摘要
深空探测具有时延长、运动速度大以及信号强度低的技术难点。在对上述技术难点进行分析的基础上,提出了对深空动态模拟的解决办法:通过利用闭环双口RAM来解决模拟时延较长的问题;改变读出双口RAM数据的速率来模拟卫星的运动速度;控制数控衰减器来模拟深空的信号强度。实际的工程应用证明上述实现方法有效可行。
The deep space exploration has the characteristics of long time delay, high satellite＇s velocity and the weak signal. Based on analysis of the above technique difficulties, the solution is proposed ： the close loop dual -port RAM is used to solve the long time delay simulation, the reading data speed from dual - port RAM is changed to simulate the satellite＇s velocity, and through controlling the digital attenuator the deep space＇s signal intensity is simulated. Engineering applications have proved the feasibility of the solution.
出处
《电讯技术》
北大核心
2011年第3期33-36,共4页
Telecommunication Engineering
关键词
深空探测
测控信号
动态模拟源
闭环
双口RAM
deep space exploration
TF＆C signal
dynamic simulating source
close loop
dual - port RAM
