| 摘要: |
| 为适应现代战争数字化的军事需求，解决战场环境下需要传输的信息种类和数量日益增多以及网络带宽受限等问题，设计了可变报文格式（VMF）编解码模块，作为底层消息传送的技术支撑。利用动态链接库、JSON(Java Script Object Notation)、Snappy(压缩算法)等技术为上层应用提供消息的编解码服务，设计基于JSON的可变长报文模板、比特流集成压缩算法、基于JSON的数据字典结构，实现报文的“按需发送”，根据不同的发送需求，动态地组合报文内容。实验显示所设计的模块编码解码只需3 ms左右，而参考系统编解码则需耗时200 ms以上，可见速率提升明显，数据流长度也进一步缩短。 |
| 关键词: 可变格式报文 编解码模块 JSON 数据字典 比特流集成压缩 |
| DOI： |
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| 基金项目:国家部委专项资金资助项目（403060101） |
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| Design and implementation of a variable message format coding and decoding module |
| LIU Xiang,LIU Zeping |
| () |
| Abstract: |
| In order to adapt to the military requirement of modern war digitization and solve the problems of increasing amounts and types of information need to be transmitted in the battlefield environment and constrained network bandwidth,a decoding module of variable message format(VMF) is designed as the technical support of underlying message. Using dynamic link library,Java Script object notation(JSON),Snappy and other technology,it can provide the service of message codec for the upper application. The design is based on the template of JSON,bit stream integrated compression algorithm and the data dictionary structure JSON,and then realizes the message sent "on demand" and the combination of dynamic message content according to the different delivery requirements. The experiment shows that coding and decoding only takes about 3 ms in the designed module,while the original decoding system takes over 200 ms. Obviously,it can increase the rate,and further shorten the length of the encoded data stream. |
| Key words: variable message format(VMF) coding and decoding module Java script object notation(JSON) data dictionary bit stream integrated compression |
《电讯技术》编辑部 