Spectrum characteristics of optical misalignment induced by satellite platform vibration and angle of arrival fluctuation

In this paper, we discuss feasibility of the concept that the effect of angle of arrival fluctuation can be taken as an effective simulation of satellite platform vibration in the ground test process of PAT system for a laser satellite communication system. Spectrum characteristic of satellite platform vibration is introduced, referring to the model used by the European Space Agency (ESA) in design of SILEX program. Spectrum characteristic of angle of arrival fluctuation is analyzed based on the measured data from an 11.16km bi-directional free space laser transmission experiment. Spectrum characteristics of these two effects are compared. The result shows that the feasibility of the concept can be proved by the comparison result.