rootbrowseIAC-21B2session 77. Advances in Space-based Navigation TechnologiesPapers2. Orbit determination and time synchronisation in lunar orbit with GNSS - Lunar Pathfinder experiment5. Crater-based Autonomous Position Estimation in Planetary Missions by deep learning8. Software-Defined Multi-Lateration tracking for near-space, suborbital and space vehicles: development of the STRAINS Experiment1003. Dual EKF-Based Collaborative Observation and Attitude Determination for a Tumbling Non-cooperative Space Target1004. Dynamic recursive optimization for optical navigation feature selection in asteroid landing1006. Parallel State Estimation under Flexible Connections in Small Celestial Body Landings1009. Whole MTO orbit self-adaptive tracking method based on FPGA resource restricted platform