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Robotic underwater vehicle snaps first images of seafloor beneath Antarctica's Thwaites Glacier（图）
Robotic underwater vehicle snaps first images seafloor beneath Antarctica Thwaites Glacier
2020/2/20
During the first study of the ocean floor beneath Antarctica’s Thwaites Glacier, scientists took images of the glacier's foundations. Thwaites now accounts for about 4% of global sea level rise, and r...
Mid-Ocean Ridge Exploration with an Autonomous Underwater Vehicle
Autonomous Underwater Vehicle Ocean
2015/7/22
Human-occupied submersibles, towed vehicles, and tethered remotely operated vehicles (ROVs) have traditionally been used to study the deep seafloor. In recent years, however, autonomous underwater veh...
Autonomous Underwater Vehicle exploration of the Ocean cavity Beneath an Antarctic ice Shelf
Underwater Vehicle Ocean
2015/7/15
in recent years, mass loss from the Antarctic
ice Sheet has contributed nearly 0.5 mm yr–1
to global mean sea level rise, about one-sixth of
the current rate (church et al., 2011). Around
...
INTEGRATION OF A STRAPDOWN GRAVIMETER SYSTEM IN AN AUTONOMOUS UNDERWATER VEHICLE
Autonomous Underwater Vehicle moving vectorial gravimetry and gradiometry electrostatic accelerometer Unscented Kalman filtering
2015/4/23
We present a new mobile instrument for measuring dynamically the gravity vector and its gradients in underwater environment, named GRAVIMOB. Our instrument is a strapdown sensor, consisted of electros...
Unmanned underwater vehicle provides first 3-D images of underside of Antarctic sea ice（图）
Antarctic sea ice 3-D images
2014/12/1
A video news release and b-roll are available by contacting Dena Headlee, (703) 292-7739 / dheadlee@nsf.gov
A National Science Foundation (NSF)-funded research team has successfully tested an autonom...
Framed-Quadtree Path Planning for an Underwater Vehicle with the Task of Tracking a Moving Target
regular grid framed quadtree data structure algorithm efficiency
2011/9/9
An autonomous underwater vehicle (AUV) must use an algorithm to plan its path to distant, mobile offshore objects. Because of the uneven distribution of obstacles in the real world, the efficiency of ...
H∞ Robust Fault-Tolerant Controller Design for an Autonomous Underwater Vehicle’s Navigation Control System
AUV navigation control robust H∞ fault-tolerant control gain variations LMI
2011/9/9
In order to improve the security and reliability for autonomous underwater vehicle (AUV) navigation, an H∞ robust fault-tolerant controller was designed after analyzing variations in state-feedback ga...
Observation of Artificial Structures by Autonomous Underwater Vehicle
Artificial Structures Autonomous Underwater Vehicle
2009/4/30
There is a great demand for Autonomous Underwater Vehicles (AUVs) not only for wide area surveys but also for condition surveys of artificial underwater structures such as breakwater caissons, pillars...
High-latitude oceanography using the Autosub autonomous underwater vehicle
High-latitude oceanography autonomous underwater vehicle
2014/4/18
A combination of measurements from Autosub, an autonomous underwater vehicle, and ship-based
instruments are used to describe the oceanographic conditions beneath Fimbul Ice Shelf, Antarctica. The da...
Mapping the spatial variability of plankton metabolism using nitrate and oxygen sensors on an autonomous underwater vehicle
Mapping the spatial metabolism using nitrate
2014/4/18
It is now possible to make highly resolved vertical (,1 m) and horizontal (3 m at constant depth and ,400 m
when undulating from surface to 100 m) measurements of nitrate concentration in the upper o...
Optimal Path Planning of an Autonomous Underwater Vehicle in a Sea Current Field
Optimal Path Planning Autonomous Underwater Vehicle Sea Current Field
2009/4/1
Path planning of an autonomous underwater vehicle is one of the most important problems to reduce energy consumption and to navigate safely.Since there exists more or less sea current in most of under...
Elastic Pectoral Fin Actuators for Biomimetic Underwater Vehicle
Biomimetic Underwater Vehicle
2009/3/27
This paper describes the developments of new pectoral fins made of elastic materials with the functions of flexibility and multifunctionality for biomimetic underwater vehicles to use as not only a pr...
Simulating an underwater vehicle self-correcting guidance system with Simulink
Simulink self-correcting ahead angle arithmetic vehicle acoustic homing system modularization
2011/9/14
Underwater vehicles have already adopted self-correcting directional guidance algorithms based on multi-beam self-guidance systems, not waiting for research to determine the most effective algorithms....
High-latitude oceanography using the Autosub autonomous underwater vehicle
High-latitude oceanography Autosub autonomous underwater vehicle
2014/5/16
A combination of measurements from Autosub, an autonomous underwater vehicle, and ship-based instruments are used to describe the oceanographic conditions beneath Fimbul Ice Shelf, Antarctica. The dat...
Ice-ocean turbulent exchange in the Arctic summer measured by an autonomous underwater vehicle
Ice-ocean turbulent exchange Arctic summer measured autonomous underwater vehicle
2014/5/16
The first-ever observed horizontal profiles of summertime ice-ocean boundary layer fluxes were obtained using vertical water velocity, temperature, and salinity collected by an Autonomous Underwater V...