Study on Evaporation Duct Model A Considering Turbulence Based on Cosine Similarity

Based on the similarity theory in marine surface layer and one-dimensional Kolmogorov spectrum, The refractivity formula of Model A considering isotropic and anisotropic turbulence is given. Meantime, the vertical profile of the modified refractivity with turbulence could be given. Based on the Cosine Similarity, the difference between the calculated profile and the measured modified refractivity is analyzed using the experimental data collected. The results show that the calculated results of Model A would be influenced by atmospheric turbulence, and the calculated modified refractivity based on anisotropy atmospheric turbulence is closer to the measured modified refractivity. Moreover, when analyzing the degree of image similarity, more intuitive and reliable results could be given by Cosine Similarity.