测控信息传输可靠性保障方法研究

随着IP（互联网协议）在测控领域的广泛应用,丢包、时延等IP网络特性对测控信息传输的可靠性提出了挑战。针对遥/外测、引导及上行控制类数据在信息传输各个环节的技术特点,本文深入研究了各类测控数据的信息传输模型及工作流程,提出了适用于不同场景的可靠性保障方法,并通过数学仿真进行了计算分析。仿真结果表明,队列中断选切策略可有效保障遥/外测及引导类信息的可靠传输,N判M模式下的上行控制类信息传输可靠性优于N选1模式。

Assurance of the Reliability of TT&C Data Transfer

With more and more extensive application of IP technology in aerospace TT&C,packet loss and transfer delay,which are inherent properties of IP networks,are more frequently encountered and this has a significant impact on the reliability of TT&C data transfer.Based on the technical features of transfer of telemetry and tracking,guidance and command data,this paper studies the data transfer models and operation processes for different types of TT&C data,and proposes measures for assurance of the reliability of data transfer under diversified conditions.Mathematical simulation and computation shows that queue-interrupt-switching method provides significant improvement of the reliability of transfer of telemetry and tracking data and guidance data,and M-from-N judgment mode is superior to 1-from-N mode in reliability of command data transfer.