Scholar
Keidai Iiyama
Google Scholar ID: 84_oy1EAAAAJ
Ph.D. Candidate, Stanford University
Citations & Impact
Citations
258
H-index
8
i10-index
8
Publications
20
Co-authors
0
Publications
Resume (English only)
Academic Achievements
- Publication: 'Precise Positioning and Timekeeping in a Lunar Orbit via Terrestrial GPS Time-Differenced Carrier-Phase Measurements', NAVIGATION, 2024
- Paper on ionospheric/plasmaspheric delay mitigation won Best Presentation of the Session at ION GNSS+ 2025
- Publication: 'Satellite Ephemeris Parameterization Methods to Support Lunar PNT Services', NAVIGATION, 2024; Best Presentation at ION GNSS+ 2023
- Publication: 'Constellation Design and Staged Development for the Lunar Navigation Satellite System', ION GNSS+, 2025
- Manuscript: 'Satellite Autonomous Clock Fault Monitoring with Inter-Satellite Ranges Using Euclidean Distance Matrices' under review at NAVIGATION; Best Presentation at ION GNSS+ 2024
- Work cited by researchers at NASA, ESA, and JAXA, directly contributing to LunaNet development
Research Experience
- Ph.D. research at Stanford’s NAV Lab
- Contributing to LunaNet—a collaborative effort by NASA and international partners to provide lunar PNT and communication services
- Developing ODTS algorithms for lunar navigation satellites using weak terrestrial GNSS signals
- Designing compact ephemeris and almanac parameterizations for elliptical lunar orbits
- Creating a staged-deployment optimization framework for hybrid Walker constellations
- Designing autonomous clock fault detection algorithms using inter-satellite ranging
Co-authors