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Department of Atmospheric Science

Tues., Jul. 18, 3:40 pm, EN6085

Characteristics and Detection of Aircraft Wake Vortex

Dr. Li Jianbin

National University of Defense Technology


Aircraft wake vortex is a pair of strong counter-rotating vortices, and it has attracted much attention in aviation safety area. In the past years we studied the dynamics and scattering of wake vortices, and the main verdicts are: the radar scattering of wake vortices in clear air is relatively weak, but the Lidar scattering is detectable due to the presence of particles like aerosols; the contrail and wet weather wake vortices have relatively good radar reflectivity, which is caused by the strong scattering of ice crystal and precipitation droplets. Then, joint detection scheme of Lidar and radar for wake vortex, as well as some parameter-retrieval algorithms, have been developed.

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