Sentinel 1A and 1B

Sentinel-1A and Sentinel-1B offer all-weather radar imaging for land, ocean, and disaster monitoring applications with global coverage.

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Technical Specifications

ProviderEuropean Space Agency
Resolution5 - 20m GSD
Accuracy1 - 3m at nadir
Stereo availableNo
Coverage500,000 km² per day
Altitude693 km


Sentinel-1A and Sentinel-1B are a pair of advanced radar imaging satellites launched by the European Space Agency (ESA) in 2014 and 2016, respectively. These two satellites provide all-weather imaging of land and ocean conditions, enabling a range of applications such as maritime surveillance, disaster response, and land deformation monitoring. With their global coverage and high-frequency imaging capabilities, Sentinel-1A and Sentinel-1B are valuable assets for a wide range of industries and applications.

All-weather imaging
All-weather imaging

Capture high-quality radar imagery for monitoring and disaster response regardless of weather or cloud cover.

High-frequency imaging
High-frequency imaging

12-day repeat cycle enables high-frequency imaging for monitoring land, ice, and water changes.

Ground deformation monitoring
Ground deformation monitoring

InSAR capability measures ground deformation, aiding geological hazard monitoring (earthquakes, landslides).

Features and Benefits

  • Sentinel-1A and Sentinel-1B are equipped with synthetic aperture radar (SAR), which allows for all-weather imaging regardless of cloud cover, making it an ideal tool for monitoring coastal areas and maritime surveillance.
  • With a 12-day repeat cycle, Sentinel-1A and Sentinel-1B provide high-frequency imaging of the same area, allowing for monitoring of changes in land cover and water quality.
  • The interferometric SAR (InSAR) capability of Sentinel-1A and Sentinel-1B allows for the measurement of ground deformation, making it an essential tool for monitoring geological hazards, such as earthquakes and landslides.
  • Sentinel-1A and Sentinel-1B provide global coverage, making them ideal tools for monitoring changes in land cover, ice extent, and water quality around the world.

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