Modulation and demodulation method for satellite laser communication system

With the rapid increase of space communication bandwidth demand, Japan, the European Union, and the United States are making efforts in the development of satellite laser communication system. Modulation and demodulation are important parts of the system, which directly determines the power efficiency, bandwidth utilization, volume, weight, implementation complexity and other factors of the system. The principle, realization diagram, and key parameters are given. The advantages and disadvantages of modulation and demodulation technology for typical satellite laser communication system are discussed. The fundamentals of satellite-to-ground communication, inter-satellite communication and deep space communication are analyzed in detail. It is a good reference for grasping the development trend and application scenario of the satellite laser communication system.