AC

Alternating Current

AF

Audio Frequency

CORRAD

Correlation Radiometer

DC

Direct Current

DR

Dicke Radiometer

DRO

Dielectric Resonator Oscillator

DSB

Double Sideband

DTU

Technical University of Denmark

EMC

Electro Magnetic Compatibility

ENR

Excess Noise Ratio

ESA

European Space Agency

ESTAR

Electronically Scanned Thinned Aperture Radiometer

FPGA

Field Programmable Gate Array

IF

Intermediate Frequency

IMR

Imaging Microwave Radiometer

INS

Inertial Navigation System

IR

Infrared

LAMMR

Large Aperture Multifrequency Microwave Radiometer

LF

Low frequency

LO

Local Oscillator

MIMR

Multifrequency Imaging Microwave Radiometer

MIRAS

Microwave Imaging Radiometer with Aperture Synthesis

MMIC

Monolithic Microwave Integrated Circuit

NASA

National Aeronautical and Space Administration

NIR

Noise-Injection Radiometer

NOSS

National Oceanic Satellite System

psu

practical salinity unit (= parts per thousand)

RF

Radio Frequency

S

Salinity

SMMR

Scanning Multichannel Microwave Radiometer

SMOS

Soil Moisture and Ocean Salinity

SSB

Single Sideband

SSM/I

Special Sensor Microwave / Imager

SST

Sea Surface Temperature

TEC

Total Electron Contents

TPR

Total Power Radiometer

UHF

Ultra High Frequency

WS

Wind Speed