| The command-and-control site is the window of show our strength and level.How to show aircraft flight process vividly,intuitively and accurately is a research hot content of each command-and-control site.The previous space mission information content is not rich,display form is single,etc.In order to better adapt to the high demand to space missions information construction,the space mission 3d situation display system was based on EV-Globe designed and achieved according to the analysis of 3d status home and abroad.This research makes the commander and experts can grasp details of the aircraft state intuitively and vividly.It is conducive to implement task command decisions timely,quickly,accurately and comprehensively.In this paper,research work mainly includes the following three aspects:(1)The key techniques based on the EV-Globe platform of 3d display is studied.The paper mainly studied how to build landmark information database,the3 d model library and special action library and so on;The key technologies are carried on thorough research,such as image pyramid,the level of DEM detail model,object rendering,special effects of particle loading and skeletal animation.Through the application of these key technologies,the 3D display effect of the space mission was enhanced,and the whole process was vividly displayed.(2)Because of the jitter problem caused by real time data,a method of removing the eliminating outliers of aircraft real-time track data is studied,and smoothing filtering,extrapolation method of aircraft real time track data are compared.The data processing method having good effect to data process,which is suitable for the actual aircraft flight,is designed to drive 3d model flying smoothly and intuitively and whole display flight procedure.(3)The 3D simulate is needed to display the key movements of the aircraft.The manual interpretation based on limit data,low efficiency,causes leak judgement easily,so,time series mutation point detection method and time parameter interpretation based on priority are studied.The automatic interpretationis designed to drive the 3d display system correctly and reliably to simulate the key movements of the aircraft. |
