【正文】 摘 要 隨著飛行訓(xùn)練的成本越來(lái)越高，培訓(xùn)機(jī)構(gòu)急需能夠部分替代實(shí)際飛行訓(xùn)練的飛行模擬器進(jìn)行飛行模擬訓(xùn)練，以有效地減少飛行訓(xùn)練的成本，提高飛行訓(xùn)練的效果。飛行視景仿真是飛行模擬器的一個(gè)重要組成部分，建立飛行視景仿真系統(tǒng)，不僅可以降低其研制和開(kāi)發(fā)的費(fèi)用和周期，減少各種飛機(jī)機(jī)體實(shí)際內(nèi)部故障或者不可預(yù)見(jiàn)的復(fù)雜飛行環(huán)境導(dǎo)致的可能性故障，還可以向飛行人員模擬出真實(shí)的三維場(chǎng)景及有效的飛行信息，提供逼真的飛行效果與飛行姿態(tài)，使得培訓(xùn)人員可以更快速更安全更熟練地進(jìn)行各種飛行操作設(shè)備，順利完成各種飛行任務(wù)操作以達(dá)到培訓(xùn)目的。 本文在分析飛行仿真的需求基礎(chǔ)上，設(shè)計(jì)的飛行模擬器可以較好地完成飛行仿真功能，提供多種飛行訓(xùn)練場(chǎng)景，有助于飛行技術(shù)的提高和飛行體驗(yàn)。在飛行仿真的理論基礎(chǔ)上，借助相關(guān)的可視化技術(shù)，綜合運(yùn)用模型構(gòu)造、系統(tǒng)運(yùn)行、模型驅(qū)動(dòng)等一系列技術(shù)，利用 Creator 軟件進(jìn)行仿真建模，完成飛機(jī)、飛行場(chǎng)景的建模，設(shè)計(jì)基于 Vega Prime 環(huán)境的飛行視景仿真系統(tǒng)，實(shí)現(xiàn)動(dòng)態(tài)在線飛機(jī)飛行運(yùn)動(dòng)的全過(guò)程，為飛行訓(xùn)練提供良好的飛行仿真環(huán)境。本系統(tǒng)可以建立虛擬飛行訓(xùn)練環(huán)境，能有效的完成基本的飛行條件，提供多種飛行場(chǎng)景方案，但同時(shí)也有控制功能較少 ，場(chǎng)景較為單一的缺點(diǎn)，待后續(xù)技術(shù)條件成熟時(shí)進(jìn)一步的完善與提高。 關(guān)鍵詞 ： 視景仿真 ； Creator； Vega Prime； 虛擬 Design and Implementation of flight simulator visual simulation system Abstract With the increasingly high cost of flight training in urgent need of training institutions to a partial substitute for the actual flight training, flight simulator flight simulator training to effectively reduce the cost of flight training, flight training effect. Flight simulation is an important part of the flight simulator, flight visual simulation system, to establish not only to reduce its research and development costs and cycle, to reduce a variety of airframe internal fault, or lead to unforeseen plex flight environment the possibility of failure, but also to the flight crew to simulate the real 3D scene and flight information, provide a realistic flying effect and flight attitude, making training faster, safer and more proficient in a variety of flight operations equipment, the successful pletion a variety of mission operations in order to achieve the training objectives. In this paper, the demand on the basis of the analysis of flight simulation, the design of the flight simulator can be better to plete the flight simulation capabilities, providing a variety of flight training scenarios, contribute to the improvement of flight technology and flight experience. Based on the theory of flight simulation with visualization technology, and integrated use of a series of model construction, system operation, and modeldriven technology, Creator software for modeling and simulation, plete aircraft, the flight scene modeling, designbased flight of the Vega Prime environment visual simulation system, the dynamic online airplane flight movement for flight training, flight simulation environment. This system can create a virtual flight training environment, the pletion of the basic flight conditions, and offers a variety of flying scenes program, but we also have less control functions the shortings of single scene until the followup technical conditions are ripe to further improve and enhance . Key Words： Visual Simulation； Creator； Vega Prime； Virtual 目 錄 1 緒論 ................................................................................................................................... 1 引言 ........................................................................................................................ 1 研究目的及意義 .................................................................................................... 2 研究目標(biāo)及內(nèi)容 .................................................................................................... 3 2 總體設(shè)計(jì) ........................................................................................................................... 5 Vega Prime 開(kāi)發(fā)過(guò)程 .............................................................................................. 5 系統(tǒng)設(shè)計(jì)要求 ........................................................................................................ 6 三維視景仿真系統(tǒng)模塊結(jié)構(gòu)設(shè)計(jì) ........................................................................ 6 模型構(gòu)造模塊設(shè)計(jì) ..................................................................................... 7 界面設(shè)計(jì) ..................................................................................................... 8 飛行仿真場(chǎng)景模塊設(shè)計(jì) ............................................................................. 8 3 視景仿真建模技術(shù) ..........................................................................................................11 OpenFlight(*.flt)數(shù)據(jù)庫(kù)格式 .................................................................................11 建模過(guò)程中用到的若干技術(shù) .............................................................................. 12 LOD 技術(shù) ................................................................................................... 12 DOF 技術(shù) ................................................................................................... 13 包圍盒技術(shù) ............................................................................................... 14 飛機(jī)本體建模 ...................................................................................................... 14 建模的兩種方式 ....................................................................................... 14 飛機(jī)座艙建模 ...................................................................................................... 15 地形及建模 .......................................................................................................... 16 地形建模概述 ........................................................................................... 16 地形數(shù)據(jù)源 ............................................................................................... 16 地形生成過(guò)成中的一些技術(shù) ................................................................... 17 4 視景仿真系統(tǒng)的實(shí)現(xiàn) ..................................................................................................... 20 Vega Prime 應(yīng)用程序 ............................................................................................ 20 配置 Vega Prime 應(yīng)用程序 ....................................................................... 20 基于 Vega Prime 的應(yīng)用程序結(jié)構(gòu) ........................................................... 21 系統(tǒng)初始化配置 .......................................................