On-line measurement for velocity and particle size distribution of flowing aerosol by dynamic light scattering

•The velocity of flow aerosol is obtained based on cumulants of the intensity autocorrelation function (ACF).•The flow velocity acquisition based on cumulants of ACF is used for both unimodal and bimodal distribution of aerosols.•In the inversion of dynamic light scattering for flow aerosol measurement, the noise widens the distribution, shifts the peak value, and increases the peak height ratio.