在可见光范围内,对消光光谱法颗粒测量技术中的病态性问题进行分析,对目标函数的极值情况和反演计算结果进行了计算讨论,并对标准聚苯乙烯颗粒进行了实验测量和反演计算。模拟计算和实验结果表明,在消光光谱法测量中,亚微米级颗粒的病态性表现得尤为严重,目标函数极值情况和反演结果对误差非常敏感,反演结果的稳定度和准确度较差。为保证测量结果准确性,应尽可能减小测量误差。微米级颗粒对应的目标函数极值情况和反演计算结果则较为理想。 In the visible range, we analyzed the ill-posed problems in the extinction spectroscopy particle measurement technology, calculated and discussed the extreme value of the objective function and the calculation results of the inversion, and measured and contrasted the standard polystyrene particles Perform calculations. The results of simulation and experiment show that in the extinction spectrometry, the submicron particles behave worse than others, the extreme value of the objective function and the inversion result are very sensitive to the error, and the stability and accuracy of the inversion result difference. To ensure the accuracy of the measurement results, the measurement error should be reduced as much as possible. The extreme value of the objective function corresponding to the micron-sized particles and the inversion calculation result are ideal.