Two Geophone Underwater Acoustic Intensity Probe
Abstract
Acoustic intensity is measured by a submerged probe consisting of two passive geophones mounted in spaced relationship with their sensing axes aligned. The geophones are connected through a cable to a remote spectrum analyzer in which acoustic intensity is computed from the velocity gradient between the two geophones. The exclusive use of geophones, which inherently have low impedance outputs, eliminates the need for preamplification in the probe. The geophones are mounted inside an acoustically transparent, thin rubber shell, which reduces the effects of noise due to flow.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 09, 2001
- Accession Number
- ADD019850
Entities
People
- Gerald C. Lauchle
- James A. Mcconnell
- Thomas B. Gabrielson
Organizations
- Naval Air Warfare Center