1·Terrain defilade is a key factor for early warning system (EWS) in detecting low altitude targets, effective algorithm provides the foundation of operational simulation.
地形遮蔽是影响预警探测系统发现目标能力的关键因素。有效算法是实施模拟仿真的基础。
2·The measurement and plotting of defilade angle is a very important training subject even if using real radar set.
即使是在真实装备中，测量与绘制雷达遮蔽角也是一个非常重要的训练科目。