Tactical Data Link Technology Research

In modern warfare combat units to share information to achieve fighting action synchronization is the key to winning a war. Intelligence information exchange between multiple platform can be realized by Tactical Data Link. Building of Tactical Data Link is one of the important indicators of the development of information warfare. Application of Tactical Data Link determines the level and ability of information warfare in great significance.This paper analyzes and researches the background and significance of the Tactical Data Link and selects appropriate content and scope for research. According to the real-time capability, confidentiality reliability, throughput, interference and other needs of Tactical Data Link in battlefield applications, This paper researches on the overall technology of Tactical Data Link, and analyzes information transmiting channels which meets the require of Tactical Data Link, and analyzes solutions of some specific technology such as encryption of source information, encrypted parity, channel coding, soft spread spectrum, intertwinetion and generation of frequency hopping patterns. This paper also analysis on business integration in Tactical Data Link. According to the different businesses such as data, voice, picture and video, and their different requirements on transmiting channel, this paper analyzes proper slot distribution proaches to assign proper band and transmiting slot for them. According to reliability requirements of different business, a method choices proper message format to packet them. This paper gives a specific realizing technology of business integration in Tactical Data Link. This paper also analyzes net structure and synchronization technology in Tactical Data Link. This paper analyzes single and multiple network slot structure which is suitable for JTEDS system, and analyzes the factors which impact on network synchronization, such as errors made by random channel change and errors made by platform moving. This paper also proposed an improved method in which there are two answer messages. It is proved by simulation that the errors are obviously reduced with the new method.