Accession Number:

ADA634497

Title:

Seismic Sonar Technology

Descriptive Note:

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF PHYSICS

Personal Author(s):

Report Date:

1997-09-30

Pagination or Media Count:

4.0

Abstract:

LONG-TERM GOAL. Develop the basic concepts of an active, seismic sonar for the detection of mines andor unexploded ordnance buried in the surf and near-surf zone. OBJECTIVE. Test the hypothesis that seismic interface waves can be discretely excited and can be reflected off buried objects, producing detectable echoes. APPROACH. Develop electromechanical transducers having two, controllable, degrees of vibrational freedom that can discretely excite seismic interface waves. These are vector waves that require both a horizontal and vertical component in order to be excited. Test and evaluate these transducers at the Navy beach on Monterey Bay and elsewhere, after ground truth and noise measurements are made. Develop a rudimentary seismic sonar apparatus for echo ranging tests.

Subject Categories:

  • Acoustic Detection and Detectors
  • Seismic Detection and Detectors
  • Underwater Ordnance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE