多普勒激光雷达近地面飞机尾涡反演方法优化  

Optimization of aircraft wake vortex inversion algorithm near ground based on Doppler lidar

作　　者：张容川 王筱晔 张洪玮 刘晓英 王希涛 秦胜光 尹嘉萍 王琪超 吴松华[1,3] Zhang Rongchuan;Wang Xiaoye;Zhang Hongwei;Liu Xiaoying;Wang Xitao;Qin Shengguang;Yin Jiaping;Wang Qichao;Wu Songhua(College of Marine Technology,Faculty of Information Science and Engineering,Ocean University of China,Qingdao 266100,China;Key Laboratory of Space Laser Information Transmission and Detection Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Laboratory for Regional Oceanography and Numerical Modeling,Laoshan Laboratory,Qingdao 266237,China;Qingdao Leice Transient Technology Co.,Ltd,Qingdao 266100,China)

机构地区：[1]中国海洋大学信息科学与工程学部海洋技术学院,山东青岛266100 [2]中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室,上海201800 [3]崂山实验室区域海洋动力学与数值模拟功能实验室,山东青岛266237 [4]青岛镭测创芯科技有限公司,山东青岛266100

出　　处：《红外与激光工程》2023年第11期94-106,共13页Infrared and Laser Engineering

基　　金：国家自然科学基金项目(42106182,61975191,41905022);山东省自然科学基金青年项目(ZR2021QD052)。

摘　　要：实时准确获取飞机尾涡的特征参数信息,将有利于在保持机场基础设施的情形下进一步提升机场吞吐量。相干多普勒激光雷达作为飞机尾涡的有效探测手段,可提供其位置与强度信息。针对飞机尾涡特征反演算法在近地面环境下出现的误识别及定位精度下降问题,通过采用区域聚焦的方法减少背景环境对识别精度的影响,并引入尾涡的旋转特征、对反演结果检验,以此提高结果的可靠性。针对扫描中尾涡的移动、扭曲或数据缺失引起的强度评估不准问题,通过尾涡速度分布校正和理想化飞机尾涡模型校正两步来提高强度反演精度。经成都双流国际机场观测数据验证,该优化算法的正确识别率提高2.8%,漏报率下降2.7%,虚警率下降20.86%。Objective Aircraft is one of the most important inventions in the early 20th century,which gave birth to the development of air transport industry and changed the transportation,economy,production and daily life of human beings.Subsequently,aviation safety issues have gradually become the focus of attention.The emergence of heavy aircraft,especially the emergence of B747-100,makes the aviation safety problems caused by aircraft wake vortex can not be ignored.Accurate identification of the position of the aircraft wake vortex core is the basis for dynamically reducing the wake vortex spacing.At present,the vortex core position extraction and vortex intensity evaluation based on coherent Doppler pulse lidar observation data have been realized with the algorithm.However,the interference of the background wind field and the need for calculation speed are major technical difficulties for the application of the existing wake vortex identification algorithm.In order to further improve the environmental adaptability and calculation accuracy of the wake vortex identification algorithm,this paper conducts corresponding research.Methods Aiming at the requirement of near real-time output of lidar wake vortex detection results and the problem of inaccurate vortex core positioning in the near-ground environment of existing algorithms,this paper optimizes the previous identification methods.By referring to the tangential velocity method and the concept of ROI(Regions Of Interest),the region is focused to reduce the introduction of interference.By referring to the radial wind speed method,the rotation characteristics of the wake vortex are introduced into the solution to improve the anti-interference ability of the algorithm.By referring to the fast identification method,the spectral width information is combined with the radial wind speed information to improve the accuracy of the vortex core location.The path integral method is used to reduce the influence of ground effect on the solution results.By referring to the optimizati

关 键 词：大气光学 飞机尾涡 激光雷达 航空安全 快速识别 

分 类 号：TN958[电子电信—信号与信息处理]