Aircraft takeoff and landing path wind field measurement based on lidar and CFD model

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.