摘要
介绍了一致性劈绕射(UTD)的基本原理,推导了该理论下的一致性劈绕射场的分布表达式。以传统的劈绕射模型为基本参照,结合无源雷达电波传播特性,提出了以一致性劈绕射理论为基础的无源雷达绕射损耗模型,研究了有耗介质的无源雷达电波传播绕射损耗问题,并对该模型进行了仿真分析,为无源雷达电波传播遇到障碍物时电波的绕射损耗计算、分析、评估及应用提供了参考。
With the brief description of the basic principle of uniform geometrical theory of diffraction （UTD）, the distributing of the EM field used by UTD is deduced. Compared with conventional wedge diffraction model and combined with the feature of the electromagnetic propagation based on passive radar, the electromagnetic propagation of diffraction models based on UTD for passive radar are presented and the electromagnetic propagation loss problems of the dielectric wedge diffraction for passive radar are researched. Finally, the simulation of the model is executed and the conclusions are analyzed. The results offer the reference for the computation and application of the diffraction loss for passive radar, when the electromagnetic wave propagates over obstacles.
出处
《国外电子测量技术》
2009年第9期75-78,共4页
Foreign Electronic Measurement Technology
