动态连续下降进近路径生成与优化研究

Research on path generation and optimization of dynamic continuous descending approach

高效地规划安全的连续下降进近(CDA,continuous descending approach)运行路径能够有效提高民航运输效益。基于CDA受力平衡状态分析,结合飞机下降数据和下降速度剖面构建动态CDA路径生成模型进行水平和垂直安全间隔划分,用同心圆环结构表示某一高度层的下降空域,完成CDA路径生成结构的三维呈现并分析其特点;基于标准下降空域与终端区空域的差异区域构建路径范围筛选模型,用随机模拟CDA路径验证路径筛选模型的可行性,通过下降路径点规划完成CDA路径的筛选并进行下降转弯角度限制、飞机受力平衡状态约束和最短航段距离规定,最终得到2条最优CDA路径。由不同下降顶点(TOD,top of descent)对应的多条最优CDA路径,可实现多架飞机在同一终端区空域内的安全下降。

The benefit of civil aviation transportation can be improved by efficiently planning the safe continuous descending approach(CDA)operation path.Based on the analysis of CDA force balance state,along with the aircraft descent data and descent velocity profile,a dynamic CDA path generation model is constructed.The descent airspace is divided into horizontal and vertical intervals,and a certain height of the descent airspace is represented by a concentric ring structure to realize the 3D presentation of the CDA path generation model structure and to analyze the generation characteristics of the CDA path.On the basis of the difference region between standard descent airspace and terminal area descent airspace,a path range screening model is constructed,and its feasibility is verified by random simulation of CDA paths.The CDA path is screened by selecting descent path points.The optimal CDA paths are obtained through the restriction of the descent turning angle,the constraint of aircraft's force balance and the regulation of flight segment distance.Multiple optimal CDA paths can be obtained from different top of descent(TOD)points to achieve safe descent of multiple aircraft in the same terminal airspace.