| Acronym | Meaning |
 | MVS/XA | Multiple Virtual Systems/Extended Architecture |
 | AFCCN | Air Force Chief Scientist |
 | PDF | Probability Density Functions |
 | PSA | Problem Statement Analyzer |
 | ONR | Office Of Naval Research |
 | GEOS | Geostationary Earth-Orbiting Satellite |
 | SIGMA | Software For Interactive Graphics And Model Analysis |
 | OMO | Orbiting Meteorological Observatory |
 | SPECMAP | Spectral Mapping |
 | ATHENA | Advanced Thermal-Hydraulic Energy Network Analyzer |