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EGNOS Space Segment

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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

ESA Artemis Navigation Payload

Notes

References

  1. ^ The Inmarsat-3 Satellite Navigation Payload; George V. Kinal and Oleg Razumovsky, Inmarsat, London