Title :
Multiplexer design for the BASS Rake acoustic transducer array
Author :
Morrison, Archie T., III
Author_Institution :
Dept. of Appl. Ocean Phys. & Eng., Woods Hole Oceanogr. Instn., MA, USA
Abstract :
The BASS Rake is an acoustic current meter designed to measure velocity profiles through the continental shelf wave bottom boundary layer. The instrument uses BASS electronics with a new transducer geometry to resolve the primary spatial and temporal flow scales of the wave boundary layer. The necessary characteristics of an interface satisfying the requirements of both the BASS transmit/receive circuit and the BASS Rake sensor design are extremely low through resistance, O(1 Ω), rapid switching, O(10 μs), flexible cross connection of the transducers, and strong isolation between channels, >40 dB. The layered multiplexer described is designed to meet these requirements
Keywords :
acoustic applications; acoustic transducer arrays; flowmeters; multiplexing equipment; oceanographic equipment; underwater sound; BASS Rake; acoustic current meter; acoustic transducer array; channel isolation; coast; continental shelf wave bottom boundary layer; dynamics; equipment; flexible cross connection; instrument electronics; low through resistance; measurement technique; multiplexer design; ocean current; rapid switching; sensor design; transmit receive electric circuit; velocity profile; Acoustic arrays; Acoustic measurements; Acoustic transducers; Acoustic waves; Current measurement; Geometry; Instruments; Multiplexing; Spatial resolution; Velocity measurement;
Conference_Titel :
OCEANS '95. MTS/IEEE. Challenges of Our Changing Global Environment. Conference Proceedings.
Conference_Location :
San Diego, CA
Print_ISBN :
0-933957-14-9
DOI :
10.1109/OCEANS.1995.528716
