烟幕消光性能数值计算方法发展现状

Development of the Numerical Calculation Methods of the Extinction Performance of the Smokescreen

粒子光散射模型是计算烟幕材料消光性能的理论基础,也是研究物质与电磁波的作用原理以及从理论上设计先进光电干扰材料的关键。详细介绍了在烟幕材料计算领域广泛应用的几种数值计算方法,包括T矩阵法、时域有限差分法(Finite-Difference Time-Domain Method,FDTD)、有限元法(Finite Element Method,FEM)和离散偶极近似(Discrete Dipole Approximation,DDA)方法。描述了这些方法的发展历程、优缺点和应用现状,并指出了烟幕粒子消光计算与模拟的发展方向。

The light scattering model of the particles is the theoretical basis for calculating the extinction performance of the smokescreen materials,and it is also the key to study the interaction principle between the materials and the electromagnetic waves,and to design the advanced photoelectric interference materials theoretically.Several numerical calculation methods widely used in the field of the smokescreen materials calculation are introduced in detail,including T-matrix method,finite difference time domain(FDTD)method,finite element method(FEM)and discrete dipole approximation(DDA)method.The development process,the advantages and disadvantages,and the application status of these methods are described.The development direction of the extinction calculation and simulation of smokescreen particles is pointed out.