卫星导航信号仿真系统实时性分析与验证

卫星导航信号仿真系统是一个实时性要求很高的射频信号仿真系统,它主要模拟包含多种信息的高精度射频信号。首先介绍了卫星导航信号仿真系统,与一般的仿真系统相比,它具有三个特点;接着对影响仿真系统实时性的仿真步长、时间函数及网络数据传输等几个因素进行了分析;最后详细地对影响系统实时性的帧溢出数、时间同步精确度等四个指标进行了验证。分析与验证的结果表明:该仿真系统具有很高的实时性,能够满足系统实时仿真的要求。

Real-time Analysis and Validation for Satellite Navigation Signal Simulation System

The satellite navigation signal simulation system is a frequency signal one, which simulates the signal of high precision and consisted of diverse information. Firstly, the satellite navigation signal simulation system is introduced; it takes on three characteris-tics, comparing to generic simulation system. Secondly, several elements such as simulation steptime, time function and network data transfers, which affected real-time quality of simulation system are analyzed. Finally, four real-time quality indexes such as frame overflow, time synchronization etc are validated in detail. By analyzing and validating, the result shows that the simulation system possessing higher real-time quality and it can meet the requirement of real-time simulation for the system.