1. GALILEO OVERVIEW AND STATUS Alexandre Steciw Cracow-23 September 2004

2. The European Approach (1)
EGNOS
Civil augmentation to military GPS and GLONASS
Signals distributed through 2 Inmarsat / 1 Artemis Geo Transponders
Interoperable with WAAS and MSAS (ICAO standard, seamless service)
Pre-operational EGNOS Signals already available through EGNOS Testbed since early 2000 – used for tests and demonstrations
Fully Operational Signal in 2004
Initiative of the European Commission, Eurocontrol and ESA
EGNOS is the first contribution of Europe into GNSS and the first step towards Galileo

3. The European Approach (2)
Galileo
Global Navigation Satellite System
Under Civil Control
Independent but compatible and interoperable with GPS and GLONASS
With service guarantees
Target Date to be operational
Initiative of the European Commission and ESA

4. Galileo Services
Galileo Satellite-only Navigation, Positioning & Timing Services (through the Galileo Signal-In-Space):
Open Service (OS) –free and available to the public
Commercial Service (CS) – under commercial conditions
Safety of Life Service (SoL)- for safety-of life applications & users
Public Regulated Service (PRS)- for government authorised users
Support to the Search and Rescue Service (SAR):
406/ MHz transparent Forward Link for COSPAS/SARSAT compatible distress beacons localisation in the COSPAS/SARSAT ground segment
SAR Return Link Messages (Acknowledgement & Coordination) through Galileo Signal in Space

5. Galileo Services Galileo Locally Assisted Services:
Network Assisted/ Location Based Services
Indoor Positioning Services
High Precision Navigation & Positioning Services
Galileo SIS plus Local Augmentations:
Improved safety-of life applications, e.g. for trains & railways, port navigation, precision landing approach etc.
Road applications (predicted adaptive cruise control, tolling etc.)

6. Galileo Services Galileo Combined Services
Galileo + other satellite navigation system (SBAS, GPS, GLONASS,...)
Galileo + other non-satellite navigation systems (LORAN C, mobile systems,…)
Galileo + communications systems (GSM, GPRS, UMTS,…)
EGNOS Services augmenting GPS and complementing Galileo services
Wide area differential corrections for GPS over ECAC region
Real-time Integrity messages for GPS-based Safety-of Life applications
Ionosphere corrections for single-frequency users
Complementary GPS-like ranging signals for improved availability

7. GALILEO Open Services Performance

8. GALILEO SOL Performance

9. GALILEO + GPS Combined Performance
Combined use provides increased performance and availability (RAIM)
for high masking angle, e.g. urban canyons

10. GALILEO Frequency Plan, L-Band
GALILEO Bands (Navigation)
GALILEO SAR Downlink
GPS Bands
E5a/L5
E5b E6 L1 E2 E1
1164 MHz
1214 MHz
1260 MHz
1300 MHz
(*) MHz
MHz
1544 MHz
1545 MHz
1559 MHz
1587 MHz
1591 MHz
1563 MHz
MHz
1215 MHz
1237 MHz
(*) MHz
SAR L2
RNSS Bands
ARNS Bands

11. GALILEO Signals 1278.75 MHz 1575.42 MHz 1176.45 MHz 1207.140 MHz E6
G/Nav Signal:
BOC(10,5) mod.
Rc=5.115 Mcps
C/Nav Signal:
Data + Pilot
BPSK mod.
Rs=1000 sps
MHz L1 E2 E1
BOC(n,m) mod.
I/Nav Signal:
BOC(2,2) mod.
Rc=2.046 Mcps
Rs=250 sps
MHz
L5/E5a
E5b
F/Nav Signal:
Data+Pilot
BPSK mod.
Rc=10.23 Mcps
Rs=50 sps
(MHz)
PILOT CHANNELS
DATA CHANNELS
MHz
Frequency
Frequency

12. GALILEO Signal Parameters
Bands
E5a
E5b E6
E2-L1-E1
Services
OS/SOL/CS
OS/SOL
PRS CS
Channels
Data
Pilot
Ranging Code Rate
(Mcps)
10.23
5.115 m
2.048
Modulation Type
AltBOC
BOC
(10,5)
BPSK
(5)
(n,m)
(2,2)
Symbol Rates
(Bd) 50
N/A
250
---
1000
----
Minimum Received Power on Ground at 10o elevation in dBW
-158
-155
-160 to

13. GALILEO Architecture

14. The GALILEO Satellite Mass at Launch (incl. Propellant)
Power Consumption
Dimensions:
Main Body
Length (with deployed solar arrays)
Lifetime
Ca.680 kg
Ca. 1.6 kW
2700 x 1200 x 1100 mm
13 m
12 years

15. The GALILEO Ground Segment
The Galileo Ground Segment comprises the Ground Control Segment (GCS) and the Ground Mission Segment (GMS) and includes:
A global network of Galileo Sensor Stations (GSS)
A global real-time oriented network of Up-link Stations (ULS) for mission data up-link in C-Band
A global network of Telemetry, Telecommand and Ranging Stations (TT&C) for control of the satellites in S-Band
An interconnecting high performance communication network and
2 geographically redundant Galileo Control Centres (GCC) for all the centralised processing, monitoring & control.

16. The GALILEO Ground Segment Architecture

17. Considered TT&C & ULS Station Sites
Svalbard or

18. Locations considered for Sensor Stations

19. GALILEO Master Schedule
1 Test Satellite & 4 Operational Satellites
Ground Infrastructure
26 Satellites
Routine Operations and Replenishment
Development and Validation
Deployment
Operations and Maintenance
48 months
24 months
20 years

20. The European Commission 6th Framework Programme
Complementing the Development of the Galileo System

21. EC 6th Framework Programme, 1st Call
Development of User Receivers
Development of Local Elements
Preliminary Design of a Local Component Demonstrator
Preliminary Design of SAR G/S Elements, e.g. MEOLUT
Preliminary Design of a Galileo Time Service Provider
Preliminary Design of a generic Galileo Service Centre
Preliminary Design of a generic External Regional Integrity System
Galileo Thematic Support
certification
external interfaces
frequency issues
EGNOS Integration into Galileo
Development of Galileo Business Plan

22. The European Space Agency Galileo System Test Bed Programme
Mitigating the Technical Risk for the Development of the Galileo System

23. ESA GSTB Activities GSTB V.1:
Design and Verification Tool for the mitigation of the Galileo risks related to algorithms
Experimentation framework convoying the experience from European industries, institutes and agencies towards common objectives
A GSTB V1 Processing Centre set-up at ESA/ESTEC, Noordwijk with access to 1-sec observed GPS dual-frequency data from 25 sensor stations worldwide
GSTB V.2:
Protection of GALILEO frequency filings
In orbit atomic clocks experimentation
MEO environment characterisation
Signal experimentation
Two independent contracts are placed with European Industry (GAIN & SSTL) to launch two Experimental Satellites by end of 2005
Experimentation activities are planned to be performed in the frame of the Galileo IOV programme

24. Conclusions
Galileo after EGNOS will provide a further European Contribution into Global Navigation Satellite Systems
Galileo will ensure interoperability with existing systems for the benefits of the users
Galileo will be open for partnerships in other regions
With the approval of the IOV Program for Galileo - Galileo is becoming a reality
Thank you for your attention!