With the development of space technology, there is an increasing demand for spacecraft on-orbit servicing, such as on-orbit assembly. Relative navigation of spacecraft is a key technology in on-orbit servicing because it ensures the safe and accurate approach of the two spacecraft. Non-cooperative spacecraft means that there is no communication with it and therefore cannot get precise relative position and attitude from differential GNSS. The ground guidance using ground-based orbit determination technology can guide the two spacecraft to be close as 200m. However, when the relative distance is less than 200m, higher-precision relative navigation is required. Binocular cameras can provide relative position and attitude within close range, however, as the focal length of binocular cameras is usually small, they are not suitable for medium range navigation. Thus, the relative navigation in medium range, such as 200m to 10m, becomes a challenge as the distance scale is uncertain using monocular camera. To solve this problem, this paper proposes a relative position visual navigation algorithm based on deep learning technology using monocular cameras. The navigation algorithm uses YOLOv5 target detection technology to obtain the position of the spacecraft in the image, and then calculates the real relative position in space based on the pinhole camera model. The speed of the proposed algorithm can reach 10 FPS on the NVIDIA TX2 computing device, and the average relative position error is 5.16% at 200m-10m. The proposed algorithm has been successfully applied to an on-orbit visual navigation task and achieve fast and robust navigation result.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Non-cooperative Spacecraft Relative Navigation Based on Monocular Camera in Space On-orbit Servicing


    Contributors:
    Wu, Aodi (author) / Zhang, Shengyang (author) / Shu, Leizheng (author) / Si, Chaoming (author) / Wan, Xue (author)


    Publication date :

    2022-06-01


    Size :

    718495 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Robust monocular vision navigation for spacecraft on-orbit service

    Chun Jiang, / Wu, Yun-Hua / Lin-Lin Ge, et al. | IEEE | 2016


    In orbit servicing of spacecraft

    SECORD, L. / WHITE, J. | AIAA | 1972



    A Novel Angles-Only Relative Navigation Algorithm for Space Non-Cooperative Target On-Orbit Servicing (AAS 14-262)

    Gong, B. / Luo, J. / Yuan, J. et al. | British Library Conference Proceedings | 2014


    SPACECRAFT FOR SIMPLIFIED ON-ORBIT SERVICING

    PETRAKOVA ELENA VALEREVNA / FREYLEKHMAN STANISLAV ALEXANDROVICH | European Patent Office | 2021

    Free access