The Research And Design Of Data Reconstruction System On Ground

With the continuous improvement of living standards, Travel by plane hasbecome more and more people's choice, the flight safety also need extra attention.During the flight test or normal flight, Aircraft will produce lots of control andmonitoring data, which is very important basis to monitor and improve the plain.Although the most aircraft are installed the flight data recorder (FDR) to record thesedata, as times progress, need equipment miniaturization, intelligent, anti-jamming,and can adapt to complex situation. Therefore, it is important to develop the datareconstruction system on ground.The data reconstruction system on ground consists of hardware acquisitionsystem and data playback software. This thesis mainly completed the programmingand debugging of data playback software, and made a detailed description ofhardware acquisition system and the RLE compression algorithm. The design of dataplayback software based on VC + +6.0 platform, as the system collected massive dataand used the RLE compression algorithm, so the data playback needed using memoryfile mapping to read data files and real-time decompression while in data processing,the software also need getting the absolute position of second timestamp byconverting the original time scale file. When processing and displaying massive datafiles, the software divided into two cases about coarse resolution and fine resolution,pulse data can be fast and accurately displayed based on the user input and the currentstate of the software processing.There are many functional modules in data playback software, including pulsedata scaling, fast measurement, selecting and displaying the time period, informationtips, sharpshooting images and so on. The realization of all the function modules mustbe programmed and integrate with data processing and displaying. After a long periodof programming and debugging, all the basic functions of data playback software hasbeen completed, the software has been tested after delivery,that achieves therequirements of the users and design goals.