[关键词]
[摘要]
针对雷达高度较高的电波传播情况,分析了无线电物理光学(RPO)混合模式在这种条件下可能产生的多种计算错误.高空混合模式在高仰角区域引入只考虑直射射线的直射线平地球FEDR模式来弥补单一抛物方程模式的不足,避免了RPO模式的计算缺陷,但近距离的电波效应计算不够准确.其解决的方法是通过引入RO模式计算近距离处反射射线的干涉效应,建立一种新的适用于高空雷达传播的混合模式,并给出了计算结果.结果表明,改进的高空混合模式能够演示近距离处射线的干涉效应,可以更准确地描述雷达电波传播特性.
[Key word]
[Abstract]
For airborne radar propagation,some wrong results induced by radio physical optics(RPO) hybrid mode are analyzed to avoid the problem,the airborne hybrid mode introduces FEDR method to overcome the high computation burden of pure PE model in the high elevation region,but this mode only considers the effect of direct rays in near range.To solve this problem,a new airborne hybrid mode is established which considers the interference of reflected rays using ray optics(RO) method in near range.Calculation result...
[中图分类号]
TN959.73
[基金项目]
国家安全重大基础研究项目?
