Journal of Astronomy and Space Sciences

  • 제41권2호
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  • Pages.61-78
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  • 2024
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  • 2093-5587(pISSN)
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  • 2093-1409(eISSN)
한국우주과학회 (The Korean Space Science Society)
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Design and Verification of Spacecraft Pose Estimation Algorithm using Deep Learning

  • 투고 : 2024.05.03
  • 심사 : 2024.05.22
  • 발행 : 2024.06.15
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초록

This study developed a real-time spacecraft pose estimation algorithm that combined a deep learning model and the least-squares method. Pose estimation in space is crucial for automatic rendezvous docking and inter-spacecraft communication. Owing to the difficulty in training deep learning models in space, we showed that actual experimental results could be predicted through software simulations on the ground. We integrated deep learning with nonlinear least squares (NLS) to predict the pose from a single spacecraft image in real time. We constructed a virtual environment capable of mass-producing synthetic images to train a deep learning model. This study proposed a method for training a deep learning model using pure synthetic images. Further, a visual-based real-time estimation system suitable for use in a flight testbed was constructed. Consequently, it was verified that the hardware experimental results could be predicted from software simulations with the same environment and relative distance. This study showed that a deep learning model trained using only synthetic images can be sufficiently applied to real images. Thus, this study proposed a real-time pose estimation software for automatic docking and demonstrated that the method constructed with only synthetic data was applicable in space.

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과제정보

This study was supported by the Challengeable Future Defense Technology Research and Development Program (Grant No. 912908601) of the Agency for Defense Development (2023).

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