毛为,刘涛,刘亚妍.大型民机试飞遥测视频编解码方法研究[J].民用飞机设计与研究,2019,(2):21-25
大型民机试飞遥测视频编解码方法研究
  
DOI:10.19416/j.cnki.1674-9804.2019.02.005
中文关键词:输流编码  异步流编码  PCM
英文关键词:transport stream coding  asynchronous stream coding  PCM
基金项目:
作者单位
毛为,刘涛,刘亚妍 中国商飞民用飞机试飞中心上海 201323 
中文摘要:遥测数字视频作为一种监控手段,在大型民机试飞取证中扮演着重要角色。针对H.264压缩下的遥测视频,提出了传输流编码和异步流编码两种不同的脉冲编码调试(Pulse Code Modulation,以下简称PCM)格式,描述了两者的数据结构,对比分析了在带宽利用率、抗干扰等方面的特点,并阐述了在两种编码格式下多路嵌入式高清视频数据流的识别、提取、解析和播放,保障了某型民机首飞以及重要科目的试飞,为保证试飞安全、缩短试飞周期奠定了技术基础。
英文摘要:As a monitoring method, telemetry digital video plays an important role in the test flight of large civil aircraft. For telemetry video under H.264 compression, two different PCM coding formats are proposed,which are transport stream coding and asynchronous stream coding. This paper describes the data structure of the two codes, compares and analyzes the characteristics in terms of bandwidth utilization and anti-jamming. At the same time, this paper elaborates on the identification, extraction, analysis and playing of multi-channel embedded HD video data streams under two encoding formats, which successfully guarantees the flight test of some aircraft on important subjects, and lays the technical foundation for ensuring the flight test safety and shorten the flight test period.
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