By the use of the electromagneticreflection information of targets and ground in database, the radar detection model can generate radar image dynamically.
基于目标和地面电磁反射特性数据库的信息和雷达探测模型，实现了雷达图像动态生成。
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Like its Cousins radar and sonar, lidar (light detection and ranging), works by broadcasting electromagnetic waves towards a target and then building up a picture from the reflection.
With electromagnetic theory of light, We found that the polarization of the light kept the same when the reflection of incident light satisfied critical reflection or dual-quadrature reflection.