CORRELATION ANALYSIS OF PROPAGATION IN A STOCHASTIC CHANNEL

Authors
  1. Dunham-Wilkie, M.
  2. Zala, C.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN);Barrodale Computing Services Ltd, Victoria BC (CAN)
Abstract
The purpose of this contract was to investigate, by simulation, the effect of random environmental perturbations on signal coherence. The simulation was conducted using the environmental conditions described in Section 2. In the first part of the experiments, this environment was used to generate the acoustic field at 2000 thirty-element vertical arrays spaced one kilometre apart in range. Next, the top 1000 metres of the environment was divided into a two dimensional array of twenty-metre-deep by 1 kilometre-long cells. The environment was then perturbed by adding independent gaussian deviates to the sound speeds and densities in each cell (the distribution parameters are defined in Section 3.2) and this perturbed environment was used to compute a second acoustic field. The correlation between the fields computed from the unperturbed and the perturbed environments, averaged over receiver depth, was then computed and plotted as a function of range.
Report Number
DREP-CRS-91-01 — Contractors Report Series
Date of publication
15 Feb 1991
Number of Pages
26
DSTKIM No
91-01471
CANDIS No
68678
Format(s):
Hardcopy;Originator's fiche received by DSIS

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