地面散射 meaning in English

ground scatter

The land clutter is useless signals for target detection caused by land terrain . the multipath effect is some kind of interference which is caused by wave reflection on terrain . the diffraction effect is the phenomenon of wave propagation into shadow region
地杂波是由地面散射引起的对目标探测无用的信号;多路径是由电磁波在地面反射所引起的干涉;衍射则是电波绕射传播到遮蔽区的现象。
Based on mono - pulse radar system and the analysis of terrain echoes , a geometrical model of air to ground ranging is constituted . by using the signals received from the sum and difference channels of terrain follow radar , a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained . according to the characteristics of the echoes , the theory and method of pass zero detection of difference channel and its applications are discussed in detail
针对一维单脉冲雷达体制，分析了地形目标回波特性；建立了地形跟随雷达空地测距的几何关系；利用雷达收发信号，导出了地形跟随雷达和差接收通道的回波信号表达式，进行了波形仿真，得到了地形跟随雷达的地面散射产生回波在时域中的特性；根据和差回波特性，阐述了差信号过零点检测测距的原理和方法及工程实践中的应用，并给出了真实雷达对外辐射试验的结果，验证了文中的仿真。