Research On The Key Technology Of Aviation Data Link

With the digitalization and informatization of modern warfare, the army mustbased on winning information-based local wars. This requires all of the platformsengaged in the fighting sharing their situation, optimizing, deploying and using themilitary hardware resource, in turn increasing the overall combat capability.As thedirector of the modern war, the aviation data link network has been attracting more andmore attention,and has been developing rapidly in every country,to satisfying demandsfor air combat in modern times and future.The aviation data link network has the features of high-speed, broadband, highanti-destroy ability, real-time, quick initialization network，fast entering network and soon. With it’s support, all the unities joined the battle sharing and distributing thesituation information of the battlefield quickly, to understanding the situation of thebattlefield more accurately, overall and quickly by the wireless mobile ad hoc network.Consequently achieving the tactical intention of “earlier detecting the enemy,earlier firethe enemy”.The aviation data link using TDMAprotocol is the development direction of futuretactical data link. Time-slot assignment technology is the key one to the TDMAsystem.Combining the development situation the aviation data link, based on the Unifying SlotAssignmet Protocol, the framework of the network and the the structure of MACadapted to the aviation data link in the paper. Then, the paper proposes the initializationplan of the network based on the combination of directional antenna andomnidirectional antenna, and time slot allocation algorithm which designed for thisscheme. At last, modeled and simulated the aviation data link network using the OPNETnetwork simulation software, Theoretical analysis and simulation results from twoaspects demonstrate the feasibility and the performance of the scheme.