Analysis And Implementation Of Free Space Optical Communication Simulation System

Free space optical communication simulation system uses the classic atmospheric transmission theory model and combined with computer software development technology development. The simulation system considering the atmosphere scatters and absorption effect and the randomness of the atmospheric turbulence effect on laser atmospheric transmission.The system can simulate the laser radiation characteristics of atmospheric transmission and the system can demo laser transmission process. The system can provide some help for the study of the theory of the optical communication of space.This paper firstly introduced the optical communication simulation calculation theory model, the theoretical model is based on Bouguer-Lamber law, combined with Rayleigh scattering and Mie scattering’s classic theory, the theoretical model is to simulate atmosphere scatters effects on the free space optical communication. The paper is also based on the Oboukhov-Kolmogorov turbulent statistics theory, combining with the research of the random phase screen and atmospheric turbulence theoretical model. In weak turbulence conditions, Fourier transform of multi-layer phase screen technology is used to simulate atmospheric turbulence effects on the free space laser transmission. the theoretical model is free space optical communication simulation systems business layer foundation and the core module. Considering the practical application of the calculation precision requirements, the system simplified the theoretical formula of the complicated part, retained in atmospheric transmission process of the main factors of extinction.This paper concludes with several important laser atmospheric transmission theory model. The system will choose the most appropriate theoretical model for atmospheric environmental parameters so as to improve the precision of the system. The simulation software development is strictly accordance with the software project management process, with object-oriented method design to improve the simulation software system reusability and expansibility. The simulation system data layer uses Oracle 91 database to store the simulation data, using ADO interfaces to connect with database, using OpenGL to draw output simulation results, at the same time, The system uses multithread and other advanced software technology for coding to ensure that the system is stable and reliable.