This paper describes the first successful attempt to detect wake vortices axially using an on-board infrared pulsed Doppler LiDAR (light detection and ranging) is described. On-board axial detection is more complex than the classic ground-based tangential approach, because the axial air speed in vortices is low and the atmospheric particle density is reduced, yielding a poorer SNR. To provide meaningful results in such unfavorable conditions we have developed a new flexible signal processing method based on a two-primitive model fitting the spectrum of the Doppler return. This new spectral estimation successfully detects wake vortices with an admissible SNR that is lower than other on-board state-of-the-art approaches. It was validated through flight tests.
On-board axial detection of wake vortices using a 2-m m LiDAR
IEEE Transactions on Aerospace and Electronic Systems ; 44 , 4 ; 1276-1290
2008-10-01
3599781 byte
Article (Journal)
Electronic Resource
English
On-Board Axial Detection of Wake Vortices using a 2-µm LiDAR
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