复杂电磁环境预测系统设计与实现

Design and implementation of prediction system for complex electromagnetic environment

针对雷达、北斗卫星导航等依赖电磁波的系统都避免不了对电磁波传播特性的分析问题,提出了基于统计模型的电磁环境预测方法,以及基于抛物方程的预测方法,并推导出抛物方程计算总的传播损耗等于传播因子和损耗因子对电磁波场量的叠加,设计了电磁环境预测系统。最后以海战场电磁环境为例进行了仿真,结果证明该方法对陆海空等典型地海场景中的复杂电磁环境电磁波场强或接收功率的预测是非常有效的,具有较好的理论研究和应用价值。

Researching on radar, Beidou satellite navigation and other systems which depend on electromagnetic wave can not avoid analyzing the problem of electromagnetic wave propagation characteristics. The electromagnetic environment prediction method based on the statistical model arid a prediction method based on the parabolic equation are proposed. The parabolic equa- tion is derived to calculate that the total propagation loss is equal to the superposition of the propagation factor and loss factor to the electromagnetic field quantity and then electromagnetic environmental prediction system is designed. Finally, the sea battle- field is taken as an example to be simulated. The result shows that the method is very effective to predict electromagnetic wave field strength or receiving power on land, sea and sky typical scenes in the complex electromagnetic environment. It has a good theoretical research and application value.