北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2011, Vol. 34 ›› Issue (4): 43-46.doi: 10.13190/jbupt.201104.43.lixy

• 论文 • 上一篇    下一篇

CCSDSTM传输帧识别技术

李相迎,姚秀娟,孟新   

  1. 中国科学院 空间科学与应用研究中心, 北京 100190
  • 收稿日期:2010-10-19 修回日期:2011-04-07 出版日期:2011-08-28 发布日期:2011-07-18
  • 通讯作者: 李相迎 E-mail:lxy510@hotmail.com
  • 基金资助:

    中国科学院国防科技创新基金项目(CXJJ11M02)

A New Recognition Method Used in CCSDSTM Transfer Frame

  • Received:2010-10-19 Revised:2011-04-07 Online:2011-08-28 Published:2011-07-18
  • Contact: LI Xiangying E-mail:lxy510@hotmail.com

摘要:

针对空间数据系统咨询委员会(CCSDS)下行遥测(TM)传输帧识别技术的应用,利用校验多项式对(2,1,6)卷积码进行了识别,提出了基于编码模式串匹配的方法对卷积码进行节点同步;利用链路层帧长特征对ReedSolomon(255,223)编码的交织深度进行初始判别,并采用伽罗华域傅里叶变换对识别结果进行验证. 对识别算法进行了仿真,讨论了不同误码率情况下的识别结果. 仿真实验结果表明,算法可对TM传输帧进行有效识别.

关键词: 空间数据系统咨询委员会, 协议识别, 通道编码, 传输帧

Abstract:

A recognition method of downlink telemetry (TM) transfer frame of consultative committee for space data systems(CCSDS) is presented. A detection algorithm of (2,1,6) convolutional code based on check polynomial is examined. A node synchronization technique based on patternmatching is proposed for convolutional code. The frame length is used to roughly judge the interleaving depth of ReedSolomon(255,223), then the galoias field Fourier transform is introduced to verify the recognition results. Simulation is given according to different bit error rates and the TM transfer frame can be recognized effectively. 

Key words: consultative committee for space data systems, protocol recognition, channel coding, transfer frame

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