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针对自由飞行的安全性,对自由飞行环境下的碰撞风险进行研究.首先,通过对飞机在航迹上任意时刻的三维坐标的研究,建立了自由飞行环境下的碰撞风险安全评估模型.然后,在三维坐标系的基础上加入了时间变量,推导出纵向重叠概率计算公式.分析自动相关监视(ADS)对纵向碰撞风险影响,据此建立了自由飞行环境下基于ADS性能的纵向碰撞风险评估模型.最后,通过实例对纵向碰撞风险进行了安全评估计算,计算结果符合实际情况,评估模型是可行的.并在此基础上提出了自由飞行环境下的碰撞风险安全评估的未来研究方向.
Aiming at the safety of free flight, this paper studies the collision risk in free flight environment.Firstly, through the research on the three-dimensional coordinates of the aircraft at any moment in the flight path, a collision risk safety assessment model in free flight environment is established.Then, Based on the three-dimensional coordinate system, the time variable is added to derive the calculation formula of longitudinal overlap probability.Analysis of the impact of ADS on the longitudinal collision risk, and based on which, the risk assessment model of longitudinal collision based on ADS performance is established in free flight environment Finally, the safety risk assessment and calculation of the vertical collision risk are carried out through examples, the calculation results are in accordance with the actual conditions and the evaluation model is feasible. Based on this, the future research direction of the safety assessment of the collision risk in free flight environment is proposed.