Title :
The autonomous profiling vehicle (APV)
Author_Institution :
Ocean Sensors Inc., San Diego, CA, USA
Abstract :
The APV is an autonomous vertical profiling free fall instrument composed of: a sensor suite, a data transmission (via radio frequency) system, and a location system (GPS), a buoyancy engine and pressure housing. Conductivity and temperature versus depth data has been collected from the surface to 1000 meters. A minimum of 50 profiles to 1000 meters can be made. In addition to CTD data, calculations are made of vertical fluid velocities based an the differences in the instrument´s absolute terminal velocity related to the drag forces, and the measured absolute fall rate dp/dt. The instrument ascent/descent rates are adjustable to provide multi-depth drifter records
Keywords :
electrical conductivity measurement; oceanographic equipment; oceanographic techniques; temperature measurement; APV; CTD; GPS; autonomous profiling vehicle; buoyancy engine; data transmission; electrical conductivity; equipment; free fall instrument; location system; measurement technique; ocean; pressure housing; radio frequency; salinty; sea; sensor suite; temperature; thermohaline structure; vertical fluid velocities; vertical profiling; Conductivity; Data communication; Engines; Global Positioning System; Instruments; Mobile robots; Radio frequency; Remotely operated vehicles; Sensor systems; Temperature sensors;
Conference_Titel :
OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings
Conference_Location :
Brest
Print_ISBN :
0-7803-2056-5
DOI :
10.1109/OCEANS.1994.363827
