论文部分内容阅读
借鉴飞机沿航迹误差服从正态分布这一经典结论,对飞机沿航迹方向运动进行建模,根据同高度两架飞机的相遇几何约束,建立适当的直角坐标系表示两架飞机的位置,构造椭圆形冲突区域,并在此基础上提出了一种针对同高度两条交叉航路的中期冲突探测的概率型算法,然后结合仿真曲线分析了各影响因素与冲突概率之间的关系。结果表明:该算法对于15~20 min预测时间范围的冲突探测可以取得良好地效果;相同条件下,两条航线夹角越大,探测精度越高。同时与以往的随机化算法相比,该算法具有计算方法简单、计算速度快、计算结果精度高等优点。最后将该算法推广至可适用于由多个航路段组成的航路之间的冲突探测,从而使该算法具有更广泛的应用性。
Drawing on the classical conclusion that the trajectory follows the normal distribution of trajectory error, the airplane is modeled along the trajectory. According to the geometric constraints of two planes at the same altitude, an appropriate Cartesian coordinate system is established to represent the positions of the two aircraft. Based on this, a probabilistic algorithm for medium-term conflict detection of two intersecting routes with the same height is proposed. Then, the relationship between each influencing factor and the collision probability is analyzed based on simulation curves. The results show that the proposed algorithm can achieve good results in collision detection in the predicted time range from 15 to 20 minutes. Under the same conditions, the larger the included angle between two airlines, the higher the detection accuracy. Compared with the previous randomization algorithm, this algorithm has the advantages of simple calculation method, fast calculation speed and high accuracy of calculation results. At last, the algorithm is generalized to the collision detection which is suitable for the route which consists of several route sections, so that the algorithm has wider applicability.