Satellite navigation at the service of science

Satellite navigation at the service of science https://i0.wp.com/www.eresviral.com/wp-content/uploads/2018/11/La-navegación-por-satélite-al-servicio-de-la-ciencia.jpg?fit=260%2C116&ssl=1

Satellite navigation at the service of science







Satellite navigation systems bathe our planet with its signals. In addition to making our daily lives easier, these signs also serve for the most advanced science. A new installation of the ESA, located in the European Center for Space Astronomy (ESAC), near Madrid (Spain), advocates its use in all types of applications, from Earth monitoring to fundamental physics.



The new Scientific Support Center for Global Navigation Satellite Systems (GSSC) of ESA is based at the European Space Astronomy Center (ESAC), a few kilometers from Madrid. Managed by the Galileo Science Office, the GSSC integrates the satellite navigation and information infrastructure to offer advanced data processing services to the scientific community.



Synchronized with a precision of billionths of a second and very stable, satellite navigation signals can be used as a point of reference for numerous scientific sectors, such as atmospheric and Earth sciences, astronomy, precision metrology and the study of relativity and other issues of fundamental physics.



According to the current plans for satellite navigation infrastructures, more than 120 satellites of this type will soon be in orbit. The European Galileo constellation is included in the calculation, with unique characteristics, such as atomic clocks for passive hydrogen masses with high stability, multiple transmission frequencies, wide bandwidth and on-board laser retroreflectors. All this allows to identify the position of the satellites with a precision of few decimeters.







GNSS scientific support center. (Photo: ESA)



"The scientific potential of navigation has been widely recognized for a long time," explains Javier Ventura-Traveset, director of Galileo's Science Office. Our office was founded in 2016, as a joint initiative between ESA's Science and Navigation directorates, to coordinate scientific opportunities through interaction with the scientific community and the GNSS Scientific Advisory Committee.



"The inauguration of this new facility is the next step. It is the concrete response of ESA to the need expressed by the scientific community to have a single place that offers researchers long-term GNSS data, results of scientific experiments and services that improve scientific research and GNSS collaboration. "



"The future evolution of the center will advance thanks to the interaction and the response received from the scientific community, and synergies will be maximized with GNSS data service providers from other institutions and research organizations."



Among the activities that the new GSSC will support is the processing of big data with large amounts of satellite navigation data, the massive collaboration for meteorological monitoring and the scientific evaluation of the performance of satellite navigation in Antarctica.



It will also contribute to the continuous measurement of general relativity with Galileo satellites 5 and 6 and will serve as a global data center for the International GNSS Service (IGS). The veteran Navipedia website, which offers technical information on satellite navigation, is also hosted by the GSCC.



One of the first to receive the news with enthusiasm has been the ESA Navigation Support Office, based at the ESOC mission control center in Darmstadt (Germany) and responsible for supporting the mission teams that they use this type of navigation to direct the satellites.



"The GSSC is welcome among the activities of ESA for the science of satellite navigation," says Werner Enderle, director of the Navigation Support Office of ESOC. The GSSC already presents GNSS products generated by the ESOC team, including observations from our network of EGON ground stations and accurate satellite orbits generated through its pioneering software. Our two teams are eager to continue collaborating for the benefit of ESA and the scientific community. "



Over the next few months, the GSSC will expand access to data, products and services. (Source: ESA)

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