Title :
Can wave direction be measured from an AUV?
Author :
Brumley, B. ; Strong, Brandon
Author_Institution :
RD Instruments, San Diego, CA, USA
Abstract :
AUVs on survey missions in coastal environments provide platforms of opportunity for making directional wave observations. However, there are several complications that arise when wave observations are made from a moving platform. One of these is a Doppler shift in the dispersion relation, which causes correctable distortion in the observed directional wave spectrum. A modified triplet algorithm is described that corrects for platform motion by subtracting bottom-track velocity. The Doppler distortion effect and the algorithm are illustrated using data taken using an ADCP on a moving platform.
Keywords :
Doppler shift; ocean waves; oceanographic equipment; oceanographic techniques; underwater vehicles; ADCP; AUV direction measurement; Autonomous Underwater Vehicle; Doppler distortion effect; Doppler shift; bottom-track velocity; coastal environments; directional wave observations; directional wave spectrum; survey missions; triplet algorithm; Acceleration; Business; Current measurement; Dispersion; Doppler shift; Extraterrestrial measurements; Instruments; Oceans; Sea measurements; Underwater vehicles;
Conference_Titel :
Current Measurement Technology, 2003. Proceedings of the IEEE/OES Seventh Working Conference on
Print_ISBN :
0-7803-7813-X
DOI :
10.1109/CCM.2003.1194301
