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作 者:陈霖 孙晓亮 盛一成 毕道明 刘骏 CHEN Lin;SUN Xiaoliang;SHENG Yicheng;BI Daoming;LIU Jun(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410000,China;Hunan Province Key Laboratory of Image Measurement and Vision Navigation,National University of Defense Technology,Changsha 410000,China;Zhuhai EMGO-TECH Technology Co.,Ltd.,Zhuhai 519000,China;Shenyang Aircraft Design and Research Institute,Shenyang 110035,China)
机构地区:[1]国防科技大学空天科学学院,湖南长沙410000 [2]国防科技大学图像测量与视觉导航湖南省重点实验室,湖南长沙410000 [3]珠海光恒科技有限公司,广东珠海519000 [4]沈阳飞机设计研究所,辽宁沈阳110035
出 处:《应用光学》2025年第1期129-136,共8页Journal of Applied Optics
基 金:国家自然科学基金(12272404)。
摘 要:飞机起降通道中风场三维信息对于飞行安全至关重要,但尚缺乏准确、高效的测量方法。针对这一问题,提出一种基于激光雷达和计算流体力学(computational fluid dynamics,CFD)模型的飞机起降通道风场测量方法,首先,建立覆盖典型场景的飞机起降通道的CFD流场模型库,并对模型进行本征正交分解(proper orthogonal decomposition,POD),接着,在实际测量应用中,采用测风激光雷达测量得到沿激光束方向若干采样点上的径向风速,并据此在模型库中搜索最佳匹配流场模型,利用径向风速测量结果修正最佳匹配模型的POD系数,重构得到修正后的CFD流场模型。实验结果表明,本文方法可实现飞机起降通道中风场三维信息的准确、高效测量,风速测量精度优于0.8 m·s^(-1)。The three-dimensional information of wind field in aircraft take-off and landing channels is crucial for aircraft safety,but still lacks an accurate and efficient measurement method.To address this problem,a LiDAR-based wind field measurement method was proposed,which established a computational fluid dynamics(CFD)flow field model library covering typical scenarios of aircraft takeoff and landing path,and performed proper orthogonal decomposition(POD)on the model.Then,in the actual measurement application,the radial wind speed at several sampling points along the direction of the laser beam was measured by the wind measurement lidar,and the best matching flow field model was searched in the model library accordingly.The POD coefficients of the best matching model were corrected by the results of radial wind speed measurements,and the modified CFD flow field model was reconstructed.The experimental results show that the proposed method can achieve accurate and efficient measurement of the three-dimensional information of wind field in aircraft take-off and landing channels,and the accuracy of the wind speed measurement is better than 0.8 m·s^(-1).
分 类 号:TN247[电子电信—物理电子学] TN256TN958.98
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