High Frequency Surface Wave Radar Propagation Over Arctic Seas

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Authors
  1. Thomson, A.D.
  2. Quach, T.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
This report provides an assessment of the feasibility of operating High Frequency Surface Wave Radar (HFSWR) in the Arctic. This assessment is primarily based on comparisons between the results of theoretical propagation calculations performed for arctic conditions (e.g., in the presence of sea ice) and for sea-only conditions. All calculations were performed using a modified version of the TERPEM (TERrain Parabolic Equation Model) software package, which is based on parabolic equation methods. The modified TERPEM software has been tested extensively through comparisons with other models. As an example, this report shows a comparison between data generated with TERPEM and data published in the literature. Following this, propagation calculations are performed over various types of arctic terrain (e.g., cold low-salinity sea water, sea ice, snow on sea ice, broken sea ice, etc.). Finally, propagation calculations are performed for a specific path across Baffin Bay for which the transmitter is located at Cape Christian, Baffin Island, and for which the sea and ice conditions correspond to actual conditions estimated for 12 dates during the year 2001. The results show that the colder lower-salinity waters of the Arctic do not significantly decrease the propagation of HFSWR signals relative to what would occur over the sea off the east coast of Newfoundland. The presence of sea ice is found to create a trapped surface wave effect that improves propagation at shorter ranges and de

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Keywords
Basal snow;Broken ice;Trapped surface wave;TERPEM (TERrain Parabolic Equation Model);HFSWR (High Frequency Surface Wave Radar)
Report Number
DRDC-OTTAWA-TR-2004-002 — Technical Report
Date of publication
01 Jan 2004
Number of Pages
106
DSTKIM No
CA023753
CANDIS No
521136
Format(s):
Hardcopy;CD ROM

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