| Acronym | Definition |
|---|
| ADT | Algorithm Development Team |
| AT | Along Track |
| AWS | Amazon Web Services |
| BFPQ | Block adaptive Floating-Point Quantization |
| Cal/Val | Calibration and Validation (also sometimes cal/val) |
| CDR | Critical Design Review |
| CF | Climate and Forecast |
| CPU | Central Processing Unit |
| CRSD | Calibration Raw Signal Data |
| CSV | Comma-separated values |
| DAAC | Distributed Active Archive Center |
| DEM | Digital Elevation Model |
| DN | Digital Number |
| EAR | Export Administration Regulations |
| ECMWF | European Centre for Medium-Range Weather Forecasts |
| ECEF | Earth Centered Earth Fixed |
| EPSG | European Petroleum Survey Group |
| ESA | European Space Agency |
| FM | Frequency Modulation |
| FOP | Forecast Orbit Ephemeris |
| FOV | Field of View |
| GCOV | Geocoded Polarimetric Covariance (also as L2_GCOV) |
| GCP | Ground Control Point |
| GDAL | Geospatial Data Abstraction Library |
| GDS | Ground Data System |
| GIS | Geographic Information System |
| GMTED | Global Multi-resolution Terrain Elevation Data |
| GNSS | Global Navigation Satellite System |
| GOFF | Geocoded Pixel Offsets (also as L2_GOFF) |
| GPU | Graphics Processing Unit |
| GSLC | Geocoded Single Look Complex (also as L2_GSLC) |
| GUNW | Geocoded d Unwrapped Interferogram (also as L2_GUNW) |
| HDF5 | Hierarchical Data Format version 5 |
| HK,HKTM | Housekeeping Telemetry |
| InSAR | Interferometric Synthetic Aperture Radar |
| ISCE | InSAR Scientific Computing Environment |
| ISCE3 | InSAR Scientific Computing Environment Enhanced Edition (for NISAR) |
| ISO | International Organization for Standardization |
| ISRO | Indian Space Research Organisation (British spelling) |
| L0B | Level-0B (data) |
| L1 | Level-1 (data) |
| L2 | Level-2 (data) |
| LOS | Line-Of-Sight |
| LUT | Lookup Table |
| Mbps | Megabits per second |
| MHz | Megahertz |
| MOE | Medium-precision Orbit Ephemeris |
| NCSA | National Center for Supercomputing Applications |
| NetCDF4 | Network Common Data Form version 4 |
| NISAR | NASA-ISRO Synthetic Aperture Radar |
| NOE | Near-Realtime Orbit Ephemeris |
| PDR | Preliminary Design Review |
| PLM | Product Lifecycle Management |
| POD | Precision Orbit Determination |
| POE | Precision Orbit Ephemeris |
| PRF | Pulse Repetition Frequency |
| QA | Quality Assurance |
| REE | Radar Echo Emulator |
| RFI | Radio Frequency Interference |
| RIFG | Range-Doppler Interferogram (also as L1_RIFG) |
| ROFF | Range-Doppler Pixel Offsets (also as L1_ROFF) |
| RRSD | Radar Raw Signal Data |
| RRST | Radar Raw Science Telemetry |
| RSLC | Range-Doppler Single Look Complex (also as L1_RSLC) |
| RUNW | Range-Doppler UnWrapped Interferogram (also as L1_RUNW) |
| SAR | Synthetic Aperture Radar |
| SAS | Science Algorithm Software |
| SDS | Science Data System |
| SDT | Science Definition Team |
| SIS | Software Interface Specification |
| SLC | Single Look Complex |
| SNAPHU | Statistical-cost, Network-flow Algorithm for Phase Unwrapping |
| SRTM | Shuttle Radar Topography Mission |
| ST | Science Team |
| TAI | International Atomic Time (Temps Atomique International) |
| TCF | Terrain Correction Factor |
| TEC | Total Electron Content |
| TFdb | Track-frame Database |
| SWST | Sampling Window Start Time |
| UR | Urgent Response |
| UTC | Universal Time Coordinated |
| UTM | Universal Transverse Mercator |
| WGS84 | World Geodetic System 84 |
| XML | eXtensible Markup Language (xml in code) |
| YAML | YAML Ain’t Markup Language |