面向飞行器可视导航的复杂空地环境动态3维表示模型

针对飞行器可视导航中复杂空地环境时空要素统一精准表示的难题，本文提出了面向飞行器可视导航的复杂空地环境动态3维表示的GIS数据模型和相应的时刻数据存储结构，并用UML图进行了描述。该模型综合考虑了复杂空地环境要素多维、动态、边界模糊等特点，刻画了多维动态时空数据在空间、时间、尺度、语义四个方面的特征及其相互关系。最后，以某机场的空地环境数据的组织、分析和可视化为例，验证了该模型的实用性。

Dynamic 3D Representation Model of Complex Air-ground Environment for Visual Aircraft Navigation

Aiming at a unified,accurate and efficient presentation of the complex air-ground environment for visual aircraft navigation,a dynamic 3D GIS data model and related spatio-temporal data structures are proposed using UML.Taking into account the multi-dimensional,dynamical characteristics and fuzzy boundary of environmental elements,this model systematically depicts the geometric,temporal,scale and semantic features of the complex air-ground environment and their relationships.Simulation experiments illustrate the usefulness and validity of the proposed data model,this model facilitates comprehensive spatio-temporal data analysis for the optimal flight path planning.