Abstract
Field observations for the wake vortices by Coherent Doppler Lidar (CDL) have been carried out at the Beijing Capital International Airport (BCIA) and Tianjin Binhai International Airport (TBIA) to investigate the wake vortices evolution characteristics and the near-ground effect. This paper introduces the dynamic wake vortices and atmospheric turbulence monitoring technique, successfully demonstrating that the CDL can capture the key characteristics of wake vortices in real-time, including wake vortices intensity, spatial-temporal evolution and so forth.
Highlights
Range Height Indicator (RHI) scanning mode is used with a fixed azimuth angle and varying elevation during the field experiment
The algorithm for extracting high resolution turbulence parameters using longitudinal structure function based on RHI mode has been described in detail by Smalikho et al [6]
To investigate the influence of turbulence on the aircraft wake vortices, we retrieve the height profiles of from Lidar data measured during 20 scans
Summary
Range Height Indicator (RHI) scanning mode is used with a fixed azimuth angle and varying elevation during the field experiment. The center of the pair of positive and negative radial velocity can roughly illustrate the core position of each wake vortex at height of 200 m. To derive wake vortices characterization in real time, the range bins of wake vortices are firstly determined based on Doppler spectrum width. In order to investigate the wake vortices evolution characteristics and the near ground effect, field observation of wake vortices utilizing CDL has been carried out at BCIA and TBIA since 2014. This paper gives a brief analysis of the dynamic wake vortices and atmospheric turbulence characteristics monitoring technique
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