基于QualNet的数据链联合仿真应用研究

为更真实地仿真分析数据链系统性能,基于QualNet仿真框架引入联合仿真思想。提出了一种QualNet与Simulink进行联合仿真分析数据链系统的新方法。通过分析QualNet中底层模型,得出其自身模型难以满足数据链仿真精度要求的结论。在此基础上使用Simulink建立相对精确的数据链底层模型。仿真得到上层所需要的数据,实现与Simulink联合仿真数据链系统。仿真结果分析表明,该方法建立的系统模型能够较真实反映底层模型对上层协议的影响,所建立的系统模型具有较高的可信度和较强的灵活性。

Research on Data Link Co-simulation Application Based on QualNet

In order to better simulate and analyse the performance of data link system,the co-simulation idea based on QualNet simulation framework is introduced and a new method that making use of QualNet and Simulink to simulate and analyse the data link system has been put forward.Through the analysis of the lower layer model of QualNet,it is concluded that its own model is difficult to meet the accuracy required by data link simulation.On that base, tuilizing Simulink to build relatively accurate model of the lower layer in data link simulation,obtain the data needed by upper layer and realize the system mentioned before.The simulation results show that the system model created by this method can be more truly reflect the influence on the upper layer protocols made by the lower layer model and has a higher reliability and stronger flexibility.