论文部分内容阅读
考虑到机场周围障碍物对飞行安全的影响,文章提出一种基于World Wind的障碍物评估方法。该方法根据机场环境和飞行程序设计要求建立OAS面数学模型,对给定的数据进行分析计算;对World Wind进行二次开发,实现障碍物与OAS面关系的三维可视化,结合客观数据分析和三维仿真结果给出评估报告;并分析障碍物对导航信号遮蔽影响,完成对障碍物的进一步评估。通过对天津机场障碍物验证分析表明,该方法对障碍物评估计算结果与ICAO使用的专业软件结果一致,并且更便捷直观,同时通过研究障碍物对某DME台信号的遮挡影响,结果证明能够准确地计算DME信号近距有效覆盖范围。
Taking into account the impact of obstacles around the airport on flight safety, this paper presents a method of obstacle assessment based on World Wind. The method establishes the mathematical model of the OAS surface according to the requirements of the airport environment and the flight program, and analyzes and calculates the given data. The second development of World Wind can realize the 3D visualization of the obstacle and the OAS surface. Combined with objective data analysis and 3D The simulation results give the evaluation report; and analyze the influence of the obstacle on the shielding of the navigation signal to complete the further assessment of the obstacle. Through the airport obstacle verification analysis of Tianjin airport, it shows that the calculated result of obstacle evaluation is consistent with the result of professional software used by ICAO, and more convenient and intuitive. At the same time, the shielding effect of obstacles on a DME station signal is proved, and the result proves to be accurate Calculate the DME signal near the effective coverage.