Galileo - ISMR Query Tool

Galileo Information Center for Latin
America /
Application of the ISMR Query Tool in
the analysis of Ionospheric Scintillation
from Galileo Satellites
Bruno César Vani
Raul Ramos
Programa de Pós-graduação em Ciências
Cartográficas, Universidade Estadual Paulista Júlio
de Mesquita Filho
Centro de Información Galileo para
América Latina
CALIBRA DAY – 09/05/2014
Outline
• Part 1: Galileo Information Center Latin America
– Participating Institutions
– Goals
– Galileo / Egnos
– Conclusions
• Part 2: Application of the ISMR Query Tool in the
analysis of Ionospheric Scintillation from Galileo
Satellites
– Galileo data at CIGALA/CALIBRA Network
– Exploratory Data Analysis with ISMR Query Tool
– Future work
– Remarks
Centro de
Información Galileo
para América Latina
Centro de
Informações Galileo
para a América Latina
Part 1:
Galileo Information Center
Latin America
www.galileoic.org
Centro de
Información Galileo
para América Latina
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Informações Galileo
para a América Latina
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of special interest for
LATAM on GNSS as
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reality
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participate on GNSS
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Informações Galileo
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Aerocivil – Bogotá Nov 2012
DGAC
Chile - Nov 2013
COCESNA – Salvador May 2013
Europe’s contribution to satellite
navigation consists of two systems
EGNOS
–
–
–
–
Overlay system
Improves GPS performance
European coverage
3 services
Galileo
–
–
–
–
Autonomous infrastructure
Performances similar to GPS
Global coverage
5 services
‘It’s there, use it’
Galileo enhances Europe’s
technological independence
•
•
•
•
The first global satellite positioning,
navigation, and timing system, designed and
operated under civil control
As of 2008, financed entirely by the European
Union and managed by the European
Commission
Provides Europe independence from other
similar systems and greater robustness
Targeted to be interoperable with other GNSS
to facilitate their combined use and to offer
better performances for all kinds of user
communities worldwide
Centro de
Información Galileo
para América Latina






Centro de
Informações Galileo
para a América Latina
The first two operational satellites were launched on 21
October 2011
The third and fourth Galileo satellites, completing the
IOV quartet, were launched on 12 October 2012
All industrial contracts necessary to ensure early Galileo
services in 2014 have been signed
To accelerate Galileo’s deployment and to further contain
costs, the following contracts were signed on 2 February
2012:
 Additional order for 8 satellites (total of 26)
 Adaptation of Ariane-5 for Galileo
 Booking of one Ariane-5
The first positioning test based on the 4 first operational
Galileo satellites was conducted by ESA on 12 March 2013
Next two satellites currently (2014Q2) in test stage
Centro de
Información Galileo
para América Latina
 EGNOS Open Service is
operational since October
2009
 Its Safety of Life service
has been declared
operational in March 2011
 Around 100 approach
procedures making use of
EGNOS for aircraft
landings approved in
Europe
Centro de
Informações Galileo
para a América Latina
LPV: Localizer Performance with Vertical guidance
Galileo services
Early services for OS, SAR and PRS will be provided from 2014
Conclusions
EGNOS is operational
• EGNOS OS since October 2009
• EGNOS SoL service since March 2011
• EGNOS Data Access Service since July 2012
Galileo is taking off
• All procurement contracts awarded
• First four operational Galileo satellites launched in
October 2011 and in October 2012
• Deployment is being accelerated
• First positioning test on 12 March 2013
• Early Galileo OS/SAR/PRS services from 2014
• Early Galileo CS services from 2016
International coordination is key
• Ensure compatibility with other GNSS as a minimum
• Achieve interoperability when desired
• Fostering uptake of EGNOS and Galileo worldwide
through applications development
Part 2:
Application of the ISMR Query
Tool in the analysis of
Ionospheric Scintillation from
Galileo Satellites
Galileo data
CIGALA/CALIBRA Network
•
•
•
•
time, azimuth, elevation
S4, Sigma-phi
TEC (based on the L1BC and E5a pseudoranges)
dTEC (the change of TEC over the four 15-s intervals
during the last minute, computed from carrier phase
measurements)
• Code-phase divergence: average and standard deviation
of code/carrier phase divergence
• Locktime
• and others..
Frequencies:
– L1BC
– E5a
– E5b
Analysis of Galileo data
ISMR Query Tool
Galileo daily coverage at IPP
Elev cuttoff 10º
Galileo daily coverage at IPP
Elev cuttoff 10º
Orbital Repeatibility
Galileo 19
Day 1
Day 2
....
GPS 5
GLONASS 13
Image: http://www.esa.int/spaceinimages/Images/2000/10/Galileo
Classification Thresholds
For convenience:
Weak : S 4  0.3
Moderate : 0.3  S 4  0.6
Strong : S 4  0.6
Comparison: 2013
GPS, GLONASS, Galileo
Examples – Station FORT
Window size: 30 min
S4 L1 - Jan/2014
Elev cuttoff 10º
Lin et al. (2003, 2004)
2014-01-23 23:00 ~ 2014-01-24 01:00
2014-01-23 23:00 ~ 2014-01-24 01:00
2014-01-23 23:00 ~ 2014-01-24 01:00
Exploratory Analysis
Exploratory Analysis
Satellites availability
Satellites availability
Remarks
• Capability on:
– identifying high ionospheric scintillation
periods in the region of the network
– Performing constellation comparisons
• Specific analysis which support:
– substantiation of new hypothesis about
ionospheric scintillation
– Integration of Systems
Future work
• Ionospheric modeling with Galileo
– Add Galileo capabilities on prediction models
or mitigation approaches under development
• Positioning with Galileo
– Enjoy the Multi-GNSS Experiment (MGEX)
initiative of IGS
– Investigation on Multi-GNSS positioning
• Modeling
• Integration on UNESP’s in house software
Acknowledgements

EGNOS Open Service is operational
since October 2009

Its Safety of Life service has been
declared operational in March 2011

Since December 2011, the EGNOSbased LPV procedures at Alderney
airport (Channel Islands) are the first in
Europe able to being used for revenue
services in commercial flights

Around 100 approach procedures
making use of EGNOS for aircraft
landings approved in Europe

The EGNOS Data Access Service
(EDAS) was declared in July 2012
LPV: Localizer Performance with Vertical guidance
Galileo system architecture
5 mission
uplink
stations
5 TT&C
stations
Constellation of
30 MEO satellites
Users & service providers
2 control centres
IOT centre
2 launch and early
operations centres
16-20 Galileo
sensor stations
MEO: Medium Earth Orbit
TT&C: Telemetry, Tracking and Command
IOT: In-Orbit Testing