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