Lagrangian coherent structure analysis of terminal winds detected by lidar. Part II: Structure evolution and comparison with flight data
Lagrangian coherent structure analysis of terminal winds detected by lidar. Part II: Structure evolution and comparison with flight data
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激光雷达探测到的末端风的拉格朗日相干结构分析。
DOI：
10.1175/2011jamc2689.1
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发表时间：
2011
影响因子：
3
通讯作者：
G. Haller
中科院分区：
文献类型：
--
作者：
Wenbo Tang;P. Chan;G. Haller
利用位于香港国际机场的相干多普勒光探测和测距（激光雷达）系统的观测数据，提取了与着陆飞机飞行轨迹相交的拉格朗日相干结构（LCS）。他们研究LCS的时间演变，并将其与飞机进场过程中收集的机载风切变和高度数据进行比较。他们的结果显示，从激光雷达数据中提取的LCS与着陆飞机经历的上升气流和下降气流之间具有良好的相关性。总体而言，LCS分析显示出作为一个强大的实时工具来检测影响飞机交通的非定常流结构的承诺。
AbstractUsing observational data from coherent Doppler light detection and ranging (lidar) systems situated at the Hong Kong International Airport (HKIA), the authors extract Lagrangian coherent structures (LCS) intersecting the flight path of landing aircraft. They study the time evolution of LCS and compare them with onboard wind shear and altitude data collected during airplane approaches. Their results show good correlation between LCS extracted from the lidar data and updrafts and downdrafts experienced by landing aircraft. Overall, LCS analysis shows promise as a robust real-time tool to detect unsteady flow structures that impact airplane traffic.