Analysis of Glisten15 transmission loss data

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Authors
  1. Coffin, M.
  2. Collison, N.
  3. Dunphy, K.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN)
Abstract
This contract report documents GeoSpectrum’s analysis of transmission loss (TL) data from the Glider Sensors and Payloads for Tactical Characterization of the Environment 2015 (GLISTEN15) sea trial led by the NATO Centre for Maritime Research and Experimentation (CMRE). This work focused on analysis of acoustic vertical line array (VLA) recordings of continuous waveform (CW) and linear frequency modulated (LFM) pulses. Analysts compiled all known acoustic and non-acoustic information pertaining to the TL measurements and processed the CW and LFM data to generate calibrated receive levels. Based on their basic quality assurance analysis, GeoSpectrum analysts believe that the CW data are acceptable for future in-depth analysis, but that the LFM data have issues with unknown/changing source level. Analysts also noted that VLA sensors do not have the same acoustic sensitivity. Mean noise estimates were computed for the LFM-processed data and used to estimate corrections for suspect VLA sensors.
Keywords
transmission loss;acoustics;STAR;GLISTEN15
Report Number
DRDC-RDDC-2017-C237 — Contract Report
Date of publication
01 Oct 2017
Number of Pages
73
DSTKIM No
CA045412
CANDIS No
805818
Format(s):
Electronic Document(PDF)

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