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利用Ｔ矩阵法，通过严格求解Ｎ个粒子的多次散射方程，发展了任意大小、空间分布和取向的多个非球形粒子集合性相干散射的数值计算方法。数值地给出了群聚椭球粒子双站和后向极化散射与粒子的形状、分布和取向等参量之间定量的函数关系。讨论了（１）群聚椭球粒子与等体积球形粒子后向散射的差异；（２）群聚椭球粒子的不同取向对集合性相干散射的影响；（３）多个粒子相干散射与独立散射的差异；（４）群聚粒子多次相干散射对复散射振幅函数值和消光系数的影响。并将数值结果和已有的实验结果进行了比较。
By using the T matrix method, the numerical calculation method of collective coherent scattering of a plurality of non-spherical particles of arbitrary size, spatial distribution and orientation is developed by strictly solving the multiple scattering equations of N particles. The quantitative functional relationship between the parameters of billets and back polarizations of particles and the shape, distribution and orientation of the particles is given numerically. (1) Differences of backscattering of cluster-spheroid particles and equal-size spherical particles; (2) Effect of different orientations of cluster-spheroid particles on collective coherent scattering; (3) Coherent scattering of multiple particles and independent (4) The influence of multiple coherent scattering of complex particles on the complex scattering amplitude function and extinction coefficient. The numerical results are compared with the existing experimental results.