Key Technologies and Development Trends of Free Space Optical UAV Communication Network
Considering the electromagnetic spectrum congestion and serious interference,the Free Space Optical(FSO)-based Unmanned Aerial Vehicle(UAV)communication network constitutes an important part for the space-air-ground integration,attracting substantial attention from both academia and industry.Compared to radio frequency communication,FSO communication is benefited from high data rate,low latency and high security.However,the FSO link is susceptible to atmospheric environment,while the mobile UAV dynamics topology and limited resources bring further challenges.Therefore,this paper first introduces the FSO transmission characteristics and then focuses on the key technologies to enhance stability and quality of FSO-based UAV networks.Furthermore,the development trend of FSO-based UAV network,in terms of high reliability,strong intelligence and long endurance is analyzed.
Space-air-ground integratedUnmanned Aerial Vehicle(UAV)communication networkFSO-based communication