Title :
Programmable subsurface acoustic recording system
Author :
Villemarette, Glenn P.
Author_Institution :
US Naval Oceanogr. Office, Stennis Space Center, MS, USA
fDate :
31 Oct-2 Nov 1988
Abstract :
Upgrading of the US Naval Oceanographic Office´s electronic package for the moored acoustic vertical array (MAVA) buoy system is considered. The MAVA can simultaneously record the outputs of as many as 12 hydrophones for 32 hours. A low-power microprocessor-based design was chosen for versatility. The effective recording time is put to maximum use with the ability to program start and stop times on an event-by-event basis. Amplifier gains can be automatically selected based on maximum probable peak amplitudes using the automatic gain select function. The effective dynamic range of ambient-noise measurements is greatly increased using the prewhitening filter. Long deployment times are possible due to greatly reduced power consumption between events. Automatic testing, status reporting, and a user-friendly interface are also provided
Keywords :
acoustic arrays; data acquisition; data recording; geophysics computing; marine systems; microcomputer applications; oceanographic equipment; recorders; underwater sound; MAVA; US Naval Oceanographic Office´s; buoy system; data acquisition equipment; data recording; electronic package; hydrophone; low-power microprocessor-based design; moored acoustic vertical array; ocean; prewhitening filter; subsurface acoustic recording system; underwater sound; Acoustic arrays; Automatic testing; Batteries; Control systems; Dynamic range; Electronics packaging; Energy consumption; Filters; Frequency modulation; Frequency synchronization; Instruments; Microprocessors; Sea measurements; Sonar equipment;
Conference_Titel :
OCEANS '88. A Partnership of Marine Interests. Proceedings
Conference_Location :
Baltimore, MD
DOI :
10.1109/OCEANS.1988.23516
