纠错编译码技术在JTIDS中的应用

JTIDS系统是16号数据链系统的通信部件,将指挥控制系统、计算机及各种数据终端组成有机的无缝网络系统,实现作战信息资源共享,为保证数据信息安全可靠的进行交换,其消息传输格式采用了RS纠错编译码、CRC检错编码及交织编码等纠错编码技术.通过分析JTIDS中的RS编译纠错码原理,利用Matlab 6.5,在AWGN信道模式下,以MSK为调制方式,对JTIDS的固定消息格式在RS码和交织编码等纠错编码技术中的信号比特差错概率进行了仿真分析.分析表明利用RS码和交织编码等技术,在纠错范围内比特差错概率较不用纠错编码技术时有着明显的改善,即数据信息传输的安全性可靠性更高.

Application of Error Corrected Coding and Decoding Technique in JTIDS

Joint Tactical Information Distribution System(JTIDS) is a communication part of Link-16 System.Command and control systems,computers and every kind of data terminals can constitute an organic seamless network system through it,and the battle information resources can be shared for each others of the network system.And the coding and decoding techniques such as RS error-corrected coding and decoding,CRC error-corrected coding and Interweaved coding are used in JTIDS message transmission format.So it guarantees that the data information can be transmitted in credibility and security.The principle of RS error-corrected coding and decoding used in JTIDS was analyzed in this paper.Also by using Matlab 6.5,the author gives out the simulation and analysis of the bit error probability of the fixed-format message used RS error-corrected coding and decoding and Interweaved coding by MSK modulation in the AWGN model.The result indicates that the bit error probability is improved obviously in the coding and decoding techniques at the error-corrected range.That means that the credibility and security of the transmitted data information are higher.