Since the laser beam divergence angle is very small, and there is no scattering effect in the space, the positioning technology of laser source is a difficult problem in the field of laser detection and interference. In this paper, a new method based on the scattering of the laser beam is presented, by using MIE scattering theory the theoretical analysis and numerical calculation of the properties of the light scattering of particles is carried out. The relationship between the scattering light distribution and the size parameters of the microspheres and the complex refractive index is obtained. The results show that the scattering intensity of the aerosol particles is mainly distributed in the forward direction, and the scattering angle decreases with the increase of the scattering angle. It can be concluded that the laser beam based on aerosol scattering is feasible.
