提出了一种预报岸基微波超视距雷达最大探测距离的方法.实时采集岸海交界处的气象水文信息,利用P-J模型获取蒸发波导折射率剖面,用抛物方程模型计算电磁波传播损耗,通过修正后的雷达方程得出最大探测距离的预报值.基于上述方法设计并实现了岸基微波超视距雷达探测距离预报系统,对预报系统进行实验并与实际观测结果进行比较,表明:该预报系统的预报结果与雷达实际观测结果的偏差大部分小于40km,具有较高的预报精度. A method of forecasting the maximum detection distance of shore-based microwave over-the-horizon radar is proposed.Meteorological and hydrological information of the shore-sea junction is collected in real time, the refractive index profile of the evanescent waveguide is obtained by PJ model, and the electromagnetic wave propagation loss is calculated by the parabolic equation model. After the radar equation to obtain the maximum detection distance of the forecast value.Based on the above-mentioned method to design and implementation of the shore-based microwave OTHR radar detection range forecasting system, the forecasting system experiments and compared with the actual observation results show that: the forecasting system Most of the prediction results of the radar and the actual observation results of the radar are less than 40km, which has high forecasting accuracy.