蒸发波导环境下海上超视距通信应用研究

Research on maritime transhorizon communication application based on evaporation duct

提出不同条件下蒸发波导预测方法:基于水文气象条件的海上舰艇蒸发波导预测模型选择方法和基于GPS信号利用贝叶斯正则化BP神经网络反演蒸发波导的方法;结合舰艇微波频段通信模式及电磁波在蒸发波导环境下的传输损耗,研究蒸发波导环境下海上超视距通信,定量估算出最大有效通信距离,仿真结果表明蒸发波导环境下微波频段通信可达视距范围之外;研究超视距通信电磁盲区分布特征及影响因素;建立蒸发波导环境下舰艇超视距通信模型及应用流程。结合实际海上通信需求,提出蒸发波导环境下舰艇海上超视距通信应用。

There are two methods for predicting evaporation duct： they are the method of choosing evaporation duct prediction model based on hydrometeor logic conditions and inversion for evaporation duct using GPS signals based on improved BP neural network. Combined with ship-borne microwave communication modes and the loss of electromagnetic transmission under evaporation duct, conducting the research on maritime transhorizon communication under evaporation duet, get the maximum effective communication distance under quantitative estimation. The simulation results show that mi- crowave communications under evaporation duct can reach the zone out of visibility range; studied the distribution features and influence factors of electromagnetic blind zone within tranhorizon transmissions. This paper builds the ship-borne com- munication model and application process. Combined with the actual maritime communications needs, proposes the application of maritime transhorizon communication under evaporation duct.