If you wish to contribute or participate in the discussions about articles you are invited to contact the Editor
EGNOS Space Segment
| EGNOS | |
|---|---|
| Title | EGNOS Space Segment |
| Author(s) | GMV. |
| Level | Basic |
| Year of Publication | 2011 |
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.
Inmarsat’s Third Generation satellites carry a navigation payload which is used by EGNOS.[1]
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]