Research Of Real-Time Performance In Tactical Data Link Systems

The basic function of Tactical Data Information Link(TDIL) is to guarantee that intelligence information can be exchanged in real time and shared among combat units, battlefield situation is under continuous real-time surveillance, so the ability of cooperation each other and the effect of joint operations are effectively improved. The multi-link simulation of TDILdirectly influences the evaluation of the TDIL's application performance.TDIL is representative application of data communications in military affairs. TDIL adoptes communication network technology to achieve new type data exchange among air Platform,army and navy. So the kernel of data link system is to research network protocol.Firstly, study background & actuality,study content and technical route of the thesis were introduced in chapter 1. Based on TDIL, the thesis summarized sort,function,characteristic and basic architecture in chapter2. On the basic of protocol of TADIL,in the thesis, polling protocol was adopted. Network configuration,data processing,protocol operation,network implementation and link operating procedure were particularly introduced in chapter3. In chapter 4, the thesis developed a MAC module of TDIL based on the QualNet simulation platform.In chapter 5 the thesis maked experiments with some scenes, some simulation results and analyses were given at the end. The result indicated that changed delay of TADIL message in application layer of TDAIL application layer accord with changed delay of TADIL message in MAC layer.In conclusion, MAC model of TDIL was designed in the thesis,as well as modeling multilink configuration. Through many experiments,the thesis analysed system performance.The results indicated that the system can meet the requirements of tactical and technical index in some condition, and had reference and guide value in engineering application.