一种机载景象记录回放系统的研制

研制了一种机载景象记录回放系统。该系统采用MPEG-2压缩标准,对视频、音频信号进行压缩,有效地延长了数据记录时间;通过通道选择,可以对来自不同传感器的数据进行压缩记录;通过软件控制,方便、简洁地实现了记录数据的管理、下载、删除和回放等操作。该系统能够真实记录飞机座舱内各种仪表的动态变化过程、飞行员的操作动作以及座舱内的声音信息,通过下载和回放,可以真实再现飞行时的情景,从而为进行飞行技术评估、提高飞行质量、改善维修保障等提供可靠的参考依据。通过性能测试与实际试验,证明该系统达到了设计功能和性能指标要求,现已交付部队使用。这里对其整体方案、硬件结构、软件流程进行了简要介绍。

Development of airborne vision recording and replaying system

An airborne vision recording and replaying system has been developed.It uses MPEG-2 compression standard to compress the video and audio data,and prolongs the recording time greatly.By channel selection it can record the data from different sensors;by software control it can easily manage the recorded data(such as download,delete,replay).Dynamic procedure of instruments and sounds in the aircraft cockpit and operations of the pilot all can be truly recorded by the developed system.By downloading and replaying,it can recur the scene in the air completely.Thus it can supply reliable references for evaluating flight,improving flying qualities and reforming maintenance service capability.From performance test and practical experiments,it is proved that the system reaches the standard of the design function and satisfied the demands of performance index.Nowadays the system has been also equipped in the army.This paper mainly discusses the system scheme,hardware structure and software flows.