| Acronym | Meaning |
| SPS | Solar Power Satellite |
| DAO | Dominion Astrophysical Observatory |
| TKSC | Tsukuba Space Center |
| RME | Radiation Monitoring Experiment |
| XUV | Extreme Ultraviolet |
| HPOTP | High Pressure Oxidizer Turbopump |
| CRL | Communication Research Lab |
| HAINS | High Accuracy Inertial Navigation System |
| UT | Universal Time |
| NIST | National Institute For Standards And Technology |