Paul C. Smith, Robert T. Adair, and David F. Peach

Abstract: This report presents the results of two weeks of bi–directional high frequency radio path soundings in a trans–auroral environment between Christchurch, New Zealand, and the U.S. station, McMurdo (Black Island), Antarctica, during mid–January, 1992. The work was commissioned by the Naval Undersea Warfare Center, New London, CT, for the National Science Foundation. This investigation demonstrated the value of ALE adaptive radio systems as a real–time frequency management tool. Based on the results observed, the authors recommended that NSF consider the acquisition of a 1–kW ALE radio system to be used, primarily as an oblique ionospheric channel sounder, with their existing communications system. This addition would provide significant improvement to the NSF frequency management capability.

Keywords: communications; radio; high frequency; ALE; automatic link establishment (ALE); adaptive radio; Antarctica; frequency management; high latitude

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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