Alaska Satellite Facility

ASF home graphic dish with satellite above and aurora in the sky


Below is a collection of headlines, notices, and archived newsletters from the Alaska Satellite Facility’s News & Notes. View the latest newsletters below, and for training notices click here.

Thruster anomaly affects Sentinel-1 orbit control

An anomaly in a thruster used for Sentinel-1 orbit positioning control has resulted in the “orbit tube” diameter increasing from 100 meters to 200 meters maximum. The effect of this action on interferometric baselines has been predicted:

“The preliminary conclusion, supported by InSAR experts, is that the perpendicular baseline, a key InSAR performance indicator, will remain within acceptable limits. Burst synchronization at data-take start is not expected to be impacted, and degradation within data-take and as well as reduction of spectral overlap due to crossing orbits are expected to be limited.”

Detailed information is available from ESA:

Screenshot of Sentinel-1 bursts in the Vertex search interface

HyP3 On Demand offers Sentinel-1 SLC burst processing

Listen to Dr. Forrest Williams of ASF announce the news at this year’s American Geophysical Union meeting!
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OPERA logo

JPL OPERA Level 2 products available from ASF

The Alaska Satellite Facility announces the availability of new data products from the Observational Products for End-Users from Remote Sensing ...
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artist rendering of the NISAR satellite

NISAR Sample Data Now Available

The NISAR project team has created sample products using JAXA ALOS-1 PALSAR data as a surrogate for NISAR. The sample ...
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Sentinel-1 data file size increases

A result of the transition made by ESA to its new Copernicus Data Space Ecosystem is that Sentinel-1 data files ...
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radarsat-1 antarctica mosaic

NASA announces that RADARSAT-1 data are Open Data at ASF

NASA has announced that all RADARSAT-1 data archived at the Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) are ...
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jaxa mosaic

Global SAR Mosaic Datasets Available from JAXA

Explore the Earth like never before with Global Mosaics and Maps created from data acquired by the JERS-1 (1992-98), ALOS ...
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The ASF antennas atop the Geophysical Institute and in the woods on the West Ridge of the UAF campus.

ASF Receives New NASA Contract Award

The Alaska Satellite Facility was recently awarded NASA’s Earth Radar Data Operations Management contract for another 5 years. The continued ...
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screenshot of vertex in spanish

ASF Vertex Data Search is now available in Spanish!

In response to many requests from our users, the powerful Vertex search application is now available in a Spanish version. ...
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ASF OpenScienceLab featured this month

The NASA Earthdata website currently highlights OpenSciecneLab (OSL) in its Data Tool in Focus section. OSL is an ASF service ...
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ARIA GUNW interferogram

JPL uses data from ASF for the ARIA Project

The JPL/CalTech ARIA Project utilizes SAR data and GPS for detecting and measuring ground deformation and creating predictive models. Cloud-based ...
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gun-w interferogram over turkey

ALOS-2 PALSAR-2 data available over the Turkey/Syria earthquake region

ALOS-2 PALSAR-2 ScanSAR L1.1 (SLC, full-aperture focusing) products acquired over the area of the recent Turkey/Syria earthquakes are now freely available ...
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On Demand Sentinel-1 RTC is now available at 10-m pixel spacing and in dB scale!

The Alaska Satellite Facility (ASF) has released new processing options for On Demand Sentinel-1 Radiometric Terrain Correction (RTC). RTC products can now be ...
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