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ADEOS |
Advanced Earth Observing Satellite |
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ALOS |
Advanced Land Observing Satellite |
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ALT |
radar altimeter |
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AMSR |
Advanced Microwave Scanning Radiometer |
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ARM |
Atmospheric Radiation Measurement |
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ASA |
Authorized Shared Access |
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BLR |
boundary layer radar |
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CASA |
Collaborative Adaptive Sensing of the Atmosphere |
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CCD |
coherent change detection |
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CCN |
cloud condensation nuclei |
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CDMA |
Code Domain Multiple Access |
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CITEL |
Commission for Inter-American Telecommunications |
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CNES |
French Space Agency |
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CODAR |
Coastal Ocean Dynamics Applications Radar |
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CONUS |
continental United States |
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CYGNSS |
Cyclone Global Navigation Satellite System |
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DARN |
Dual Auroral Radar Network |
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DEM |
Digital Elevation Model |
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DOD |
Department of Defense |
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DPR |
Dual-frequency Precipitation Radar |
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ECMWF |
European Centre for Medium-Range Weather Forecasts |
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EESS |
Earth Exploration-Satellite Service |
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EIRP |
Effective Isotropic Radiated Power |
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EISCAT |
European Incoherent Scatter Radar |
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ELF |
extremely low frequency |
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EM |
electromagnetic |
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ERS-1 |
European Remote Sensing Satellite |
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ESA |
European Space Agency |
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ESM |
Electromagnetic Spectrum Management |
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EUV |
extreme ultraviolet |
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FAA |
Federal Aviation Administration |
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FAI |
field-aligned irregularity |
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FCC |
Federal Communications Commission |
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FDMA |
Frequency Division Multiple Access |
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GBT |
Green Bank Telescope |
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GCM |
General Circulation Model |
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GIRO |
Global Ionospheric Radio Observatory |
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GMDSS |
Global Maritime Distress and Safety System |
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GMF |
Government Master File |
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GNSS |
Global Navigation Satellite Systems |
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GPM |
Global Precipitation Mission |
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GPR |
ground-penetrating radar |
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GR |
general relativity |
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GRACE |
Gravity Recovery and Climate Experiment |
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IMF |
interplanetary magnetic field |
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InSAR |
Interferometric SAR |
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IOOS |
Integrated Ocean Observing System |
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IRAC |
Interdepartment Radio Advisory Committee |
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ISR |
Ionosondes and Incoherent-Scatter Radar |
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ISS |
International Space Station |
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ITU |
International Telecommunications Union |
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ITU-R |
Radiocommunication Sector of the International Telecommunications Union |
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JAXA |
Japan Aerospace Exploration Agency |
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LAN |
local area networks |
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LMS |
least mean square |
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LSA |
Licensed Shared Access |
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MetSat |
Meteorological Satellite Services |
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MHR |
Mile High Radar |
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MPAR |
Multifunction Phased Array Radar |
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MSS |
Mobile Satellite Service |
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MST |
mesosphere-stratosphere-troposphere |
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NASA |
National Aeronautics and Space Administration |
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NASDA |
National Space Development Agency |
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Ne |
total plasma density |
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NEA |
near-Earth asteroid |
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NEO |
near-Earth object |
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NEXRAD |
WSR-88D radar network |
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NISAR |
NASA/ISRO L-band SAR mission |
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NPB |
National Broadband Plan |
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NRC |
National Research Council |
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NSCAT |
NASA Scatterometer |
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NSF |
National Science Foundation |
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NTIA |
National Telecommunications and Information Administration |
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NWP |
Numerical Weather Prediction |
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OSTM |
Ocean Surface Topography Mission |
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PALSAR |
Phased Array type L-band Synthetic Aperture Radar |
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PFISR |
Poker Flat, Alaska, Incoherent-Scatter Radar |
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PHA |
potentially hazardous asteroid |
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PMSE |
Polar Mesospheric Summer Echoes |
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PR |
precipitation radar |
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PRF |
pulse repetition frequency |
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RFI |
Radio Frequency Interference |
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RLAN |
Radio Local Access Network |
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RLS |
Radio Location Service |
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RSI |
Radar Speckle Interferometry |
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SAR |
synthetic-aperture radar |
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SASS |
Seasat-A Satellite Scatterometer |
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Scat |
scatterometer |
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SINR |
signal-to-interference-plus-noise ratio |
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SLAR |
systems/side-looking airborne radar |
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SMAP |
Soil Moisture Active Passive |
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SMMR |
Scanning Multichannel Microwave Radiometer |
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SMS |
Spectrum Management for Science in the 21st Century |
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SOS |
Space Operation Services |
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SOTR |
Space Object Tracking Radar (DOD) |
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SRS |
Space Research Services |
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SRTM |
Shuttle Radar Topography Mission |
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SST |
sea surface temperature |
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STA |
Special Temporary Authority |
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SWE |
snow water equivalent |
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SWOT |
Surface Water Ocean Topography |
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SXXI |
Spectrum XXI |
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TEC |
total electron content |
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TNT |
trinitrotoluene |
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TRMM |
Tropical Rain Mapping Mission |
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U.S. WP7C |
U.S. Working Party 7C |
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ULS |
Universal Licensing System |
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VLA |
Very Large Array |
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VLBA |
Very Long Baseline Array |
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VLF |
very low frequency |
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WRC |
World Radiocommunication Conference |