The evolution of the Sentinel Collaborative Ground Segment
12 January 2017
ESA and its Member States created the Sentinel Collaborative Ground Segment (CollGS) to further enhance the Sentinel missions exploitation in various areas. Today, the cooperation is also open to all European countries and Copernicus Participating States.
Besides the challenging task of building and launching a satellite, a key indicator of the success of an Earth observation mission relies on ensuring that the data gathered are of good quality and made easily available to users.
These functions are all ensured by the Copernicus Space Component (CSC) Ground Segment.
The Sentinel Collaborative Ground Segment complements the Copernicus Ground Segment. This entails additional elements for specialised solutions in different technological areas, such as data acquisition, complementary production and dissemination.
But what does the CollGS do, exactly?
- National entities can build-up their own mirror data archive and base operational services on Sentinel data. Participating countries then redistribute the Sentinel data and/or value added products from their “mirror sites”, to institutional, commercial and science users.
- Many mirror sites in place are now also adding hosted processing to their services.
- If technically required to meet data timeliness obligations, local ground stations are configured to listen-in as Sentinel data is downlinked to core ground stations. This allows for quasi-real time product generation as, for instance, in supporting marine surveillance activities in the Baltic Sea.
- Furthermore, in the frame of the CollGS, national initiatives carry out the development of innovative tools and applications.
Canada, which is an associate ESA Member State, operates extremely important land and maritime monitoring activities, with C-CORE and other organisations. Having established a CollGS agreement, they can access the Sentinel products via a data hub operated by ESA and dedicated to collaborative partners.
Shahid Khurshid, Physical Scientist at Meteorological Service of Canada, and Matt Arkett, Acting Manager of Earth Observation and Geomatics, at Environment and Climate Change Canada, said: “Environment and Climate Change Canada’s Operational National SAR Winds (NSW) system provides near real-time delivery of marine wind measurements derived from spaceborne synthetic aperture Radars (SAR) to support marine forecasters & other applications.
“The programme has been operational since 2013, ingesting SAR data from the RADARSAT-1 and RADARSAT-2 missions. The NSW system began to generate operational surface wind maps using Sentinel-1A data in April 2016 and Sentinel-1B in September 2016.
“Access to Sentinel-1 data has significantly increased the temporal and spatial frequency of marine wind speed information being delivered to our operational marine forecasters.
- Copernicus Sentinel-1A collision avoidance manoeuvres on 18 March 2019 March 18, 2019 9:02 amCollision avoidance manoeuvres were executed on Copernicus Sentinel-1A on 18 March, to reduce the risk of collision with a debris, which was potentially due to occur at 05:31 UTC.
- Copernicus Sentinel-1B unavailability March 1, 2019 7:26 amA Sentinel-1B satellite unavailability occurred on 27 February 2019 from 23:21:26 UTC to 28 February 2019 15:13:19 UTC.
- Copernicus Sentinel-1 Wave Mode 2 optimisation on 28 February 2019 February 27, 2019 1:32 pmESA is working on an improvement of the Copernicus Sentinel-1 Wave Mode 2 performance, by optimising the antenna configuration (new antenna gain settings allowing a better SNR).
- Copernicus Sentinel-1B unavailability on 23 February 2019 February 25, 2019 7:32 amCopernicus Sentinel-1B was unavailable on 23 February 2019 between 12.00 UTC and 15:07 UTC, due to a SAR anomaly.
- Copernicus Sentinel-1 reveals shared plumbing led to Agung awakening February 22, 2019 3:05 pmWhen Mount Agung in Indonesia erupted in 2017, the search was on to find out why it had stirred. Thanks to information on ground deformation from the Copernicus Sentinel-1 mission, scientists now have more insight into the volcano's hidden secrets that caused it to reawaken.
- Copernicus Sentinel-1A unavailability February 15, 2019 11:09 amCopernicus Sentinel-1A was unavailable from 14 February 2019 at 19:54 UTC to 15 February 2019 at 10:26 UTC, due to a SAR anomaly.
- Copernicus Sentinel-1B data unavailability on 8 February 2019 February 8, 2019 1:43 pmAn anomaly occurred on the Copernicus Sentinel-1B Optical Communication Payload, resulting in the loss of three data download links through the European Data Relay Satellite System (EDRS), between 03:26 UTC and 09:48 UTC on 8 February 2019.
- Copernicus Sentinel-1B unavailability February 7, 2019 11:31 amCopernicus Sentinel-1B was unavailable from 6 February 2019 at 23:51 UTC to 7 February 2019 at 09:02 UTC, due to a SAR anomaly.
- Copernicus Sentinel-1A collision avoidance manoeuvres on 3 February 2019 February 4, 2019 8:41 amCollision avoidance manoeuvres were executed on Copernicus Sentinel-1A to reduce the risk of collision with a debris, potentially occurring at 20:24 UTC on 3rd February 2019.
- Copernicus Sentinel-1B collision avoidance manoeuvres on 19 January 2019 January 18, 2019 4:11 pmCollision avoidance manoeuvres are planned to be executed on Copernicus Sentinel-1B to reduce the risk of collision with debris, potentially occurring on 19 January 2019 at 11:42 UTC.
- Copernicus Sentinel-1 data fuel Norwegian ground motion service January 10, 2019 12:48 pmLaunched in late November 2018 by the Geological Survey of Norway (NGU), the Norwegian Water Resources and Energy Directorate (NVE) and the Norwegian Space Centre (NSC), InSAR Norway is a service that aims to monitor and measure ground movements on a national scale, using Copernicus Sentinel-1 data.
- Copernicus Sentinel-1A collision avoidance manoeuvres on 4 January 2019 January 7, 2019 7:35 amCollision avoidance manoeuvres were executed on Copernicus Sentinel-1A to reduce the risk of collision with a debris, potentially occurring at 23:08 UTC on 4 January 2019.
- Copernicus Sentinel-1A unavailability December 10, 2018 4:23 pmCopernicus Sentinel-1A was unavailable from 9 December 2018 18:53 UTC to 10 December 2018 08:57 UTC, due to a SAR anomaly.
- Copernicus Sentinel-1A unavailability December 6, 2018 1:56 pmCopernicus Sentinel-1A was unavailable from 5 December 2018 23:45 UTC to 6 December 2018 09:29 UTC, due to a SAR anomaly.
- Copernicus Sentinel-1B unavailability on 26 November 2018 November 26, 2018 12:45 pmCopernicus Sentinel-1B was unavailable on 26 November 2018 from 09:58 to 11:43 UTC, due to the need to perform a reset of the on-board PDHT memory.
- Data Hub maintenance on 5 and 6 November 2018 October 31, 2018 11:58 amAn unavoidable maintenance activity on the core infrastructure hosting the data hub service, involving replacement of switches interconnecting the servers to the rolling archive storage, is scheduled from 13:30 UTC on Monday 5 November to 11:00 UTC on 6 November 2018.
- Copernicus Sentinel-1 catches Norwegian spring floods - in autumn October 30, 2018 10:46 amSpring floods occur when snow melts over large areas in short time periods, often combined with rain-so-called rain-on-snow events that add water, further intensifying snow melt. As their name suggests, such floods typically occur in spring - except for a few weeks ago, when Southern Norway was struck with this phenomenon.
- Copernicus Sentinel-1 reveals new insight on tropical cyclones October 18, 2018 7:01 amA team of experts from the French institutes IFREMER and CLS recently implemented a strategy with ESA, in order to acquire Sentinel-1 images over tropical cyclones, while developing an algorithm that enables the extraction of hurricane characteristics at a very high resolution from space. Information such as the ocean surface wind field provided at 1 km resolution could trigger perspectives for improving hurricane forecast information.
- Sentinel-1A collision avoidance manoeuvres on 25 September 2018 September 26, 2018 7:30 amCollision avoidance manoeuvres were executed on Sentinel-1A to reduce the risk of collision with a debris, potentially occurring at 21:49 UTC on 25 September 2018.
- Copernicus Sentinel maps Florence hurricane flood September 17, 2018 3:31 pmMaking landfall in the US state of North Carolina on 14 September, Hurricane Florence is causing widespread damage and flooding. The Copernicus Sentinel-1 radar mission is being used to map affected areas.