Airport Airfield Management Simulation System Research And Implementation

In current society.the air plane has evolved to be the indispensable transportation implement.As the most important infrastructure for the air transport industry.construction planning and management level of the airports reflect the level of development of a country and regional air transport.The airfield management includes airport clearance management, the maintenance of airport visual aids to navigation and bird hazard prevention and control.The airport airfield management simulation system is a novel menas of airport airfield management training.It can be realized in the airfield roaming and interact with airfield management objects,evaluate the airport clearance conditions through clearance analysis.The main work of this thesis includes:1)This thesis proides the detailed calculation method for the areas of civil aerodrome obstacle free space that based on the definition of obstacle’s restriction area which is composed of approach,transition,inside horizon,taper,inside approach.inside transition,retake-off and taking off-asscending components after researching on "Skills and criterions of Aviation District in Civil airport"(MH,5001-2006).This calculation method achieves the formula for calculating the vertex of obstacle free zones after combining user-difined gemerty coordinating system and builds the index mathematic model for civil aerodrome.analysis of the aerodrome obstacle free space management objects’elevation based on the formula.2)In the aspect of three-dimensional volume data generation,a rapid solid voxelization zlgorithm based on triangular mesh model is relized in this thisis.The algorithm can be realized in two steps:the first step is surface voxelization,dividing the triangular faces of triangular mesh model into some other new minor triangle chip which is sufficiently small by using a simple and non-recursive method,then voxelizing these triangle vertexes,which can convert surface voxelization into points voxelization;the second step is internal voxelization.Combined with the edge flag filling algorithm suitable for expression of the airfield management objects rule body but lack of a miscarriage of justice may occur at some extremal places,an improved algorithm based on the depth buffer principle of edge flag filled internal voxelization are proposed.The internal voxel can be recognized by using the six directional projection of the voxel model which can be obtained by extending the Z-buffer algorithm.the number of voxel which needs recognizing can be reduced by combining with the edge marking fill algorithm not only can efficiently generate voxel model whichis approached to original model.but also have high time efficienty.3) The airfield management simulation virtual environment based on Delta3D simulation engine is designed and implemented,which provides an effective method for airfield management training.System structure and scene building process is introduced in detail.The power distribution cabinet siulation based on electrical model is designed to emulate the fault and relay protection.A finite state automata model of diesel engine is proposed.According to the first-order equivalent circuit of battery and engine oil consumption,the virtual operation of diesel engine based on physical model is designed.The virtual maintenance of airfield lighting based on device running logical is achieved and different observation modes are defined according to the maintenance procedures,simulating different working status of the airfield lighting.The airfield management simulation is implemented and the application verification is achieved.