| Acronym | Meaning |
 | AG | Alternating Gradient |
| IRS | Indian Remote-sensing Satellite |
| VORTAC | Very High Frequency (omnirange) TACAN (tactical Air Navigation System) |
| MSU | Mass Storage Unit |
| IIASA | International Institute For Applied Systems Analysis |
| WVIOP | Water Vapor Intensive Observing Period |
| IFEOS | International Forum On Earth Observations Using Space Station Elements |
| GPRA | Government Performance And Results Act |
| GLRS | Geodynamics (or Geoscience) Laser Ranging System |
| JAFNA | Joint Air Force NASA Facility |
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