Multiscale Decomposition Prediction of Propagation Loss for EM Waves in Marine Evaporation Duct Using Deep Learning

The tropospheric duct is an anomalous atmospheric refraction structure in marine environment. Since the propagation loss can reflect the propagation characteristics of EM waves inside the duct layer. A novel multiscale decomposition prediction method (VMD-PSO-LSTM) is proposed in this study. The performance of the VMD-PSO-LSTM method is verified by combining the measured propagation loss. The minimum RMSE and MAE indicators for the VMD-PSO-PSTM method are 0.517 and 0.406, respectively, showing that the VMD-PSO-LSTM method has the advantages of high accuracy and outperforms other comparison methods.