Expendable Hydrophone for Sonobuoy Application
NAVAL RESEARCH LAB ORLANDO FL UNDERWATER SOUND REFERENCE DIV
Pagination or Media Count:
A low-cost, low-noise, high-sensitivity hydrophone has been developed for possible application in an expendable, air-deployable, passive sonar array system. An acoustic element consisting of two Type III ceramic radially poled cylinders was combined with a low-noise, high-gain preamplifiver to produce a hydrophone with a sensitivity of -149 dB re 1 Vmicro Pa, operating frequency range of 10 Hz to 3kHz, and depth capability of 4550 m. In addition to a description of the hydrophone and its operating specifications, a discussion of design criteria and prototype selection is included.
- Acoustic Detection and Detectors