摘要
通过抽取DTED格式数字地图的地球大圆二维剖面,结合Longley-Rice电波传播模型,设计了一个预测不规则地形上雷达波传播特性的工程软件.该软件不仅考虑了不规则地形对电波传播所产生的多种干涉效应和绕射效应,还充分考虑到了大气折射、对流层散射等效应对电波传播的影响.计算结果表明,该软件准确可靠,且具有实时预测性.
Combining with the Longley-Rice wave propagation model, a project soft for predicting radio wave propagation loss on irregular terrain was designed by extracting a two-dimensional profile of the earth great circle with the DTED format digital map. Not only the various interference and diffractive effect resulted from the irregular terrain but also the influence of atmosphere＇s refractive and troposphere＇s scattering on the radio propagation were taken into consideration. The computational results show that the soft is exact, reliable, and of prediction in real time as well.
出处
《空军雷达学院学报》
2008年第4期271-274,共4页
Journal of Air Force Radar Academy
关键词
数字地图
不规则地形
电波传播
衰减预测
digital map
irregular terrain
radio wave propagation
loss prediction
