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:
https://sentinels.copernicus.eu/web/sentinel/-/sentinel-1a-change-in-the-orbit-control-strategy
https://sentinels.copernicus.eu/documents/d/sentinel/esa-eopg-eopgmq-tn-2024-12-increase-of-sentinel-1a-orbital-tube
A New Antenna for ASF Ground Station
ASF 25th-Anniversary Celebration
2006 Anniversary Edition – Message from the ASF Director
2006 Anniversary Edition – Global Forest Mapping with JERS-1 SAR
2006 Anniversary Edition – Interferometric Synthetic Aperture Radar: Building Tomorrow’s Tools Today
2006 Anniversary Edition – ALASKA SAR FACILITY: In the Beginning
2006 Anniversary Edition – A Brief History of the RADARSAT-1 Antarctic Mapping Project
2006 Anniversary Edition – Sea Ice Motion: Science Driving U.S. SAR Research
