A Towable, Moving-Coil Acoustic Target for Low Frequency Array Calibration

摘要

A towable, low frequency sound source that employs a moving-coil transducer is described. The unit, which consists of a surplus torpedo hull and a specially designed low frequency, broadband transducer, was designed and developed at NUSC's Ft. Lauderdale Detachment. Innovations over previous moving-coil units include design improvements for better heat dissipation, increased moving-coil copper density, more rugged construction, and a stiffer laminated stainless steel and epoxy piston dome. The complete unit is the largest of its kind and produces some pressure levels in the order of 180 dB/micro/Pa in the 10 to 1000 Hz frequency region. (Author)