A Comparison of Measured Time Series Arrivals with Predictions from the Becky and WATTCH Models

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Authors
  1. Pecknold, S.P.
  2. Ellis, D.D.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
The results of an experiment from DRDC Atlantic sea trial Q283 (the Broadband Adaptive Sonar Experiment 2004) are described. In this experiment, a measurement of the direct arrival strength of a ping from the Vertical Projector 2 (VP2) with the DASM (Directional Acoustic Sensor Module) array was conducted. The purpose of this measurement was to observe any changes in the signal envelope of waveforms transmitted from the VP2. The measurements of the direct path arrival and other arrivals were compared to model predictions for waveform arrival amplitude and times from two models: the WATTCH (WAveform Transmission Through a CHannel) program (used in conjunction with the Generic Sonar Model), and the Becky model. Bottom parameters and source-projector separation were then re-estimated based on the differences between model and data.

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Keywords
Times series analysis;WATTCH (WAveform Transmission Through a CHannel);DASM (Directional Acoustic Sensor Module)
Report Number
DRDC-ATLANTIC-TM-2004-250 — Technical Memorandum
Date of publication
01 Nov 2005
Number of Pages
34
DSTKIM No
CA027245
CANDIS No
525290
Format(s):
CD ROM

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