测控信息传输可靠性保障方法研究

摘要

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.%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-M mode in reliability of command data transfer.