Short-Term Forecasting Method of Maximum Usable Frequency for HF Communication Based on Oblique Sounder

Abstract:

Based on oblique sounding system, a short-term forecasting method of maximum usable frequency for HF communication was presented. The method include four steps: firstly, maximum usable frequency of oblique sounding circuit was forecasted based on its sounding data; secondly, the critical frequency of sounding path midpoint was determined from the oblique sounding data and its forecast data by using ray-path theory; thirdly, the critical frequency was reconstructed for forecast circuit; in the end, maximum usable frequency for HF communication circuit was given. Using the oblique sounding data during March 2012, the accuracy and practicability of the method was validated. The root-mean-square error of the short-term forecast is 1.56 MHz, and is reduced 0.40MHz contrast to that of the long-term prediction. The research provides the important reference for frequency selection and frequency management of HF communication.

• Periodical: Applied Mechanics and Materials (Volumes 336-338)
• Pages: 1676-1681
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.336-338.1676
• Online since: July 2013
• Authors: Jin Hai Hou, Jian Wang, Li Qiang Wu, Sheng Yun Ji, Dan Jun Chen
• Keywords: Hf Communication, Maximum Usable Frequency, Oblique Sounding, Short-Term Forecast

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