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A Vision-Based Automatic Landing Method for Fixed-Wing UAVs

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Abstract

In this paper, a vision-based landing system for small-size fixed-wing unmanned aerial vehicles (UAVs) is presented. Since a single GPS without a differential correction typically provide position accuracy of at most a few meters, an airplane equipped with a single GPS only is not guaranteed to land at a designated location with a sufficient accuracy. Therefore, a visual servoing algorithm is proposed to improve the accuracy of landing. In this scheme, the airplane is controlled to fly into the visual marker by directly feeding back the pitch and yaw deviation angles sensed by the forward-looking camera during the terminal landing phase. The visual marker is a monotone hemispherical airbag, which serves as the arresting device while providing a strong and yet passive visual cue for the vision system. The airbag is detected by using color- and moment-based target detection methods. The proposed idea was tested in a series of experiments using a blended wing-body airplane and proven to be viable for landing of small fixed-wing UAVs.

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Authors and Affiliations

  1. Department of Aerospace Engineering, KAIST, Daejeon, South Korea

    Sungsik Huh & David Hyunchul Shim

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  1. Sungsik Huh
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  2. David Hyunchul Shim
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Correspondence to Sungsik Huh.

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Huh, S., Shim, D.H. A Vision-Based Automatic Landing Method for Fixed-Wing UAVs. J Intell Robot Syst 57, 217–231 (2010). https://doi.org/10.1007/s10846-009-9382-2

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  • DOI: https://doi.org/10.1007/s10846-009-9382-2

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