) controllers are designed for the depth control system of AUV. These controll...

In this paper, we propose a data-gathering scheme for hierarchical underwater sensor networks, where multiple Autonomous Underwater Vehicles (AUVs) are deployed over large-scale coverage areas. The deployed AUVs constitute an intermittently connected multihop network through inter-AUV synchronization (in this paper, synchronization means an interconnection between nodes for communication) for f...

Autonomous Underwater Vehicle (AUV) response robots are special multipurpose devices, capable of moving and performing various tasks in water, autonomously, or with human teleoperation. Capability assessment of such devices is hard and complex work. This paper describes our work in AUV Response Robot testing from two aspects: First, additional testing methods are proposed for AUV capability ass...

In the AUV binocular vision navigation, in order to improve the AUV positioning accuracy, optimizing the stereo vision imaging system structure and weighted least-square method is proposed. The principle of AUV location is analyzed, and that the AUV location accuracy depends on the measurement precision of the three dimensional space point is proposed. Based on the analysis of stereo vision mea...

Abstarct In this paper, a new approach to optimize an Autonomous Underwater Vehicle (AUV) hull geometry is presented. Using this methode, the nose and tail of an underwater vehicle are designed, such that their length constraints due to the arrangement of different components in the AUV body are properly addressed. In the current study, an optimal design for the body profile of a torpedo-shaped...