Appendix A - Acronym Expansion

                         AGS               Alaska Ground Station

                         ACCA            Automatic Cloud Cover Assessment

                         CCSCS           Consultative Committee for Space Data Systems

                         CPF                Calibration Parameter File

                         CRAM            Combined Radiometric Correction Model

                         DFCB             Data Format Control Book

                         DOQ               Digital Orthophoto Quadrangle

                         FAC               Full Aperture Calibrator

                         ECS                EOSDIS Core System

                         EDC-DAAC   EROS Data Center Distributed Active Archive Center

                         EOSAT          Earth Observation Satellite Company

                         EOSDIS         EOS Data and Information System

                         EPGS             EOS Polar Ground Sites

                         EROS             Earth Resources Observation Systems

                         ETM               Enhanced Thematic Mapper

                         ETM+             Enhanced Thematic Mapper Plus

                         FTP                File Transfer Protocol

                         FDF                Flight Dynamics Facility

                         GeoTIFF        Geographic Tagged Image File Format

                         GSD               Ground Sample Distance

                         IAS                 Image Assessment System

                         IFOV              Instantaneous Field of View

                         IGS                 International Ground Stations

                         IOC                Initial On-orbit Checkout

                         IAD                Ion Assisted Deposition

                         JPL                 Jet Propulsion Laboratory

                         LGS                Landsat Ground Station

                         LPGS              Level-1 Product Generation System

                         LPS                Landsat Processing System

                         ME                 Memory Effect

                         MOC              Mission Operations Center

                         MMS              multimission modular spacecraft

                         PAC               Partial Solar Calibrator

                         SCS                Scan Correlated Shift

                         SLC                Scan Line Corrector

                         SMA               Scan Mirror Assembly

                         SME               Scan Mirror Electronics

                         SWIR               Short Wave Infrared

                         SNR               Signal to Noise Ratio

                         SGS                Svalbard Ground Station

                         SRR                Solid State Recorder

                         TDRS             Tracking Data and Relay Satellites

                         TM                 Thematic Mapper

                         USAF             United State Air Force

                         USGS             United States Geological Survey

                         VNIR              Visible & Near Infrared

                         WFF               Wallops Flight Facility

                         WRS               Worldwide Reference System