SAR Data Center (SDC)

The SDC operated by ASF is a National Aeronautics and Space Administration funded Distributed Active Archive Center. The SDC specializes in SAR data collection, processing, archiving, and distribution. The SDC provides SAR data from a variety of satellites and aircraft as well support services to U.S. Government-approved researchers.

DAAC URSA Vertex

ASF Enterprise (ASF-E)

The Alaska Satellite Facility Enterprise (ASF-E) manages income and expenditures for activities within ASF that do not fall under grants and contracts, such as a RADARSAT-1 Network Ground Station, remote-sensing training, and the Americas ALOS Data Node .

Satellite Tracking Ground Station (STGS)

The STGS operated by ASF manages two antennas, a 10-meter system and an 11-meter system. Both antennas are capable of X-band and S-band downlink and, in addition, the 11-meter system provides support S-band command uplink. The STGS is part of the National Aeronautics and Space Administration Ground Network system.

GeoData Center (GDC)

The GDC provides data management and archive services for the Geophysical Institute and maintains a variety of geophysical data collections in support of scientific research. Maps and aerial photography focused on Alaska are also available.



Alaska Satellite Facility

The Alaska Satellite Facility (ASF) of the Geophysical Institute (GI) at the University of Alaska Fairbanks, downlinks, archives, and distributes satellite-based data to scientific users around the world.

ASF's mission is to promote, facilitate, and participate in the advancement of remote sensing data.

Search SAR Data Sets

DAAC URSA Vertex

News and Events

ASF Internet Outage May 20 2012

All web resources at ASF will be unavailable on May 20 2012 due to a planned internet outage. This includes ASF URSA, DAAC URSA, Vertex, and the ASF website.

MapReady Version 3.0.6 Released

A new version of ASF MapReady is now available for download. New features include:

  • Radiometric terrain correction processing using the Ulander approach
  • Improved ALOS PALSAR L1.1 geolocation
  • Radiometrically terrain corrected polarimetric results
  • Ability to handle polarimetric UAVSAR data

ASF Jigsaw Puzzle

Visit the ASF jigsaw puzzle page to put together a puzzle of Hall and St. Matthew Islands. Different puzzles can be selected on the right after completing this month's puzzle. Look for a new puzzle each month. Go to Jigsaw Puzzle