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.


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    Title :

    On-board axial detection of wake vortices using a 2-m m LiDAR


    Contributors:
    Douxchamps, D. (author) / Lugan, S. (author) / Verschueren, Y. (author) / Mutuel, L. (author) / Macq, B. (author) / Chihara, K. (author)


    Publication date :

    2008-10-01


    Size :

    3599781 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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