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Galileo Performances: Difference between revisions
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== Galileo Service Level Perfomances== | == Galileo Service Level Perfomances== | ||
From Galileo Mission High Level Definition <ref name="GALHLD"> [http://ec.europa.eu/dgs/energy_transport/galileo/doc/galileo_hld_v3_23_09_02.pdf Galileo Mission High Level Definition], v3, September 2002.</ref> | From Galileo Mission High Level Definition, the performances requirements for each service: <ref name="GALHLD"> [http://ec.europa.eu/dgs/energy_transport/galileo/doc/galileo_hld_v3_23_09_02.pdf Galileo Mission High Level Definition], v3, September 2002.</ref> | ||
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The Commercial Service, | The Commercial Service will be a controlled access service operated by Commercial Service Providers, who will make decisions on the offered services: e.g. integrity data, differential corrections for local areas, etc… which will depend on the final characteristics of the other services offered by Galileo. | ||
==References== | ==References== | ||
Revision as of 11:12, 6 May 2011
| GALILEO | |
|---|---|
| Title | Galileo Performances |
| Author(s) | GMV |
| Level | Basic |
| Year of Publication | 2011 |
Galileo system is a space-based global navigation satellite system (GNSS) that provides reliable positioning, navigation, and timing services to users on a continuous worldwide basis freely available to all.
The Galileo performances are different for each service. For the Galileo Open Service (OS) no specific requirements of integrity are applicable. The performances for horizontal positioning accuracy at 95% for a dual-frequency receiver are 4 m (8 m for vertical accuracy), with an availability of the service of 99%.
In the case of the Galileo Safety of Life (SoL) and the Galileo Public Regulated Service (PRS), the performance requirements include horizontal and vertical accuracy, integrity, continuity and time to alert for different service levels. The availability of the service should be 99.5% for both services.
Galileo Service Level Perfomances
From Galileo Mission High Level Definition, the performances requirements for each service: [1]
| Parameter | Galileo Service Level | |||||||
|---|---|---|---|---|---|---|---|---|
| OS | SoL | PRS | ||||||
| Single-Frequency User (SF) | Dual-Frequency User (DF;E5a/L1) | DF (E5b/L1) | SF | DF (L1/E6) | ||||
| E5a | E5b | L1 | L1 | E6 | ||||
| Lateral accuracy (95%, m) | 24 | 24 | 15 | 4 | 4 | 15 | 24 | 6.5 |
| Vertical accuracy (95%, m) | 35 | 35 | 35 | 8 | 8 | 35 | 35 | 12 |
| Velocity accuracy (95%, m/s) | 0.2 | 0.2 | 0.2 | |||||
| Timing Accuracy wrt UTC/TAI (ns) | N/A | 30 | N/A | N/A | 100 | |||
| Horizontal Alarm Limit (m) | N/A | 12 | N/A | 20 | ||||
| Vertical Alarm Limit (m) | N/A | 20 | N/A | 35 | ||||
| Time-To-Alarm (s) | N/A | 5.2 | N/A | 10 | ||||
| Integrity Risk | N/A | 2.10-7 / 150s | N/A | 2.10-7 / 150s | ||||
| Continuity Risk | N/A | 1-8.10-6 / 15s | N/A | 1-8.10-6 / 15s | ||||
| Availability of Accuracy (%) | 99.8 | 99.8 | 99.8 | |||||
| Availability of Integrity (%) | N/A | 99.5 | N/A | 99.5 | ||||
| Coverage | Global | Global | Global | |||||
The Commercial Service will be a controlled access service operated by Commercial Service Providers, who will make decisions on the offered services: e.g. integrity data, differential corrections for local areas, etc… which will depend on the final characteristics of the other services offered by Galileo.
References
- ^ Galileo Mission High Level Definition, v3, September 2002.