针对尾涡危险区域的研究可以有效避免后机尾涡危险遭遇事件的发生，提出了一种基于激光雷达探测数据的尾涡危险区计算方法。根据雷达实测数据反演飞机尾涡的演化轨迹和速度环量；基于后机遭遇前机尾涡的空气动力学响应构建滚转力矩系数模型；考虑尾涡在实际场景下的演化情况，结合反演得到的尾涡特征参数，计算飞机遭遇尾涡时的滚转力矩并计算尾涡危险区。结果表明：基于激光雷达探测数据反演尾涡特征参数，左涡和右涡的位置、环量并不一致，据此结合滚转力矩系数模型计算得到的整体危险区域也具有不对称性，当单涡更稳定时，对应的危险区域也更大。以B738为后机，选取某一尾涡探测片段验证，对于涡心坐标位置为左涡（390 m，8.61°），右涡（435 m，8.85°）的尾涡，左涡、右涡的环量分别为256.83 m²/s和223.35 m²/s，左涡相对右涡实际划设的危险区覆盖范围更大，因此后机与前机左右尾涡的安全阈值区域不同，可据此对横向间隔做出不同调整，因此所提方法有利于为分析后机遭遇安全性、缩短尾流间隔提出重要参考。

Aiming at the study of wake vortex hazard zone, which can effectively avoid the occurrence of rear wake vortex danger encounter events, a wake vortex danger area method based on lidar detection data was proposed. According to the measured data of Li-DAR, the evolution trajectory and velocity loop of the aircraft wake vortex were inverted. Based on the aerodynamic response of the rear engine to the front tail vortex, a rolling torque coefficient model was constructed. Considering the evolution of the tail vortex in the actual scene, combined with the characteristic parameters of the tail vortex obtained by inversion, the rolling torque of the aircraft when encountering the tail vortex was calculated and the tail vortex danger zone was estimated. The results show that the tail vortex characteristic parameters are obtained based on lidar detection data inversion, and the position, height and ring amount of the left vortex and the right vortex are not consistent. The danger zone calculated by combining the rolling torque coefficient model also has asymmetry, and when the ring amount of the single vortex is larger, the corresponding danger zone is also larger. For a tail vortex with a left vortex (390 m, 8.61°), right vortex (435 m, 8.85°) at the coordinate position. The ring quantities of the left vortex and the right vortex are 256.83 m²/s and 223.35 m²/s respectively. The actual danger zone of the right vortex has a larger range, so the interval between the rear machine and the front machine can be adjusted differently, which is conducive to putting forward an important reference for analyzing the safety of the rear machine and shortening the wake interval.