RRVPE: A Robust and Real-Time Visual-Inertial-GNSS Pose Estimator for Aerial Robot NavigationChi ZHANG, Zhong YANG, Hao XU, Luwei LIAO, Tang ZHU, Guotao LI, Xin YANG and Qiuyan ZHANGWuhan Univ. J. Nat. Sci., 28 1 (2023) 20-28DOI: https://doi.org/10.1051/wujns/2023281020