摘要
随着空中交通流量不断增加,降低因流量增大而引起的空中交通碰撞风险至关重要,以此来保障航空运行安全,提高空域利用率。采用改进Event模型对同高度层交叉航路碰撞风险进行评估,将更符合航空器运行特点的拼接四棱锥碰撞盒代替原长方体碰撞盒,建立碰撞风险模型。通过计算改进前后碰撞盒面积之比,得到改进的交叉航路碰撞风险公式,其中,侧向重叠概率的计算中采用广义帕累托分布表示其侧向导航误差。最后将空客A320及波音737客机作为实例对所建模型进行验证,结果表明,改进后的拼接四棱锥碰撞盒面积为原长方体碰撞盒面积的54%,碰撞风险较改进前模型大大减少。模型所得风险值满足安全目标水平,结果精度更高,能更好地评估交叉航路碰撞风险。
With the increasing air traffic flow,it is important to reduce the risk of air traffic collision caused by the increasing flow to ensure the safety of aviation operation and improve the utilization of airspace.In this paper,we adopt the improved Event model to evaluate the collision risk of cross route at the same altitude level,and replace the original rectangular collision box with the collision box of the patchwork quadrilateral,which is more consistent with the characteristics of aircraft operation,to establish the collision risk model.By calculating the ratio of the collision box area before and after the improvement,the improved cross route collision risk formula is obtained,in which the generalized Pareto distribution is used in the calculation of the lateral overlap probability to represent its lateral navigation error.Finally,the Airbus A320 and Boeing 737 airliners are used as examples to validate the proposed model,and the results show that the improved collision box area of the spliced quadrilateral is 54% of the original rectangular collision box area,and the collision risk is greatly reduced compared with the model before the improvement.The risk value obtained from the model meets the safety target level and the results are more accurate,which can better evaluate the cross-airway collision risk.
作者
黄晋
焦瑶瑶
刘厚荣
李云飞
HUANG Jin;JIAO Yao-yao;LIU Hou-rong;LI Yun-fei(Civil Aviation Flight University of China,Guanghan 618000,China)
出处
《航空计算技术》
2023年第1期11-15,共5页
Aeronautical Computing Technique
基金
民航局安全能力项目资助(0242109)。
