Wideband Detection and classification of practice limpet mines against various backgrounds

PDF

Authors
  1. Fawcett, J.
  2. Fleming, R.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
In this experiment we placed actual practice limpet mines on a one-metre diameter disc which was suspended in the DRDC Atlantic acoustic calibration tank from a rotator pole. Two different discs were considered: one, aluminum and the other fibreglass. These discs were then rotated under a fixed multi-mode pipe projector (MMPP) and hydrophone. The geometry was arranged so that the mineshapes would appear directly under the projector/hydrophone during the rotation. The measurements were made at 2 different disc-projector offsets and for a slightly bistatic arrangement. Various different incident pulses were considered corresponding to different frequency bands. It is shown that the mineshapes are often easily discriminated from the surrounding disc response, in terms of both the echo travel time and the characteristics (temporal and spectral) of the echoes.

Il y a un résumé en français ici.

Report Number
DRDC-ATLANTIC-TM-2008-079 — Technical Memorandum
Date of publication
01 Jul 2008
Number of Pages
46
DSTKIM No
CA032767
CANDIS No
531973
Format(s):
Electronic Document(PDF)

Permanent link

Document 1 of 1

Date modified: