针对超远距离散射链路路径损失大、信噪比极低的问题,研究低码率Turbo码在散射通信中的应用.介绍了散射通信系统结构,对散射信道进行建模,然后对基于CCSDS标准的Turbo码进行研究,并对译码算法进行应用改进.仿真结果表明,在超远距离散射链路中,采用基于CCSDS标准的Turbo码,可以提升系统性能,保证关键指控信息的可靠传输.“,”Aiming at the large path loss and low SNR of ultra-long distance scattering link,the research on Low Bit Rate Turbo Codes for Scattering Link is carried out.First,the structure of the scattering communication system and the scattering channel model are introduced.Then the turbo codes based on CCSDS standard is studied and the decoding algorithm is improved. Finally,Matlab simulation is carried out,and the results show that the turbo codes based on CCSDS standard can improve the performance of the ultralong distance scattering system and ensure the reliable transmission of the critical command and control information.