基于数字地球的QAR数据飞行航径复现研究

Research on QAR Data Flight Path Reconstruction Based on Digital Earth

为了更好的实现飞行品质监控和飞行事后分析,本文设计了可将QAR飞行数据关联到响应的地理空间和时间序列的显示平台。针对数据精度有限,提出了基于地理特征点的积分航迹分段修正模型,同时复现飞机实际垂直剖面时对气压高度进行了温度修正。以某航班实际QAR数据为例,通过数据筛选和仿真计算,并对数字地球进行二次开发,复现的飞行航径与时间空间相互关联,从而为飞行品质监控、安全评估以及事故/事故征候调查提供了技术支持。

In order to better realize flight operational quality and post-flight analysis,this paper designs a display platform that can associate flight data with response geospatial and time series.In view of the limited accuracy of QAR recorded data,a segmented correction model of integral trajectory based on geographical feature points was proposed,and the temperature correction of pressure altitude was carried out when the actual aircraft vertical profile was reconstruction.Taking the actual QAR data of a flight as an example,through data screening and simulation calculation,and the secondary development of digital earth,the reconstruction flight path is correlated with time and space,so as to provide technical support for flight operational quality,safety evaluation and accident/incident investigation.