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==The ESA Artemis Satellite-Navigation Mission==
==The ESA Artemis Satellite-Navigation Mission==


'''ESA Artemis Navigation Payload'''
The ESA ARTEMIS satellite is not an ordinary telecommunications satellite. It incorporates new, advanced technologies that expand and improve all areas of navigation, mobile communication and satellite-to-satellite communications. Having reached its final orbital position on 31January 2003, ARTEMIS soon began delivering its planned data-relay, land-mobile and navigation services. In particular, its L-band land mobile payload is being used to complement and augment the European Mobile System, its data-relay payloads are being prepared to provide operational services to ENVISAT and SPOT-4, and its navigation payload a major operational element of the European Global Navigation Overlay Service (EGNOS).<ref name=" The ESA ARTEMIS Satellite Navigation Mission">The ESA ARTEMIS Satellite Navigation Mission: In Orbit Testing and use in EGNOS; J. Ventura-Traveset, P.Y. Dussauze, C. Montefusco, F. Toran, ESA GNSS-1 Project Office; C. Lezy , F. Absolonne, B. Demelenne, European Space Agency (ESA), ESA Redu Station; A.Bird; ESA, ARTEMIS Project, ESA ESTEC </ref>


==Notes==
==Notes==

Revision as of 14:52, 4 May 2011


EGNOSEGNOS
Title EGNOS Space Segment
Author(s) GMV.
Level Basic
Year of Publication 2011
Logo GMV.png


The EGNOS space segment is composed by three geostationary satellites centred over Europe:

  • Inmarsat-3 AOR-E (Atlantic Ocean Region East) stationed at 15.5° W.
  • Inmarsat-3 IOR-W (Indian Ocean Region West) stationed at 25.0°E.
  • ESA-Artemis stationed at 21.5° E.

The main criteria followed in the selection of the satellites positions have been:

  • Improve the measurement geometry and hence the system availability.
  • Maximise the visibility angle diversity and hence minimise the risk of signal blocking.
  • Provide dual geostationary coverage (minimum) within the core service area.

The Inmarsat-3 Satellite-Navigation Mission

Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS.[1]

Inmarsat-3 Navigation Payload block diagram

The ESA Artemis Satellite-Navigation Mission

The ESA ARTEMIS satellite is not an ordinary telecommunications satellite. It incorporates new, advanced technologies that expand and improve all areas of navigation, mobile communication and satellite-to-satellite communications. Having reached its final orbital position on 31January 2003, ARTEMIS soon began delivering its planned data-relay, land-mobile and navigation services. In particular, its L-band land mobile payload is being used to complement and augment the European Mobile System, its data-relay payloads are being prepared to provide operational services to ENVISAT and SPOT-4, and its navigation payload a major operational element of the European Global Navigation Overlay Service (EGNOS).[2]

Notes

References

  1. ^ The Inmarsat-3 Satellite Navigation Payload; George V. Kinal and Oleg Razumovsky, Inmarsat, London
  2. ^ The ESA ARTEMIS Satellite Navigation Mission: In Orbit Testing and use in EGNOS; J. Ventura-Traveset, P.Y. Dussauze, C. Montefusco, F. Toran, ESA GNSS-1 Project Office; C. Lezy , F. Absolonne, B. Demelenne, European Space Agency (ESA), ESA Redu Station; A.Bird; ESA, ARTEMIS Project, ESA ESTEC