Yoke Yoon, Ph.D.
Passionate about leveraging my expertise in the space/satellite technology industry to provide superior technical and management consulting services that foster growth, sustainability and innovation for clients
Research Expertise
About
Publications
Navigating a large satellite constellation in the new space era: An operational perspective
Journal of Space Safety Engineering / Dec 01, 2023
Yoon, Y. T., Ghezzo, P., Hervieu, C., & Palomo, I. D.-A. (2023). Navigating a large satellite constellation in the new space era: An operational perspective. Journal of Space Safety Engineering, 10(4), 531–537. https://doi.org/10.1016/j.jsse.2023.10.006
Sensing Heavy Precipitation With GNSS Polarimetric Radio Occultations
Geophysical Research Letters / Jan 22, 2019
Cardellach, E., Oliveras, S., Rius, A., Tomás, S., Ao, C. O., Franklin, G. W., Iijima, B. A., Kuang, D., Meehan, T. K., Padullés, R., de la Torre Juárez, M., Turk, F. J., Hunt, D. C., Schreiner, W. S., Sokolovskiy, S. V., Van Hove, T., Weiss, J. P., Yoon, Y., Zeng, Z., … Cerezo, F. (2019). Sensing Heavy Precipitation With GNSS Polarimetric Radio Occultations. Geophysical Research Letters, 46(2), 1024–1031. Portico. https://doi.org/10.1029/2018gl080412
GPS clock correction estimation for near real-time orbit determination applications
Aerospace Science and Technology / Oct 01, 2009
Bock, H., Dach, R., Yoon, Y., & Montenbruck, O. (2009). GPS clock correction estimation for near real-time orbit determination applications. Aerospace Science and Technology, 13(7), 415–422. https://doi.org/10.1016/j.ast.2009.08.003
TerraSAR-X Precise Trajectory Estimation and Quality Assessment
IEEE Transactions on Geoscience and Remote Sensing / Jun 01, 2009
Yoon, Y. T., Eineder, M., Yague-Martinez, N., & Montenbruck, O. (2009). TerraSAR-X Precise Trajectory Estimation and Quality Assessment. IEEE Transactions on Geoscience and Remote Sensing, 47(6), 1859–1868. https://doi.org/10.1109/tgrs.2008.2006983
Antenna phase center calibration for precise positioning of LEO satellites
GPS Solutions / Jun 07, 2008
Montenbruck, O., Garcia-Fernandez, M., Yoon, Y., Schön, S., & Jäggi, A. (2008). Antenna phase center calibration for precise positioning of LEO satellites. GPS Solutions, 13(1), 23–34. https://doi.org/10.1007/s10291-008-0094-z
Tracking and orbit determination performance of the GRAS instrument on MetOp-A
GPS Solutions / Apr 09, 2008
Montenbruck, O., Andres, Y., Bock, H., van Helleputte, T., van den Ijssel, J., Loiselet, M., Marquardt, C., Silvestrin, P., Visser, P., & Yoon, Y. (2008). Tracking and orbit determination performance of the GRAS instrument on MetOp-A. GPS Solutions, 12(4), 289–299. https://doi.org/10.1007/s10291-008-0091-2
The Effects of GPS Carrier Phase Ambiguity Resolution on Jason-1
Marine Geodesy / Jul 01, 2004
YOON, Y. T., NEREM, S. R., WATKINS, M. M., HAINES, B. J., & KRUIZINGA, G. L. (2004). The Effects of GPS Carrier Phase Ambiguity Resolution on Jason-1. Marine Geodesy, 27(3–4), 773–787. https://doi.org/10.1080/01490410490889058
Improved elevation-change measurement of the southern Greenland ice sheet from satellite radar altimetry
IEEE Transactions on Geoscience and Remote Sensing / May 01, 2000
Davis, C. H., Kluever, C. A., Haines, B. J., Perez, C., & Yoon, Y. T. (2000). Improved elevation-change measurement of the southern Greenland ice sheet from satellite radar altimetry. IEEE Transactions on Geoscience and Remote Sensing, 38(3), 1367–1378. https://doi.org/10.1109/36.843031
Mechanism for hydrogen diffusion in amorphous silicon
Physical Review B / Jan 15, 1998
Biswas, R., Li, Q., Pan, B. C., & Yoon, Y. (1998). Mechanism for hydrogen diffusion in amorphous silicon. Physical Review B, 57(4), 2253–2256. https://doi.org/10.1103/physrevb.57.2253
Dangling-bond levels and structure relaxation in hydrogenated amorphous silicon
Physical Review B / Oct 15, 1997
Biswas, R., Li, Q., Yoon, Y., & Branz, H. M. (1997). Dangling-bond levels and structure relaxation in hydrogenated amorphous silicon. Physical Review B, 56(15), 9197–9200. https://doi.org/10.1103/physrevb.56.9197
Education
University of Colorado Boulder
Ph.D., Aerospace Engineering Sciences / August, 2004
University of Missouri
M.Sci., Mechanical and Aerospace Engineering / December, 1998
Iowa State University
B.Sci., Aerospace Engineering / December, 1996
Experience
NASA/Jet Propulsion Laboratory
Visiting Scientist / June, 2002 — August, 2002
Studied the significance of integer GPS carrier phase ambiguity resolution technique to a single low Earth orbiting satellite in an effort to improve on the positioning accuracy using a Square Root Information Filter (SRIF) based software
German Space Operations Center
GPS Research Scientist and Flight Dynamics Analyst / August, 2004 — March, 2008
Performed feasibility studies and designed satellite orbit determination system for ESA Sentinel-3 satellite mission. Was the sole responsible for all real-time operational positioning research and analysis, developed software tools for product validation, supported flight dynamics monitoring, and calibrated satellite maneuvers for mission analysis and planning.
Deimos S.L.U.
Senior Engineer and Technical Project Manager / April, 2008 — December, 2010
Led the development of real-time navigation software for a satellite mission to Mars, designed a GNSS orbit and clock determination software prototype, implemented an Unscented Kalman filter for satellite navigation, supervised engineers in building a navigation simulation platform, and supported the management team in technical proposal development.
Positim U.G. at EUMETSAT
Low Earth Orbit Precise Orbit Determination Specialist / January, 2011 — June, 2016
Responsible for introducing improvements to operational precise point estimation (PPE) system/engine, developing a multi-mission precise PPE system architecture, maintaining software tools for monitoring and GNSS data analysis, collaborating with satellite missions for accuracy improvements, supervising software development for file management, assessing satellite maneuver calibration impact, participating in calibration activities, leading receiver performance assessments, and presenting analysis results at conferences and workshops.
Positim U.G.
Satellite Navigation Consultant / July, 2016 — November, 2016
Studied the impact of LEO satellite GPS data quality on a combined GPS and LEO precise positioning solution.
University Corporation for Atmospheric Research (UCAR)
Project Scientist II / November, 2016 — June, 2019
Conducted research on GNSS-based precise positioning estimation for LEO satellites, provided technical expertise to science teams, developed and maintained GNSS software tools, collaborated with external organizations, improved system functionality, conducted software tests, enhanced post-processing systems, led receiver performance assessments, investigated machine learning applications, and provided training on the PPE system.
Hemisphere GNSS
Precise GNSS R&D Network Manager / June, 2019 — August, 2021
Responsible for planning, organizing, and directing engineering developments in GNSS positioning and timing estimation, leading an engineering team in software development, managing project collaborations and contracts, delivering project plans and technical reports, overseeing software development tools, transitioning to Gitlab for version control, providing technical expertise in navigation, conducting root cause analysis, documenting system and software requirements, and managing technical staff hiring and training.
OneWeb
Director, Flight Dynamics Engineering / September, 2021 — December, 2023
Directed flight dynamics operations, managed satellite maneuver planning and monitoring, oversaw the implementation of operational procedures, led a restructuring of operational documents, supervised personnel in GPS and orbit modeling, supported space situational awareness efforts, developed project management processes, managed external contracts, recruited and retained personnel, conducted staff evaluations, led technical discussions, contributed to calibration campaigns, and supported technology development for OneWeb's satellites and PNT activities.
GlobaNav Solutions LLC
Founder and Principal Consultant / January, 2024 — Present
Deliver expert consultation services in technical analysis, software development and management for precision location and navigation techniques for space based missions, GNSS, LEO positioning, navigation and timing (PNT), space and ground systems requirements definition, architecture implementation, (sub-)system verification and validation, early phase proof-of-concept satellite mission studies, as well as sub-systems engineering.
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