Title :
Real-time positioning and navigation for ocean applications using GPS
Author :
Bock, Yehuda ; Chadwell, Dave ; Spiess, Fred
Author_Institution :
California Univ., San Diego, CA, USA
Abstract :
GPS technology is now pervasive for positioning and navigation at sea and for ship to shore positioning, but not so for precise applications. We review the use of GPS for precise (cm-level) real-time positioning and navigation (0.01 -0.05 degrees) for a variety of ocean applications and platforms. We focus on the precise realtime tracking of autonomous underwater vehicles (AUV´s) relative to the mother ship, using instantaneous GPS positioning first successfully applied to the high-rate tracking of earthquake-induced strong motions. This application is challenging since the AUV spends limited time at the surface before and after dives, and since there is usually no real-time access to data from a fixed base station. We then investigate the use of a triad of GPS receivers on the mother ship to compute its attitude and heading using the instantaneous positioning method, and compare the accuracy achievable to existing methodologies.
Keywords :
Global Positioning System; earthquakes; navigation; ocean waves; oceanographic techniques; ships; underwater vehicles; AUV; GPS receiver; autonomous underwater vehicle; earthquake-induced strong motion; instantaneous GPS positioning; navigation; precise realtime tracking; realtime shore positioning; ship; Base stations; Global Positioning System; Marine technology; Marine vehicles; Navigation; Oceans; Sea surface; Underwater tracking; Underwater vehicles;
Conference_Titel :
OCEANS 2003. Proceedings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-933957-30-0
DOI :
10.1109/OCEANS.2003.178409