深空任务数据接收最佳帧同步仿真与结果分析

Discussion and Analysis of Optimum Frame Synchronization Simulation Method for Data Receiving in Deep Space Mission

摘要: 深空任务数据接收过程中，帧同步是实现各种信道编码性能的基础，寻求最佳帧同步是提高数据接收效率的关键环节。根据月球探测任务数据接收的帧同步策略，完成了帧同步建模与仿真软件编写，并进行了正确性验证。通过软件仿真来寻求在高误码率情况下帧同步策略的最佳参数设置方法。通过使用经过验证的软件仿真平台，探讨最佳帧同步参数设置的仿真方法。制定帧同步的性能衡量标准，并根据帧同步仿真结果评价不同参数设置下的帧同步性能。最后，总结出一套寻求最佳帧同步参数设置的方法，根据该方法得到了仿真测试数据，通过对仿真数据的分析，得到了最佳帧同步的组合参数报告。经过工程任务设备的正确性检验，最佳帧同步组合参数仿真报告可以作为深空任务数据接收中帧同步的参数设置提供参考。

Abstract: The realized channel coding performance is based on frame synchronization in the process of data receiving in deep space mission. Seeking the optimum frame synchronization performance is critical to improve the efficiency of data receiving. According to the frame synchronization strategy in national lunar mission, frame synchronization simu-lation software was completed and verified. This software simulation platform was used to find optimal parameter set-ting method for frame synchronization strategy in the case of high error bits rate. Simulation method was discussed to explore optimal parameters setting for frame synchronization by use of the software simulation platform. Some stan-dards were established to measure the frame synchronization performance, and according to the results of frame syn-chronization simulation, evaluate the frame synchronization performance in conditions of different parameters setting. In the end, the article summed up a set of methods for seeking optimum frame synchronization parameter setting by use of this software, and by this way the frame synchronization simulation test data was generated. The report of optimum frame synchronization was completed on how to set the frame synchronization parameters after completely data analy-sis. The software’s correctness was tested by equipment in national lunar exploration mission, and the optimum frame synchronization report can be consulted in data receiving system of deep space mission in future.