Taking into account of the ground effect on aircraft wake vortices when evaluating their circulation from lidar measurements
I.N. Smalikho
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: когерентный доплеровский лидар, самолетные вихри, coherent Doppler lidar, aircraft wake vortices
Abstract
The previously developed algorithm for estimating the circulation of aircraft wake vortices from measurements by a Stream Line pulsed coherent Doppler lidar has been improved by using the model of a pair of aircraft vortices in the algorithm that takes into account the ground effect on the spatial dynamics and evolution of the vortices. In a numerical experiment, it was shown that an improved algorithm allows obtaining a result with high accuracy, while the approach used earlier overestimates the lidar assessment of vortex circulation by about 10%.
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