In order to better understand pretactical phase flow management with the flight plan centralized processing at its core, based on the flight plan centralized processing system and track-based operation, the aircraft’s 4D trajectory planning challenges require a deeper level of analysis. Firstly, through establishing a flight performance prediction model, in which the flight plan data is extracted and the time when an aircraft passed a specified waypoint is calculated, a 4D flight prediction can be derived. Secondly, the air traffic flow of the waypoint is calculated, and a converging point along a flight route is selected. Through adjusting the time and speed of the aircraft passing this point, conflict between aircraft is avoided. Finally, the flight is verified by CCA1532, with the connecting flight plan centralized processing center set in line with the company’s requirements. The results demonstrate that according to flight plans, the 4D trajectory of the aircraft can be predicted with the nearest minute and second, and the flow of a total of 20 aircraft within one hour before and after the passage of CCA1532 at key point WADUK can be calculated. When there is a conflict of 88 s between the convergence point and flight B, the speed of B aircraft is adjusted from 789 km/h to 778 km/h, and the time of passing the WADUK point is increased by 7 s, thereby realizing the conflict-free trajectory planning of the two flights.

中文翻译：

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飞行前轨迹规划的防撞集中式算法

为了更好地理解以飞行计划集中处理为核心的战术阶段流程管理，基于飞行计划集中处理系统和基于轨迹的操作，飞机的4D轨迹规划挑战需要更深层次的分析。首先，通过建立飞行性能预测模型，在该模型中提取飞行计划数据并计算飞机通过指定航路点的时间，可以得出4D飞行预测。其次，计算航路点的空中交通流量，并选择沿飞行路线的会聚点。通过调整飞机通过这一点的时间和速度，可以避免飞机之间的冲突。最后，航班已由CCA1532验证，符合公司要求的转机计划集中处理中心。结果表明，根据飞行计划，飞机的4D轨迹可以在最接近的一分钟和一秒内预测，并且CCA1532在关键点WADUK起飞前后一小时内总共有20架飞机的流量可以计算。当会聚点与B航班之间发生88 s的冲突时，B飞机的速度从789 km / h调整为778 km / h，通过WADUK点的时间增加了7 s，从而实现了两次飞行的无冲突轨迹规划。并可以计算出CCA1532在关键WADUK起飞前后一小时内总共20架飞机的流量。当会聚点与B航班之间发生88 s的冲突时，B飞机的速度从789 km / h调整为778 km / h，通过WADUK点的时间增加了7 s，从而实现了两次飞行的无冲突轨迹规划。并可以计算出CCA1532在关键WADUK起飞前后一小时内总共20架飞机的流量。当会聚点与B航班之间发生88 s的冲突时，B飞机的速度从789 km / h调整为778 km / h，通过WADUK点的时间增加了7 s，从而实现了两次飞行的无冲突轨迹规划。