Investigation of Calibration Discrepancies of Tile-Type Hydrophone.
NAVY UNDERWATER SOUND LAB NEW LONDON CT
Pagination or Media Count:
Wide discrepancies were noted between the acoustic calibrations made at Dodge Pond of an experimental USL tile-type hydrophone and those made by an outside vendor. This memorandum describes the results of initial studies undertaken to determine the reasons for these discrepancies. The measurements made on the array clearly show the sensitivity to be dependent on some unidentified factor, as perhaps water temperature, pressure, or microbubbles. Tests are scheduled at the Underwater Sound Reference Division of NRL, where the effects of water temperature and pressure will be investigated further. Further tests at Dodge Pond will examine possible effects of bubble adherence.
- Acoustic Detection and Detectors