终端区航迹簇的中心航迹提取方法研究  

Research on Central Trajectory Extraction of Trajectory Cluster in Terminal Area

作　　者：赵元棣[1,2] 孙禾[2] 王洁宁[2] 李桃[3] 

机构地区：[1]中国民航大学天津市空管运行规划与安全技术重点实验室,天津 300300 [2]中国民航大学空中交通管理研究基地,天津300300 [3]中国民航大学图书馆,天津300300

出　　处：《图学学报》2014年第3期379-386,共8页Journal of Graphics

基　　金：国家自然科学基金重点资助项目(61039001);中央高校基本科研业务费专项资金资助项目(ZXH2012N004,ZXH2012D002);中国民航大学科研启动基金(2012QD02X)

摘　　要：为了有助于飞行计划的准确制定和管制员工作负荷的减轻,提出了一种基于计算几何的中心航迹提取方法。首先由雷达航迹数据生成三维点云模型,然后沿飞行方向对原始点云进行自适应采样,接下来利用采样得到的代表点集建立图结构并进行优化,最后先后通过均匀化处理以及光滑处理,生成最终的中心航迹曲线。真实数据的实验结果表明:该方法能够准确地提取终端区航迹簇的中心航迹,并有效识别其特征点,同时本文方法具有一定的鲁棒性。In order to create a flight plan precisely and reduce the overload of controller, a novel method of central trajectory extraction based on computational geometry is proposed. Firstly, a 3D point cloud model is generated from the radar data, and then a set of sampling points is calculated through an adaptive sampling method along the flight direction. The graph which is established from the sampling points is optimized in the next step. Finally, the central trajectory curve is generated by uniformization and smooth processings successively. Experiments on real data demonstrate that the proposed method can accurately extract the central trajectory of trajectory cluster in terminal area, and recognize the feature points efficiently. Meanwhile, the proposed method is robust.

关 键 词：终端区 航迹簇 中心航迹提取 计算几何 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]