Spacecraft GNC & Autonomy

 

With the exponential growth in the number of satellites launched into space, developing the capability of autonomous spacecraft operation is a pressing need. At the same time, such autonomous operation can never happen without ensuring the safety under all possible errors and uncertainties associated with the operations. The spacecraft must be able to autonomously characterize such errors and uncertainties, make decisions, plan actions, and execute maneuvers while mitigating possible risks without relying on the commands from and communications with the ground operators. This research thrust develops techniques, algorithms, and tools for robust spacecraft guidance navigation control (GNC) and thereby enabling autonomous operations of spacecraft at distance, such as in cislunar space, around outer planets, and in proximity of asteroids/comets.

Relevant projects:

• Autonomous Navigation in Cislunar Space
• Safe, autonomous on-orbit satellite servicing with risk-aware 6DoF guidance
• Markov-Jump-based control for trajectory design robust to missed thrust Events
• Autonomous navigation for asteroid exploration

Relevant articles:

• Fault-Tolerant Feedback Control for Spacecraft Rendezvous using Markov Jump Model
  S. Shrivastava, K. Oguri
  AAS/AIAA Astrodynamics Specialist Conference, 2023
• Robust NRHO Station-keeping Planning with Maneuver Location Optimization under Operational Uncertainties
  N. Kumagai and K. Oguri
  AAS/AIAA Astrodynamics Specialist Conference, 2023
• Chance-Constrained Output-Feedback Control without History Feedback: Application to NRHO Stationkeeping
  D. Aleti, K. Oguri, and N. Kumagai
  AAS/AIAA Astrodynamics Specialist Conference, 2023
• Gravity Model Error Compensation for Accurate Earth Orbit Determination of Two Satellites using Relative Position Measurements Only
  O. F. Awad, M. R. Stoeckle, and K. Oguri
  AAS Guidance, Navigation, and Control conference, 2023
• Investigation on Autonomous Orbit Determination in Cislunar Space via GNSS and Horizon-based Measurements
  D.C.Qi and K.Oguri
  AAS/AIAA Space Flight Mechanics Meeting, 2023
• Robust Spacecraft Guidance around Small Bodies under Uncertainty: Stochastic Optimal Control Approach
  K. Oguri and J. W. McMahon
  AIAA Journal of Guidance, Control, and Dynamics (JGCD), 2021
• Solar Radiation Pressure--Based Orbit Control with Application to Small-Body Landing. 
  K. Oguri, J. W. McMahon
  AIAA Journal of Guidance, Control, and Dynamics (JGCD), 2020.