Aircraft wake vortex is a low-speed, low-pressure region generated by the airflow circulating around the wings and fuselage during flight, often appearing as a long, trailing tail extending backward over a significant distance. The intensity of the wake vortex is related to the lift produced by the wings, with stronger lift resulting in stronger vortices. During the landing and takeoff phases, the wake vortex generated by an aircraft can pose potential hazards to aircraft following behind. Therefore, the observation and study of near-ground aircraft wake vortices are crucial for the operational efficiency of airports, aircraft approach procedures, and landing sequence arrangements.
Based on 3D scanning Doppler wind lidar, the wake vortex characteristics are inverted and analyzed, including rapid localization of vortex core positions, precise calculation and correction of vortex circulation, dynamic display of wake vortex evolution trajectories, and assessment of near-ground effects of wake vortices.
Real-time detection and identification of wake vortices can be achieved based on the positive and negative wind speed characteristics derived from the radial wind speed, and the spectral broadening features in the spectral width.
High-precision visual inversion and accurate analysis capabilities for the wake vortex evolution process.
Aircraft wake vortex observation experiments and applications have been conducted at multiple large airports in China, accumulating tens of thousands of real-world measurement data.
