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This paper describes the propagation and first reflection off a turbulent ocean and calm ocean from a point source on land. Considering MUF, P-M spectrum and seawater characteristics, we give the formula for calculating the dielectric constant, through this, we can easily get the relationship between different sea level. Compared with the calm sea surface specifically, the turbulent sea surface makes the reflection coefficient more sensitive to the change of grazing incidence angle, temperature and salinity. This will have an important role in the study of HF wave propagation on the surface of the sea and the communication of ships.

Research on HF Radio Reflections on the Sea Level Based on Mixed Model