The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Robust and accurate vehicle guidance and control are critically important for docking an underactuated Autonomous Underwater Vehicle (AUV) to a small and simple docking structure. In this work, only one high-power LED light is used for AUV visual guidance. Without the distance information, we estimate the relative heading, and control the AUV to track the docking station axis line with constant heading...
Classic PID algorithm is sensitive to the net buoyancy in the underactuated Autonomous Underwater Vehicle (AUV) control, and can be particularly problematic in the environment where the density of the water changes. S-surface control is based on the theory of fuzzy control and the structure of PD control, which shall be able to handle the above case well. It also simplifies the design of the controller...
A small-size autonomous underwater vehicle (AUV) for underwater environmental sampling is developed. Example applications include bottom mapping using a sidescan sonar, and thermocline tracking using the conductivity-temperature-depth sensor. The AUV has a modular mechanical, electronic and software design which allows for a simple integration of payload sensors selected for different applications...
Ocean acoustic tomography (OAT) can infer the state of the interior of the survey domain from measurements along the periphery. Traditionally, a network of mooring platforms with projector/hydrophone array is deployed, sometimes combined with moving vessel nodes. In this paper we look at the OAT problem with autonomous underwater vehicle (AUV) equipped with a hydrophone as a moving receiver and study...
It is often crucial in most of today's Autonomous Underwater Vehicles (AUVs) missions that the vehicle position be known precisely. Navigation performance of an Aided Inertial Navigation System (AINS) is always limited by the accuracy of sensors. In this paper we focus on enhancing performance of the AINS via micronavigation, which exploits a so-called Displaced Phase Center Antenna (DPCA) technique...
As Autonomous Underwater Vehicles (AUVs) play an increasingly important role in ocean community, localization of AUVs is attracting more and more attention in various applications. This paper presents a simple iterative solution to passive localization of an AUV which has a periodic sonar transmission. The method exploits the time difference of sonar transmissions and receiving interval measurements...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.