THEMATIC AREA
  • Aerosols
  • Afforestation/Reforestation
  • Agricultural Chemicals
  • Agriculture
  • Air Quality
  • Altitude
  • Aquaculture
  • Atmosphere
  • Atmospheric Chemistry
  • Atmospheric Electricity
  • Atmospheric Indicators
  • Atmospheric Pressure
  • Atmospheric Radiation
  • Atmospheric Temperature
  • Atmospheric Water Vapour
  • Atmospheric Winds
  • Bathymetry and Seafloor Topography
  • Biosphere
  • Biospheric Indicators
  • Carbon
  • Climate
  • Clouds
  • Coastal Processes
  • Crops and Yields
  • Cryosphere
  • Cryospheric Indicators
  • Cultural Heritage
  • Diseases and Pests
  • Earth Gases and Liquids
  • Earthquakes
  • Ecological Dynamics
  • Ecosystems
  • Energy and Natural Resources
  • Environmental Governance and Management
  • Environmental Impacts
  • Environmental Vulnerability Index
  • Erosion and Sedimentation
  • Essential Climate Variables
  • Fisheries
  • Food Security
  • Forest Conservation/Protection
  • Forest Fires
  • Forest Management
  • Forest Mensuration/Inventory
  • Forestry
  • Frozen Ground and Permafrost
  • Geochemistry
  • Geodetics
  • Geomagnetism
  • Geomorphic Landforms and Processes
  • Geothermal Dynamics
  • Glaciers and Ice Sheets
  • Gravity and Gravitational Field
  • Groundwater
  • Habitat Conversion and Fragmentation
  • Human Dimensions
  • Human Settlements
  • Infrastructure
  • Invasive Species
  • Ionosphere and Magnetosphere Dynamics
  • Lakes
  • Land Surface
  • Land Surface and Agriculture Indicators
  • Land Use and Land Cover
  • Landscape
  • Mapping and Cartography
  • Marine Environment Monitoring
  • Marine Geophysics
  • Marine Sediments
  • Natural Hazards and Disaster Risk
  • Ocean Chemistry
  • Ocean Circulation
  • Ocean Heat Budget
  • Ocean Indicators
  • Ocean Optics
  • Ocean Temperature
  • Ocean Waves
  • Oceans
  • Organic Matter
  • Paleoclimate Indicators
  • Permafrost
  • Plant Phenology
  • Plate Tectonics
  • Population
  • Precipitation
  • Public Health
  • Reclamation, Revegetation and Restoration
  • Rivers
  • Rocks, Minerals and Crystals
  • Salinity and Density
  • Sea Ice
  • Sea Surface Topography
  • Security
  • Snow and Ice
  • Socioeconomics and Sustainability
  • Soil Classification
  • Soil Erosion
  • Soil Moisture
  • Soil Texture
  • Soils
  • Solar Activity
  • Solar Energetic Particle Flux
  • Solar Energetic Particle Properties
  • Solid Earth
  • Sun-Earth Interaction
  • Sun-Earth Interaction Indicators
  • Surface Radiative Properties
  • Surface Thermal Properties
  • Surface Water
  • Tectonics
  • Terrestrial Hydrosphere
  • Terrestrial Hydrosphere Indicators
  • Tides
  • Topography
  • Vegetation
  • Volcanic Activity
  • Water Quality
  • Water Quality and Water Chemistry
  • Weather Events
  • Wetlands
INSTRUMENT TYPE
  • Altimeters
  • Imaging Radars
  • Interferometers
  • Interferometric Radiometers
  • Magnetic Field/Electric Field Instruments
  • Magnetic/Motion Sensors
  • P-SAR
  • Photon/Optical Detectors
  • Positioning/Navigation
  • Profilers/Sounders
  • Radar Spectrometers
  • Scatterometers
  • Spectrometers
  • Spectrometers/Radiometers
  • Thermal/Radiation Detectors
INSTRUMENT
  • AATSR
  • ACC
  • ACE-FTS
  • AIRSAFE
  • ALADIN
  • AMI/SAR
  • AMI/Scatterometer
  • ASAR
  • ASCAT
  • ASM
  • ATLID
  • ATSR-1
  • ATSR-2
  • AVHRR
  • AVNIR-2
  • AwiFS
  • BBR
  • BGI
  • CER
  • CHRIS
  • CPR
  • CZCS
  • DORIS
  • EFI
  • EGG
  • EOC
  • ETM
  • FAI
  • FLORIS
  • GERB
  • GIS
  • GOME
  • GOME-2
  • GOMOS
  • GPSR
  • GRACE ACC
  • GRACE INTERFEROMETER
  • GRACE LRR
  • GRACE SCA
  • HiRAIS
  • HiRI
  • HIRS/2
  • HRC
  • HRG
  • HRS
  • HRV
  • HRVIR
  • IASI
  • IRM
  • LISS-3
  • LISS-4
  • LRR
  • LRR
  • MAESTRO
  • MERIS
  • MGF
  • MHS
  • MIPAS
  • MIRAS
  • MODIS
  • MSI
  • MSS
  • MWR
  • NAOMI
  • NMS
  • OCM-2
  • OLI
  • OMI
  • OPS
  • OSA
  • OSIRIS
  • PALSAR
  • PAN
  • PlanetScope Imager
  • PRARE
  • PRISM
  • RA
  • RA2/MWR
  • RRI
  • SAR
  • SCIAMACHY
  • SeaWiFS
  • SeaWinds
  • SEI
  • SENSE
  • SEVIRI
  • SIRAL
  • SkySat Camera
  • SLIM6
  • SMR
  • SSTI
  • Star Tracker
  • STR
  • STRATOS
  • TANSO-CAI
  • TANSO-FTS
  • TIRS
  • TM
  • TSX-1
  • VFM
  • VGT
  • WIF
  • WV1
  • WV6
  • X-SAR

Data

Discover and download the Earth observation data you need from the broad catalogue of missions the European Space Agency operate and support.

data description

SeaSat ESA archive

The Seasat ESA archive collection mainly covers Europe during the full life of the mission. The products are available as: - Level-1 SAR Ellipso...

News

Discover the latest news on the European Space Agency's Earth Observation activities. Learn all about new data availability and how ESA's missions are performing.

scientific highlights

Satellite Radar Altimetry: past and future

Satellite radar altimetry measurements yield a wealth of information that can be used for a wide range of applications.

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Missions

Explore the European Space Agency's Earth Observation satellite missions. Learn all about ESA's dedicated Earth Explorers or collaborations with other agencies through the Third Party Missions programme.

SeaSat
third party missions

SeaSat

On board SeaSat was the first-ever space-borne synthetic aperture radar (SAR) system for science applications.

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OTHER RESOURCES

Browse through mission documentation and reports, and learn more about European Space Agency Earth Observation projects and opportunities.

DOCUMENT - Technical Note

1 Mar 2019

The SeaSat-A Synthetic Aperture Radar System

The SeaSat-A synthetic aperture radar imaging radar system (SAR) was the first imaging radar system used as a scientific instrument from Earth orbit. The system generated continuous radar imagery with a 100 km swath at a resolution of 25 m from an 800 km altitude orbit. The imagery is a pictorial representation of the radar backscatter of the Earth's surface in a map-like representation. Download