地面数据重构系统研究与设计-通信与信息系统专业论文.docxVIP

f1 f1、 i ABSTRACT Wi由 the continuous improvement of living standards，Travel by plane has become more and more peoples choice，the flight safety also need extra attention. 。町ing the flight test or normal flight，Aircraft wi11 produce lots of control and monitoring da钮， which is v町y important basis ωmonitor and improve the plain. Although the most aircraft are installed the flight data recorder (FDR)ωrecord these ， da钮，即 times progress，need equipment miniaturization ，intelligent，antijamming ， d and can adapt to complex situation. Therefore，it is important to develop the da俑 reconstruction system on ground. 丁be da阳 reωnstruction system on ground consists of hardware acquisition system and data playback software. This 也esis mainly completed the programming and debugging of 也饱 playback 80俞ware，and made a detai1ed description of h町dware acquisition system and the RLE compression algorithm. The desi惧。fdata playback software b剧创 on VC + +6.0 platform ，部也e system collected massive data and used the RLE compression algorithm，so the data playback needed using memory file mapping to read da饱 files and real-time decompression while in data processing ， 由e so食ware also need getting the absolute position of second timestamp by converting 由e original time scale file. When processing and displaying massive data files，the software divided into two c倒es about coarse resolution and fine resolution， pulse data can be fast and accurately displayed based on 也eus町 input and the cuπent state of the software processing. There 町e many functional modules in da阳 playback so白ware，including pulse -wdata scaling，fast measurement ，selecting and displaying the time period ，information tips，sharpshooting images and so on. The realization of all the function modules -w 、fbe programmed and integrate wi曲曲蚀 processing and displaying. After a long period of programming and debugging，all the basic functions of data playback so班ware has been completed ，the software has been te