【摘要】 光散射法测粒技术中常常会碰到反问题 (inverseproblem) ,即对多分散的颗粒两相介质 ,通过测得的多个角度或不同波长下的光信号 ,求解第一类Fredholm积分方程。从理论和实验两方面出发 ,改进了Twomey算法在前向散射和消光法测粒技术中的应用 ,获得合理的颗粒粒径分布结果更多还原

【Abstract】 Inverse problem is always encountered in particle sizing techniques based on the light or acoustic scattering. Here, through numerical simulation and experimental validation, the Twomey algorithm applied in the foregoing measuring methods was improved and the reasonable results of particle size distribution were got. As a result, the Philip-Twomey-NNLS algorithm combined with generalized cross validation (GCV) technique is proved effective to handle the inverse problem in particle sizing.更多还原