Abstract:

In view of the performance of numerical weather prediction (NWP) for electromagnetic wave propagation, comparisons are made between simulated and radiosonde atmospheric profiles, as well as path propagation loss based on inputs of the refractivity profiles from the numerical weather mode and radiosonde. For the refractivity gradients of the lowest 1 km from the surface, the mean error and the error standard deviation are 4.4 M/km and 16.6 M/km respectively. Propagation characteristics of typical microwave frequency points show the error of the predicted path propagation losses remains small at low frequency or short range, and it increases with an increase of frequency or range. The results show the applicability of NWP for electromagnetic wave propagation prediction in the marine environment.