基于改进Event模型的航路垂直方向碰撞研究

Research on Route Vertical Collision Based on Improved Event Model

为进一步提高平行航路相邻高度层碰撞风险模型计算精确度,提高空域利用率,提出基于改进Event模型的垂直方向碰撞风险研究方法。用两个拼接四棱锥碰撞盒代替原长方体以及椭球体碰撞盒,计算改进前后扩展碰撞盒面积,得出面积比值,建立新的碰撞风险计算公式。以A321-200客机和B737-800客机为算例,将其相关的碰撞参数代入MATLAB中进行仿真验证,对比分析三种模型的碰撞风险。结果表明:改进之后的拼接四棱锥模型碰撞风险为原长方体模型碰撞风险的13%,为原椭球体模型碰撞风险的65%。模型精确度较高,能够更好的对航空器的碰撞风险进行评估。

In order to further improve the calculation accuracy of collision risk model at adjacent altitudes of parallel routes and improve airspace utilization,a vertical collision risk research method based on improved event model is proposed.Two spliced pyramid collision boxes are used to replace the original cuboid and ellipsoid collision boxes,the expanded collision box area before and after the improvement is calculated,the area ratio is obtained and a new calculation formula of collision risk is established.Taking A321200 aircraft and B737-800 aircraft as examples,the relevant collision parameters are substituted into MATLAB for simulation verification,and the collision risk values of the three models are compared and analyzed.The results show that the collision risk of the improved splicing pyramid model is 13%to that of the original cuboid model and 65%to that of the original ellipsoid model.The model has high accuracy and can better evaluate the collision risk of aircraft in the future.