目的 从米散射的基本理论出发.对有关的粉尘粒径的米散射效应进行研究.方法 所用的方法主要通过对米散射理论的深入学习、研究,运用Matlab编程软件对0~5 μm之间的微粒进行散射光强和散射相函数的计算,得到不同粒径的散射光强、散射相函数,然后利用COMS相机对激光拍摄得到其散射图像,利用散射图像的灰度值与0~5 μm之间加权平均的粒子散射相函数值作对比,比较程序实现的可行性.结果 得到了0~5 μm之间微粒的散射光强以及相应的散射相函数以及激光灰度图像在72°到108°的灰度值.结论 通过图像灰度值与散射向函数的曲线对比,证明了程序的可行性.%Objective To study scattering effect of relevant dust particle size based on basic theory of mie scattering. Meth-ods The method was mainly based on further study and research of the theory of mie scattering. The Matlab software was used to calculate the scattering intensity and the scattering phase function of the particles between 0 and 5 microns. Scattering inten-sity and scattered phase functions of particles with different sizes were obtained. Then, the scattering images were obtained by taking a laser shot by COMS camera. The feasibility of the program was verified by comparing the gray value of the scattering image with the weighted scattering particle function value between 0 and 5 μm. Results The scattering intensity of the particles between 0 and 5 μm and the corresponding scattering phase functions and the grayscale values of the laser grayscale images from 72 ° to 108 ° were obtained experimentally. Conclusion Comparing the gray scale value of the image with the curve of the scattering function proves the feasibility of the program.
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