遥测PCM数据加密技术研究

摘要

遥测数据中包含飞机及武器的大量重要数据信息，是现代电子战中第三方的主要截获目标，因此遥测数据的加密需求变得更加迫切。针对这一需求，在分析加密算法的基础上，提出了遥测数据加密方案。通过分析PCM帧格式，并合理配置密码字在PCM帧中的位置，在现有系统中通过增加加、解密相关设备，完成遥测数据的加、解密过程。配合合理的密钥管理机制，实现了遥测数据的加密传输。经实践证明，该技术能够满足飞行试验遥测数据传输的基本需求。%Telemetry data contains a large number of important data information of aircraft and/or weapons,is the main in⁃terception target of third party in modern electronic warfare. Therefore,the encryption requirements of telemetry data become more and more urgent. Telemetry data encryption scheme has been proposed on the basis of the analysis of encryption algorithm. Through the analysis of the PCM frame format,and the rational allocation of password in PCM frame position,Telemetry data encryption and decryption were completed by adding related encryption and decryption equipments in the existing system. Teleme⁃try data encryption transmission was archived with the rational key management mechanism. The practice shows that this scheme can meet the basic requirements of telemetry data transmission in the flight test.