2018年美赛A题O奖
The traditional communication methods of high frequency (HF) radio are still widely used worldwide,
which has longer propagation distance than other kinds of radio communication systems, and can cover
mountainous, deserts and oceans. At present, the studyof high frequency radio multi-hop propagation mode
has been relatively systematic, which provide various methods to simulate its trajectory and attenuation in
the air, ionosphere and earth surface. In this paper, we mainly focus on the reflection properties on the ocean
surface, including calm and turbulent conditions. What’s more, the overall propagation process and practical
application of HF radio are also involved.
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