Determining characteristics of HF communications links using SuperDARN

Details Determining characteristics of HF communications links using SuperDARN Determining characteristics of HF communications links using SuperDARN

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002angeo..20.1023h&link_type=abstract

Annales Geophysicae, vol. 20, Issue 7, pp.1023-1030

Physics

5

Scientific paper

Space weather effects can strongly influence high-frequency (HF) communications by changing the ionospheric environment through which the radio waves propagate. Since many systems utilize HF communications, the ability to make real-time assessments of propagation conditions is an important part of space weather monitoring systems. In this paper, we present new techniques for measuring high-latitude HF communications link parameters using data from SuperDARN radars. These techniques use ground-scatter returns to define the variation in skip distance with frequency. From these data, the maximum usable frequency (MUF) as a function of range is determined and ionospheric critical frequencies are estimated. These calculations are made in near-real-time and the results are made available on the World Wide Web. F-region critical frequencies calculated using this method show good agreement with ionosonde data.

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