Numerical Simulation for Wind Shear Detection With a Glide Path Scanning Algorithm Based on Wind LiDAR

To study the performance of the glide path scan wind shear alerting algorithm (GLYGA) for wind shear detection with wind LiDAR sensors, this paper constructed two types of simulated wind fields for wind shear detection experiments based on a MATLAB toolbox: uniform wind field and shear wind field. The uniform wind field is used to study the influence of the relative position between the wind LiDAR system and the glide path on the wind detection results; the shear wind field is used to study the effectiveness of the GLYGA. The shear wind field consists of four types: frontal, downburst, low-level jet and turbulence. The results show that both the distance from the wind LiDAR system to the runway and the angle between the laser beam and the glide path should be minimized to ensure better wind detection results while avoiding the scenario in which the laser beam runs perpendicular to the glide path; otherwise, the wind speed measured by LiDAR is 0, which will introduce great error. At the same time, the GLYGA can adequately identify the position and intensity of wind shear along the glide path of aircraft.