Alaska Satellite Facility - Distributed Active Archive Center


NASA’s provision of the complete ESA Sentinel-1 synthetic aperture radar (SAR) data archive through the ASF DAAC is by agreement between the U.S. State Department and the European Commission (EC). As part of the Earth-observation Copernicus program, the Sentinel mission will provide scientists with accurate, timely, and easily accessible information to help shape the future of our planet. Content on ASF’s Sentinel web pages is adapted from the ESA Sentinel-1 website.

Sentinel-1 – Acquisition Maps

Sentinel-1 Data Coverage Heat Maps Data are open-access and available through Vertex. Click on an image below to see where data products are available. Cumulative Acquisition Maps Two Cumulative Heat maps

Sentinel-1 – Applications

With ongoing, all-weather, day-and-night, global Earth data, the Sentinel-1 mission facilitates monitoring and mapping of sea ice, oil-spills, land-surface motion, humanitarian crises, and more.

Sentinel-1 – Documents and Tools

Resources include product specification documents, dataset citation information for scientists using Sentinel-1 synthetic aperture radar (SAR) data, and references for relevant scientific literature. 

Sentinel-1 – How to Cite

Citing Sentinel Data Cite datasets in publications such as journal papers, articles, presentations, posters, and websites. For more information, see Terms and Conditions. Please send copies of, or links to, published works citing

Sentinel-1 – Instrument

Launches: Sentinel-1B: Soyuz rocket, launched 25 April 2016, from Kourou, French Guiana Sentinel-1A: Soyuz rocket, launched 3 April 2014, from Kourou, French Guiana Orbit: Polar, sun-synchronous at an altitude of

Sentinel-1 – Observation Plans

The Sentinel-1 SAR observation plan implements a baseline pre-defined mission observation scenario, making optimum use of the SAR duty cycle within the technical constraints of the overall system. This scenario

Sentinel-1 – Terms and Conditions

European Space Agency Legal Notice on the Use of Copernicus Sentinel Data and Service Information How to Cite The access and use of Copernicus Sentinel Data and Service Information is

Sentinel-1 – Tutorials

Documents SAR Basics with the Sentinel-1 Toolbox Sentinel-1 Stripmap Interferometry Sentinel-1 TOPSAR Interferometry Radarsat-2 Interferometry SAR Polarimetry ALOS Orthorectification Videos Sentinel-1 Toolbox Introduction Graph Building and Applying Radiometric Terrain-Flattening Stripmap

Sentinel-1 – What is TOPSAR?

TOPSAR: Novel Radar Technique Sentinel-1 uses a cutting-edge SAR technique known as Terrain Observation with Progressive Scans SAR (TOPSAR). As this video illustrates, like standard ScanSAR, TOPSAR sends and