The APL-UW Multiport Acoustic Projector System
Abstract
The Applied Physics Laboratory of the University of Washington (APL-UW) has acquired on loan an experimental device known as the multiport transducer. APL-UW has developed, in turn, a complete transmitter system that integrated this transducer, capable of wideband operation (roughly 180-350 Hz) from near-surface depths to depths greater than 1000 m. The system's electrical components include an autotransformer tuner, a sea battery, and a fibre optic telemetry interface; mechanical components include a steel supporting structure and a pressure-compensated tuner housing; an additional acoustical component is a monitor hydrophone in a vibration isolation mount; and a signal component involves a lumped parameter SPICE circuit model approximation of the entire end-to-end system, an associated C++ application to predict the time-domain acoustic far field from a standard time-domain waveform input file, and a pre-equalization filter. The multiport system was a key element in a 2009 at-sea acoustics experiment located in the Philippine Sea and provided many hours of high-quality pulsed transmissions to a nearby vertical line array of hydrophones.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2009
- Accession Number
- ADA515330
Entities
People
- Rex K. Andrew
Organizations
- University of Washington