测量微粒粒度分布时 ,其散射角测定的精度非常重要。本文通过对微粒散射极值分布特征、PSD位置响应特征、多峰分布微粒响应特征以及多光斑定位方法的研究 ,提出了时序扫描的多工位定位方法 ,精确测定了散射极值分布点 ,实现了微粒散射空间分布谱的精确标定 ,从而在微粒粒度分布的测量中得到了较好的应用。 When measuring the particle size distribution, the accuracy of the scattering angle measurement is very important. Based on the study of the extreme scattering characteristics of microparticles, the PSD location response characteristics, the multimodal response characteristics of particles and the multi-spot location method, this paper proposes a multi-station positioning method for time-series scanning and accurately determines the distribution of scattering extremes, The precise calibration of the spatial distribution spectrum of the particles has been applied to the particle size distribution measurement.