面向飞行器可视导航的复杂空地环境动态三维表示模型

摘要

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.%针对飞行器可视导航中复杂空地环境时空要素统一、精准和高效表示的难题,提出面向飞行器可视导航的复杂空地环境动态三维表示的GIS数据模型和相应的时空数据存储结构,并用UML图进行描述。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,刻画多维动态时空数据在空间、时间、尺度和语义4个方面的特征及其相互关系,有利于复杂机场环境时空数据的综合分析,支撑飞行路径的动态优化选择。以某机场空地环境的模拟数据为例,仿真验证该模型的实用性与有效性。