Galileo Aktueller Stand der Entwicklung - GSV Forum Galileo Berglez.pdf · GSV-Forum „Galileo –das europäische Satellitennavigationssystem eine neue Qualität für Nutzer im

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Galileo – Aktueller Stand der Entwicklung

Is there a positive perspective for Galileo?

21st October 2014

TeleConsult Austria GmbH

Dr. Philipp Berglez

GSV-Forum „Galileo – das europäische Satellitennavigationssystem eine neue Qualität für Nutzer im Verkehrsbereich“

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Actual status and problems

• Entering the initial operational capability phase

• Six Galileo satellites currently in orbit

• First launch of Galileo FOC satellites on August 22nd 2014

• Injected into non-nominal orbit

• Problems:

• High elliptical orbit

• Van Allen radiation belt

• High Doppler values

• Navigation message problem

• Fuel is limited

• ESA is investigating the possibilities of exploiting the satellites to

maximum advantage

• Is there a positive perspective for Galileo?

GSV-Forum, Philipp Berglez, 21 October 2014

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The answer must be YES


• Galileo has an user oriented approach

• Different services for civilian use

• Under full civilian control

• Independent from GPS, GLONASS

• Interoperable with other GNSS

• Galileo success story so far

• Suitability of key technologies have been demonstrated

• Exceptionally stable passive hydrogen maser atomic clock – the

most advanced clock ever flown for navigation purposes

• Historic first positioning fix using Galileo only on 12 March 2013.

• Galileo services have been demonstrated

• “Galileo works, and it works well” (ESA 2014)

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First Galileo position fix by TeleConsult Austria

• March 25th, 2013 at 9:09 CET

• Rosenhain, Graz, Austria

• 4 Galileo IOV satellites

• 6 GPS satellites

• Combined Galileo GPS position fix


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Galileo overview


• Space segment

• Circular orbits; 23 616 km above earth (period 14 h 04 min)

• Orbital inclination of 56°

• Three equally spaced orbital planes

• Nine operational satellites, equally spaced in each plane

• One spare satellite (also transmitting) in each plane

• Galileo ground segment

• Galileo Control Center (Oberpfaffenhofen and Fucino)

• Telemetry, Tracking and Command Stations

• Uplink Stations

• Sensor Stations

• User segment

GCC in Oberpfaffenhofen

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Galileo services


Open Service

Commercial Service

Safety of Life Service

Public Regulated

Service

Search and Rescue

Service

Free to air; Mass market; Simple

positioning; Basic integrity

Encrypted; High accuracy;

Guaranteed service;

Authentication

Open Service + Integrity of signal

Encrypted; Continuous

availability; Resistant signals

Near real-time; Precise; Return

link

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Galileo signals and services


Not to scale

E5a (L5) E5b L2 G2 E6 E2 L1 E1 G1

ARNS Bands ARNS Bands

RNSS Bands RNSS Bands

Galileo Bands GPS Bands (current and

modernised)

GLONASS Bands (current and

modernised)

OS

SoL

OS

SoLCSPRS

OS

SoLPRS

• 10 different signals in 3 bands

• Data and pilot signals for better tracking capabilities

• Sharing some frequency bands with other GNSS

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Vulnerability & GNSS threats


• GNSS Security Threats

• Jamming, spoofing, meaconing

• Volpe Report 2001: Vulnerability assessment of the transportation

infrastructure relying on GPS

• Countermeasures

• Galileo signal design

• Signal processing algorithms

• Data processing algorithms

• Projects at TeleConsult Austria

• Detection, classification and localization of jammers and spoofers

• Position and signal authentication

• Galileo Public Regulated Service signal simulation

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Not just an urban legend


• Reports on jamming and spoofing attacks increased during past years

• Mainly in North America and Asia

• Degradation of performance or denial of service

• Especially a problem for safety critical GNSS applications

• Field tests in August 2014 in the area of Graz

!

A2

A9

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The threats are real


• Field tests in Austria revealed that the threats are real

• Within the first hour of the test the first jammer was detected

• Significant drop of accuracy during jamming event

• Caused by personal privacy device installed in truck/car

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Benefit of Galileo signals – Typical Jammer (1/2)


• PRS signals designed to be resistant against jamming and spoofing

• CS signals provides high accuracy and authentication service

• Simulation of jamming scenario

Ref: www.navigadget.com, www.infostream.biz

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Benefit of Galileo signals – Typical Jammer (2/2)


• Comparison of GPS C/A, Galileo OS, and Galileo PRS performance

during jamming event

• No GPS position solution during jamming event

• Galileo OS performance decreased

• Galileo PRS performance unaffected

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Global Navigation Satellite Systems

GPS

GLONASS

Galileo

BeiDou/COMPASS

EGNOS, WAAS, MSAS, GAGAN, SDCM, etc.

QZSS


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Situation some years ago

1 System and 1 Signal


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Situation some years ahead

4 Systems and > 40 Signals + Augmentation Systems


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Conclusions


• Benefit of Galileo through

• Service oriented concept

• Civil control

• New signal structures

• Improved accuracy

• Improved availability

• Improved resistance against jamming/spoofing

• Combination/Interoperability with other GNSS

• Current problems are challenges and will result in new innovations

• “Galileo works, and it works well” (ESA 2014)

1721st October 2014

Dr. Philipp Berglez

GSV-Forum „Galileo – das europäische Satellitennavigationssystem eine neue Qualität für Nutzer im Verkehrsbereich“

ADDRESS Rettenbacher Straße 22, 8044 Graz, Austria

E-MAIL [email protected]

WEB www.tca.at

PHONE +43-316-890971-14

FAX +43-316-890971-55

Documents

Galileo Aktueller Stand der Entwicklung - GSV Forum Galileo Berglez.pdf · GSV-Forum „Galileo –das europäische Satellitennavigationssystem eine neue Qualität für Nutzer im