A SIMPLE MODEL FOR THE PREDICTION OF PHASE SWINGS OBSERVED IN ACOUSTIC PROPAGATION DATA

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Authors
  1. Maranda, B.H.
  2. Ebbeson, G.R.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
In 1986, a propagation loss experiment was conducted in which a narrowband source moved away from two widely separated hydrophones located in shallow water. It was found that the relative phase between the signals received at the two hydrophones underwent rapid swings near the nulls of the pressure field. In the paper, a simple two-mode propagation model is derived that explains the source of these phase swings. In order to produce phase swings as large as those observed in the experimental data, it was necessary to introduce different bathymetries along the propagation paths to the two hydrophones.
Keywords
Modal interference
Report Number
DREP-TM-94-117 — Technical Memorandum
Date of publication
01 Jul 1994
Number of Pages
22
DSTKIM No
94-06122
CANDIS No
146069
Format(s):
Hardcopy;Document Image stored on Optical Disk

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