Alexander Frias

York University, Canada
Department of Earth and Space Science and Engineering

Scopus ID:  56732700300
Researcher ID: FZT-3789-2022
Scholar profile: link

Selected Publications:

  1. Diriker, F. K., Frias, A., Keum, K. H., & Lee, R. S. K. (2021). Improved Accuracy of a Single-Slit Digital Sun Sensor Design for CubeSat Application Using Sub-Pixel Interpolation. Sensors, 21(4), 1472. doi:

  2. Park, W., Lee, J., Kim, K.-C., Lee, J., Park, K., Miyashita, Y., Sohn, J., Park, J., Kwak, Y.-S., Hwang, J., Frias, A., Kim, J., Yi, Y. (2021). Operational Dst index prediction model based on combination of artificial neural network and empirical model. Journal of Space Weather and Space Climate, 11, 38. doi:

  3. Frias, A., de Ruiter, A. H. J., Kumar, K. D. (2019). Velocity-free spacecraft attitude stabilization using two control torques. Automatica, 109, 108553. doi:

  4. Frias, A., de Ruiter, A. H. J., Kumar, K. D. (2018). Velocity-Free Attitude Stabilization of a Nadir-Pointing Underactuated Rigid Spacecraft. Journal of Guidance, Control, and Dynamics, 41 (5), 1068–1082. doi:

  5. Frias, A., Kumar, K. , De Ruiter, A. (2014). Robust nonlinear control of underactuated spacecraft using a single thruster. Proceedings of the International Astronautical Congress, IAC, 7,4836–4844.

  6. Frias, A., Eng, B. (2012). Modeling and control of spacecraft systems with coupled orbital and attitude dynamics (Doctoral dissertation, Master’s thesis, Ryerson University, Toronto, Ontario, Canada). Available at:

  7. Frias, A. (2019). Nonlinear attitude control of underactuated spacecraft. Available at: