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图学学报
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终端区航迹簇的中心航迹提取方法研究
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#br# 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#br# 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#br# 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:#br# 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#br# 一定的鲁棒性。#br# 关 键 词:终端区;航迹簇;中心航迹提取;计算几何
esearch on Central Trajectory Extraction of Trajectory Cluster in Terminal Area
Abstract: In order to create a flight plan precisely and reduce the overload of controller, a#br# novel method of central trajectory extraction based on computational geometry is proposed.#br# Firstly, a 3D point cloud model is generated from the radar data, and then a set of sampling points#br# is calculated through an adaptive sampling method along the flight direction. The graph which is#br# established from the sampling points is optimized in the next step. Finally, the central trajectory#br# curve is generated by uniformization and smooth processings successively. Experiments on real#br# data demonstrate that the proposed method can accurately extract the central trajectory of#br# trajectory cluster in terminal area, and recognize the feature points efficiently. Meanwhile, the#br# proposed method is robust.#br# Key words: terminal area; trajectory cluster; central trajectory extraction; computational#br# geometry
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