Title :
Simultaneous operation of the Sea Beam multibeam echo-sounder and the SeaMARC II bathymetric sidescan sonar system
Author :
De Moustier, Christian ; Lonsdale, Peter F. ; Shor, Alexander N.
Author_Institution :
Scripps Inst. of Oceanogr., La Jolla, CA, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
An experiment aboard the Scripps Institution of Oceanography´s RV Thomas Washington has demonstrated the seafloor mapping advantages to be derived from combining the high-resolution bathymetry of a multibeam echo-sounder with the sidescan acoustic imaging plus wide-swath bathymetry of a shallow-towed bathymetric sidescan sonar. To a void acoustic interference between the ship´s 12-kHz Sea Beam multibeam echo-sounder and the 11-12-kHz SeaMARC II bathymetric sidescan sonar system during simultaneous operations, Sea Beam transmit cycles were scheduled around SeaMARC II timing events with a sound source synchronization unit originally developed for concurrent single-channel seismic, Sea Beam, and 3.5-kHz profile operations. The scheduling algorithm implemented for Sea Beam plus SeaMARC II operations is discussed, and the initial results showing their combined seafloor mapping capabilities are presented
Keywords :
acoustic imaging; bathymetry; echo; oceanographic techniques; sonar; underwater sound; 11 to 12 kHz; 12 kHz; RV Thomas Washington; Scripps Institution of Oceanography; Sea Beam multibeam echo-sounder; Sea Beam transmit cycles; SeaMARC II bathymetric sidescan sonar system; SeaMARC II timing events; VLF; high-resolution bathymetry; oceanographic techniques; seafloor mapping capabilities; sidescan acoustic imaging; simultaneous operations; sound source synchronization unit; wide-swath bathymetry; Acoustic beams; Acoustic imaging; Control systems; Geophysics; Image resolution; Oceanographic techniques; Scheduling algorithm; Sea floor; Sonar measurements; Timing;
Journal_Title :
Oceanic Engineering, IEEE Journal of
