摘要
在分析地形对雷达覆盖的遮挡中,需要考虑地球球面以及大气层折射的影响。建立以地球中心为原点的三维空间直角坐标系,仿真地球原状,在地球球面的基础上表示地形的高程。同时根据无线电波在大气层传播中的折射理论,利用计算机模拟出雷达射线的轨迹,在此基础上分析地形对射线的遮挡,从而得出雷达信号的覆盖图。已经开发出1套相应的计算机软件系统,验证了该方法的可行性和有效性。
In analysis of terrain masking for radar coverage,effects of spherical earth and atmospheric refraction should be considered.Establishes 3-dimentional coordinate system with center of earth as original point,simulates the original earth on which elevations of terrain are built.At the same time trace of ray propagation is simulated by computer based on the theory of layered atmospheric refraction for radio wave.On this basis,terrain masking for ray is analyzed and radar coverage is calculated.Has developed a software system to implement this method,which validates the feasibility and validity.
出处
《电子测量技术》
2011年第7期40-42,共3页
Electronic Measurement Technology
关键词
雷达覆盖
地形
大气折射
地球球面
radar coverage
terrain
atmospheric refraction
spherical earth
