The Study on Reducing Mixed Image Noise of Beacon Spot in Satellite Optical Communication

Abstract

In satellite optical communication system, the spot centroid locating of a beacon plays an important role in establishment and maintenance of laser links. In this paper, we analyze the type and source of noises in a laser spot, and the principles of some denoising methods are summarized. To improve spot locating accuracy, four different methods are used to process the mixed noise. The simulation results show that denoising effect of Butterworth low-pass filtering is relatively good. This work provides guidance for spot locating in satellite optical communication system.