Accession Number:

ADA071444

Title:

Hydrophone Phase Stability Analysis at Frequencies Below 100 Hz.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Tims,A. C.
• Henriquez,T. A.

Report Date:

1979-07-09

Pagination or Media Count:

24.0

Abstract:

The design criterion for a standard reference hydrophone for accurate phase measurements independent of temperature and hydrostatic pressure is examined. Geometrical, acoustical, and electrical considerations that determine the electroacoustic phase response of a hydrophone are analyzed to optimize phase stability within specific frequency ranges. Limitations due to pyroelectric effect and low-frequency piezoelectric response are analyzed and specific examples given. Author

Descriptors:

• *HYDROPHONES
• PREAMPLIFIERS
• THERMAL STABILITY
• PHASE STUDIES
• LEAD TITANATES
• PRESSURE
• PIEZOELECTRIC EFFECT
• ZIRCONATES
• CIRCUIT ANALYSIS
• LOADING(ELECTRONICS)
• LOW FREQUENCIES

Subject Categories:

• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE