光栅衍射与相控阵雷达结合的教学案例探索

EXPLORATION OF TEACHING CASES ON THE COMBINATION OF GRATING DIFFRACTION AND PHASED ARRAY RADAR

光栅衍射是光学教学中重要的章节,是对多缝干涉和单缝衍射的综合运用。但是教学过程中会出现教学过程枯燥、教学内容晦涩难懂等问题,这极大地影响了教学效果。本文基于光栅衍射的基本公式,以实际工程应用相控阵雷达为案例,融入课程思政,同时结合Matlab仿真,具体形象地展示了光栅常数、缝宽、衍射角对衍射光谱的影响,以及相控阵雷达的基本原理与以上各因素的联系,在学习知识的同时让学生掌握了相控阵雷达的基本原理。本次教学探索对于光栅衍射教学知识点的教学、思政、实际问题的解决都具有重要的意义。

Grating diffraction is an important chapter in optical teaching,which is the comprehensive application of multi slit interference and single slit diffraction.But in the teaching process,the students feel boring and hard to understand,which greatly affect the teaching effect.This paper,based on the basic formula of grating diffraction,takes the practical engineering application of phased array radar as an example,integrates the ideological and political education of the course.At the same time,we combines Matlab simulation to concretely and vividly show the influence of grating constant,slit width,and diffraction angle on the diffraction spectrum,which intuitively show the influence of the above factors on the phased array radar,and the students both study the grating diffraction and the phased array radar.This teaching exploration is of great significance to the teaching of grating diffraction teaching knowledge points,ideological and political education,and the solution of practical problems.