Appendix F
Acronyms and Abbreviations
ACT Atacama Cosmology Telescope
AGN active galactic nucleus
ALMA Atacama Large Millimeter Array
AMSR-E Advanced Microwave Scanning Radiometer-Earth
AMSU Advanced Microwave Sounding Unit
ARM Atmospheric Radiation Monitoring
ARSR Air Route Surveillance Radars
ATA The Allen Telescope Array
ATMS Advanced Technology Microwave Sounder
AUI Associated Universities, Inc.
AVHRR Advanced Very High Resolution Radiometer
AWS Advanced Wireless Services
BOINC Berkeley Open Infrastructure for Network Computing
BRS/EBS Broadband Radio Service and Educational Broadband Service
CAPE connective available potential energy
CCAT Cornell Caltech Atacama Telescope
CFC chlorofluorocarbon
CMB cosmic microwave background
CME coronal mass ejection
CMIS Compact Microscope Imaging System
COBE Cosmic Background Explorer
CORF Committee on Radio Frequencies
CR cognitive radio
DDA direct data assimilation
DFS dynamic frequency selection
DIA Denver International Airport
DMSP Defense Meteorological Satellite Program
DOD Department of Defense
ECV essential climate variable
EDR Environmental Data Record
EESS Earth Exploration-Satellite Service
EIRP equivalent isotropically radiated power
EOS Earth Observing System
ESMR Electrical Scanning Microwave Radiometer
ESTAR Electronically-Scanned Thinned Array Radiometer
EVLA Expanded Very Large Array
FASR Frequency Agile Solar Radiotelescope
FCC Federal Communications Commission
FS Fixed Service
GBT Green Bank Telescope
GCOM-W Global Change Observation Mission-Water
GCOS Global Climate Observing System
GEO geostationary orbit (satellite); Group on Earth Observations
GEOSS Global Earth Observation System of Systems
GFSC Goddard Space Flight Center
GMI Global Precipitation Measurement-Microwave Imager
GOES Geostationary Operational Environmental Satellites
GPM Global Precipitation Measurement (mission)
GPS Global Positioning System
GR Einstein’s theory of general relativity
HCFC hydrochlorofluorocarbon
HFC hydrofluorocarbon
HOMER Hybrid Optimization Model for Electric Renewables
HSB Humidity Sounder for Brazil
IPCC Intergovernmental Panel on Climate Change
ITU International Telecommunication Union
ITU-R ITU Radiocommunication Sector
ITU-RR ITU Radio Regulations
IUCAF Scientific Committee on Frequency Allocations for Radio Astronomy and Space Science
IWP ice water path
JMR JASON Microwave Radiometer
LEO low Earth orbit
LI lifted index
LIGO Laser Interferometer Gravitational Wave Observatory
LISA Laser Interferometer Space Antenna
LMS Land Mobile Service
LMSS Land Mobile Satellite Service
LMT Large Millimeter Telescope
LWA Long Wavelength Array
MEMS microelectromechanical systems
MHS Microwave Humidity Sounder
MIRAS Microwave Imaging Radiometer using Aperture Synthesis
MIS Microwave Imager/Sounder
MLS Microwave Limb Sounder
MODIS Moderate Resolution Imaging Spectroradiometer
MSU microwave sounding unit
MWA Murchison Widefield Array
NAIC National Astronomy and Ionosphere Center
NASA National Aeronautics and Space Administration
NEMS Nimbus-E Microwave Spectrometer
NOAA National Oceanic and Atmospheric Administration
NPOESS National Polar-orbiting Operational Environmental Satellite System
NPRM notice of public rule making
NRAO National Radio Astronomy Observatory
NRC National Research Council
NRQZ National Radio Quiet Zone
NSF National Science Foundation
NTIA National Telecommunications and Information Administration
NWP numerical weather prediction
OOB out-of-band (emissions)
PATH Precipitation and All-Weather Temperature and Humidity
PECAD/CADRE Production Estimate and Crop Assessment Division’s Crop Condition Data Retrieval and Evaluation
pfd power flux density (usually measured in Wm–2)
PSR Polarimetric Scanning Radiometer
PSU practical salinity unit
PWV precipitable water vapor
RAS Radio Astronomy Service
RF radio frequency
RFI radio frequency interference
RMS root-mean-square
RNSS Radionavigation Satellite Service
RR Radio Regulations (the international treaty governing spectrum use)
SAIR Synthetic Aperture Interferometric Radiometer
SAR synthetic aperture radar
SCLP Snow and Cold Land Processes
SDR software-defined radio
SETI Search For Extraterrestrial Intelligence
SFMR Stepped Frequency Microwave Radiometer
SIRICE Submillimeter Infrared Radiometer Ice Cloud Experiment
SKA Square Kilometer Array
SM soil moisture
SMAP Soil Moisture Active Passive
SMMR Scanning Multi-Channel Microwave Radiometer
SMOS Soil Moisture Ocean Salinity
SNR signal-to-noise ratio
spfd spectral power flux density (measured in Wm–2 Hz–1)
SPT South Pole Telescope
SPTF Spectrum Policy Task Force
SRS Space Research Service
SSM/I Special Sensor Microwave Imager
SSMI/S Special Sensor Microwave Imager/Sounder
SSM/T Special Sensor Microwave/Temperature
SSS sea surface salinity
SST sea surface temperature
SUBTEL Subsecretaría de Telecomunicaciones
SSWV sea surface wind vector
SWE snow water equivalent
TDM time-division multiplexing
TDRSS Tracking and Data Relay Satellite System
TIROS Television Infrared Observation Satellite
TMI TRMM Microwave Imager
TOPEX Topography Experiment
TOVS TIROS Operational Vertical Sounder
TRMM Tropical Rainfall Measuring Mission
TTI total of totals index
UAL United Airlines
UWB ultrawideband
VLA Very Large Array
VLBA Very Long Baseline Array
VLBI very long baseline interferometry
WMTS Wireless Medical Telemetry Service
WP7D ITU Working Party 7D
WRC World Radiocommunication Conference