The European Union Agency for the Space Programme (EUSPA) has awarded GMV a framework contract to advance the Galileo Reference Centre (GRC), a key facility for monitoring and evaluating the performance of the Galileo satellite navigation system. Located in Noordwijk, the Netherlands, the GRC independently assesses Galileo’s operations, signal quality, and user-level service performance and compares its performance with that of other GNSS.
The upcoming GRC V2 version will introduce real-time monitoring capabilities, enhancing EUSPA’s ability to oversee GNSS services. This evolution will support additional Galileo services, including:
Signal Authentication Service (SAS): Strengthening trust in Galileo signals.
Time Dissemination Service: Enabling precise synchronization for critical infrastructure.
Search and Rescue (SAR): Improving emergency response operations.
Emergency Warning Satellite Service (EWSS): Facilitating public alerts for natural disasters and emergencies.
Key operational improvements in GRC V2 include:
Enhanced monitoring using data from multiple institutions.
Real-time processing for faster user notifications.
Seamless system upgrades without disrupting operations.
Advanced cybersecurity measures integrated into a platform-as-a-service model.
The upgraded GRC is expected to be operational by 2026 without impacting ongoing functions.
Galileo Second Generation Batch#1A satellites. (Image: ESA).
Successful European Cooperation
Galileo is Europe’s civil global satellite navigation constellation and a major success, being the world’s most precise satnav system and offering meter-scale accuracy to more than two billion users around the globe.
The signature of the Financial Framework Partnership Agreement (FFPA) on June 22, 2021, further strengthened effective cooperation between the European Commission (EC), the European Union Agency for the Space Program (EUSPA), and the European Space Agency (ESA) — key to successfully achieving a crucial EU Space Program component like Galileo in the current EU Multi Financial Framework (2021–2028).
The EC is the program manager, with EUSPA acting as the exploitation manager and ESA as the system development prime.
Stable Service Performance
Galileo continues to deliver excellent service performance every month in a safe, secure and seamless manner. Delivery of Galileo services is managed by EUSPA, as the Galileo service provider, with industrial partner SpaceOpal, the Galileo service operator prime contractor. The performance of Galileo services is independently monitored by the Galileo Reference Center (GRC) and regularly published on the GNSS Service Center (GSC) web portal at www.gsc-europa.eu — both agencies were developed by GMV. The security of the Galileo System is monitored by the Galileo Security Monitoring Centers (GSMC), operated by EUSPA.
With 22 satellites in service, the open service is already delivering more than 99% availability of PDOP <= 6 worldwide. This, together with the excellent ranging accuracy, suggests that most Galileo dual-frequency users are typically experiencing positioning accuracy in the order of only 2 to 3 meters.
Timing users also continue to receive accurate (in the order of 5 ns) access to Galileo System Time, which they can trace to Universal Coordinated Time (UTC) through the corresponding offset parameters transmitted by the satellites.
The SAR/Galileo service, contributing to COSPAS/SARSAT, continues to deliver both the Forward Link Service (FLS) and the Return Link Service (RLS) with more than 99% availability, allowing users in distress not only to issue an alert and be located within a few minutes, but also be notified that the alert was successfully processed and rescue is on the way. The SAR/Galileo control center is located in Toulouse (France) and operated by CNES under the authority of EUSPA. The excellent performance of the service has been demonstrated both through several rescue exercises and real-life emergencies.
Performance of Galileo positioning services. (Credit: EUSPA)
Performance of Galileo positioning services. (Credit: EUSPA)
Galileo Launch 11
Soyuz launcher VS-26 lifted off from French Guiana with the first pair of Galileo Batch 3 satellites on Dec. 5, 2021, at 01:19 CET. This marks the 11th Galileo launch of operational satellites in 10 years: a decade of hard work by Europe’s Galileo partners and European industry. With these satellites, the robustness of the constellation has increased, guaranteeing a higher level of service.
Thanks to an upgrade of the Ground Control Segment, the Launch and Early Orbit Phase has been for the first time conducted directly from the Galileo Control Center, rather than requiring an external mission control site. This version of the ground segment increases overall reliability and cybersecurity and opens the way to significant expansion of the Galileo constellation, allowing command and control of up to 38 satellites. The development has been performed by an industrial consortium led by GMV, harnessing state-of-the-art technology using the latest solutions on the market.
Galileo launch 11 from Europe’s spaceport in French Guyana. (Photo: ESA)
On Route to Full Operational Capability
This year will pave the way toward Full Operational Capability of Galileo services.
Industrial prime contractor OHB Systems has nearly completed production of the additional 10 recurrent satellites belonging to Galileo Batch 3. Six of them are undergoing final acceptance testing at the ESA satellite test center, and the other four are under integration at the satellite prime facilities.
Preparation for Launch 12 has already started, with the satellites’ acceptance for a launch date planned in the first months of 2022, followed by Launch 13 in autumn. This is leading toward completion of the Galileo constellation, providing an increased availability of the Galileo signal in space for both GNSS and search-and-rescue users.
Performance of Galileo timing and search-and-rescue services. (Credit: EUSPA)
Performance of Galileo timing and search-and-rescue services. (Credit: EUSPA)
From 2023 onward, the remaining Batch 3 satellites will be launched with the new Ariane 62 launch vehicle, a variant of Ariane 6 with two strap-on solid boosters. The launcher is undergoing the final stages of development, led by prime contractor ArianeGroup.
The Galileo Ground Mission Segment will undergo a complete technological refresh, including hardware virtualization and porting of several million lines of code, performed by an industrial consortium led by Thales France. A series of improvements will be introduced to increase system resilience, including an extended mode of operation to improve service continuity and robustness.
Cybersecurity monitoring of all the ground assets will be introduced as an overlay to the current ground infrastructure. The upgrade will undergo a rigorous level of qualification testing followed by worldwide deployment in a seamless way in both Galileo control centers, in both Galileo security monitoring centers, and at all remote locations without affecting continuity of service.
The service facilities that contribute to the delivery of Galileo services (the European GNSS Service Center, the Galileo Reference Center, and the SAR data service providers) will also evolve to support not only the transition from Initial Services to Full Operational Capability, but also the early roll-out of service evolutions. In this regard, extensive work is ongoing to deliver an exciting set of improvements, some of which are already in development or testing, to reach the users in the year to come:
Improvements of the I/NAV signal to increase robustness and time-to-first-fix, while assuring full backward compatibility with legacy receivers.
OS Navigation Message Authentication (OS-NMA) to support applications that require trust in the authenticity of the data transmitted by the Galileo satellites (a public observation campaign was launched in November 2021 to engage stakeholders and collect their feedback before moving to the initial service provision).
An initial phase of the High Accuracy Service, delivering corrections in the Galileo E6 signal and over terrestrial network to allow users to perform precise point positioning over Europe; test signals were already transmitted with promising results.
A Search and Rescue Beacon Command Service complementing the SAR Return Link, providing improved capabilities to timely locate beacons under authorized emergency situations (such as the disappearance of Flight MH370 in the Indian Ocean in 2014).
A first implementation of an Emergency Warning Service over Europe, allowing the authorized national emergency-management authorities of the EU Member States to relay alert messages through Galileo signals, which can reach target areas even in case of disrupted terrestrial communications (such as due to floods or earthquakes).
Galileo worldwide ground segment. (Credit: ESA)
Second Generation in the Making
The FFPA will bring Galileo to the next level with the development of the second generation, a further step forward with the use of many innovative technologies to guarantee the system’s unprecedented precision, robustness and flexibility.
In parallel to the completion of the first generation of Galileo, Europe has conducted in recent years preparation activities for the Second Generation (G2). Elaborating on market, user and exploitation needs collected by EUSPA, ESA identified a number of system evolution scenarios, which were discussed among relevant EU stakeholders to select the second-generation mission and services baseline to build the system infrastructure.
The evolution of Galileo capabilities will not only provide better services through advanced technical solutions identified by ESA, but will also ensure continuity of service and backward compatibility for
first-generation legacy users.
Two parallel contracts to develop and manufacture each of the six Galileo Second Generation Batch#1 satellites were kicked off in the first half of 2021 with Thales Alenia Space (Italy) and Airbus Defence & Space (Germany). The new G2 satellites will be constructed on a short time scale, with their first launch via Ariane-62 expected in less than four years, allowing them to commence operations in space as soon as possible. Both contracts have already undergone preliminary design reviews.
Development of the G2 satellites is supported by the Galileo Payload Test Bed, which provides an early proof-of-concept of the advanced G2 payload architecture. These satellites will provide, among others, the following key innovations:
Reconfigurable fully digital navigation payload.
Point-to-point connection between satellites by Inter-Satellite-Link for command and control and ranging functionalities.
Electric propulsion for orbit-raising capabilities.
Advanced jamming and spoofing protection mechanisms to safeguard Galileo signals.
System and Ground Segment definition studies, together with the associated technology pre-developments, have been performed, leading to the definition of the preliminary design and technical requirement baseline for the G2 system, a project involving most of Europe’s space industrial partners.
The G2 In-Orbit Validation Ground Segment and System Test Bed have been defined and relevant procurement procedures are ongoing, with these objectives:
G2 Batch#1 satellites launch and early orbit phase, in-orbit testing and enhanced legacy services provision.
G2 new capabilities in-orbit validation, including prototyping and validation of all the novel technologies that can exploit the full capabilities of the G2 Batch#1 satellites.
Galileo Second Generation Batch#1B satellites. (Image: ESA).
Definition activities for the G2 Initial Orbit Capability (IOC) are progressing well and are expected to converge in the first half of 2022, in order to establish the future roadmap for new G2 services provision in the years to come.
2022 will be a key year for the evolution of Galileo Second Generation activities, through the consolidation of the first batch of G2 satellite design and development activities and the start of development of associated G2G IOV Ground Segment and System Test Beds.
A bright future awaits Galileo, both through the completion of its Final Operational Capability and the start of evolution towards Galileo Second Generation.
Guerric Pont is Galileo Exploitation Program manager for the European Union Agency for the Space Program (EUSPA).
Marco Falcone is Galileo First Generation Project manager for the European Space Agency (ESA).
Miguel Manteiga Bautista is Galileo Second Generation Project manager for the European Space Agency (ESA).
Delegates from the UN’s International Committee Global Navigation Systems (UN ICG) at the entrance to ESA’s ESTEC Test Centre, used to test the last 22 Galileo satellites. (Photo: ESA)
The UN ICG group visited ESTEC on May 16 during a meeting in the Netherlands.
News from the European Space Agency (ESA)
Members of the United Nations (UN) technical group supporting global cooperation in satellite navigation toured ESA’s technical centre in the Netherlands to see key facilities used to develop Europe’s Galileo system.
Delegates from the UN’s International Committee on Global Navigation Systems (UN ICG) met in mid-May at the nearby Galileo Reference Centre, operated by the GSA, European Global Navigation Satellite Systems Agency.
ESA, one of the founding members of the ICG in 2005, invited them to visit the agency’s European Space Research and Technology Centre, ESA’s single largest establishment and home to its Navigation Directorate.
Javier Benedicto, ESA’s Galileo program manager was joined by Rodrigo Da Costa, GSA’s Head of Exploitation, in giving the visitors a hearty welcome. “I’m honored to work with the amazing team of engineers and managers responsible for developing the Galileo system,” Benedicto said. “The laboratory and testing facilities here are very much at the heart of Galileo development.”
ESA’s Receiver Testing Facility is the historic location of the first Galileo positioning fix in 2012. (Photo: ESA)
“I’m very happy to welcome members of the UN ICG group, doing a great job in bringing navigation satellite system operators together, to share achievements and challenges and encourage interoperability – our users love our systems working together.”
The tour began at ESA’s Receiver Testing Facility — historic location of the world’s very first Galileo positioning fix back in 2012 – equipped with a multitude of specialized satnav receivers for not only Galileo satellites but also the US GPS, Russian Glonass, Chinese BeiDou, India’s NAVIC and Japanese QZSS systems, together with augmentation systems such as Europe’s own European Geostationary Navigation Service, EGNOS. The signals from all these systems can also be recorded to very high fidelity for subsequent investigation or reuse.
Lab simulation systems can recreate all these outputs in combination to test receiver systems across a huge range of scenarios, such as amid interference induced by a solar storm, or to see how receivers cope while flying, or even in orbit.
Smartphone receivers can be assessed with simulated augmentation from cellular network stations, wifi mapping or inertial navigation, while simulating their user’s continuous motion. The flexibility the facility’s simulators offer also allows early testing of enhancements planned for next decade’s ‘Galileo Second Generation’ satellites.
“Our aim is to go closer to the market, and how they’re doing things because how current services are being exploited is very important for developing the next generation,” said Olivier Smeyers of ESA’s Commercial User Segment Section.
This table in ESA’s Galileo Payload Laboratory comprises a replica Galileo In-Orbit Validation satellite payload (other than its atomic clocks, which are housed separately nearby). Kept in cleanroom conditions at ESTEC in the Netherlands, it is employed for ground-based testing or anomaly investigation. (Photo: ESA)
Next came the Galileo Processing Centre, which provides ESA with continuous monitoring of Galileo services. It functions independently from the rest of the global Galileo infrastructure, to allow independent assessment of its performance, down to individual satellites and the onboard atomic clocks at the heart of the system — working closely with facilities such as the Galileo Time Validation Facility in Spain and the Galileo Control Centres in Germany and Italy.
The group was also shown ESA’s Time and Metrology Facility: an ensemble of six high-performance atomic clocks sufficiently stable to monitor the nanosecond-scale performance of Galileo System Time, and since 2012 maintaining their own timescale called UTC (ESTC), employed in turn to help set Coordinated Universal Time (UTC) — the world’s global time.
The cleanroom environment of the Galileo Payload Laboratory contains the same atomic clocks flown aboard Galileo satellites with the rest of its navigation payload, used to replicate any performance anomalies identified in orbit and make early tests of Galileo Second Generation design improvements.
“ESA is a very active member of UN ICG,” commented Rafael Lucas Rodriguez of ESA’s Galileo Services Engineering Unit and tour organizer. “We’re currently co-chairing an ICG working group on system performance enhancement and supporting the European Commission and GSA on all Galileo-related technical matters discussed at the committee.”
An aerial view of ESTEC. The Erasmus building is at front right. The T building (home to ESA’s Galileo team) is in the foreground.
The Galileo Reference Centre (GRC), the new state-of-the-art performance monitoring hub for the European Union’s global satellite navigation system, was officially inaugurated May 16 in Noordwijk, the Netherlands.
The ceremony was presided by Dutch Minister of Infrastructure and Water Management Cora van Nieuwenhuizen and European GNSS Agency (GSA) Executive Director Carlo des Dorides, among others.
GSA Executive Director Carlo des Dorides (right), Dutch Minister for Infrastructure and Water Management Cora van Nieuwenhuizen, and DG GROW Deputy Director-General Pierre Delsaux at GRC inauguration. (Photo: GSA)
“The Galileo Reference Centre is a state of the art facility that underpins Galileo service provision,” des Dorides said. “The GRC will be instrumental in monitoring the performance of the system and of the service operator, ensuring that users benefit from the most reliable satellite data and, at the same time, disclosing new service potential.”
“I am proud of the fact that the Galileo Reference Centre is located in the Netherlands,” van Nieuwenhuizen said. “The data provided by Galileo will enable us to navigate with an accuracy to within 20 centimeters. In rescue operations, this sharp reduction in response time is going to save human lives.”
Independent monitoring ensures quality for users
The GRC is a cornerstone of service provision for Europe’s Galileo satellite constellation and plays an important role in Galileo’s operations, providing the GSA with an independent means of evaluating the quality of the signals in space and the performance of the Galileo Service Operator (GSOp). In so doing, it helps ensure the provision of high-quality satellite data so users can better rely on and benefit from Galileo.
Managed by the GSA, the GRC is comprised of a core facility in Noordwijk and contributions from EU Member States, Norway and Switzerland. From the core facility, the GRC generates performance evaluation products and reports using data collected in-house and through cooperation with Member States. The Centre also performs dedicated campaign-based analyses to support investigation of any service performance issues and reports on its findings.
In this two-pillar approach, the GRC benefits from and contributes to maintaining long-term competence and expertise at the Member State level, and actively integrates contributions from the EU Member States, Norway and Switzerland to support daily operations and specific campaigns.
The GSA has established agreements with two beneficiaries, one led by the French Space Agency (CNES) and the other by the Netherlands Aerospace Centre (NLR), and 23 organizations from 14 different countries. Member State contributions include data from networks of reference stations and campaigns using vehicles, vessels and airplanes, and reference products.
The GRC is fully independent of the system and the Galileo Service Operator with respect to its operations.
Since June 2017, GRC operations were hosted and operated from a temporary facility at ESTEC, the neighbouring ESA technical centre, which was instrumental in the swift ramp-up of competences. In April the GRC moved to its new home.
Earlier in May, the GRC hosted representatives from US GPS, Russian Glonass, Chinese BeiDou, Japanese QIS and Galileo to discuss the creation of an authoritative international GNSS monitoring and assessment system to benchmark the performance of available GNSS. The meeting was organised through the International GNSS Monitoring and Assessment Task Force of the United Nations Office of Outer Space Affairs (UNOOSA), International Committee on GNSS (ICG).
The Galileo Reference Centre (GRC), which will be established in the Netherlands, will play a crucial role in monitoring Galileo’s performance. The European GNSS Agency (GSA) made the announcement during this week’s European Space Solutions conference in The Hague.
With Galileo Initial Services set to be declared this year, the GRC will play a pivotal role in the programme’s operations, the GSA announced during the 4th European Space Solutions conference in The Hague.
The Galileo Reference Centre (GRC) will be established in Noordwijk, the Netherlands. The GRC’s core mission is to perform independent monitoring of Galileo’s performance and report on its findings.
GRC’s core facility in Noordwijk will also actively integrate contributions from the EU Member States Norway and Switzerland. The core facility is charged with generating performance evaluation products, reporting and performing dedicated campaign-based analyses. It will also rely on a range of facilities and expertise available in the Member States.
The GRC will be implemented using a versioning approach. The first step is expected to be in place at the time of declaration of Galileo Initial Services. The core facility is set to become operational in 2017.
“The use of space data is becoming more urgent and relevant in many areas, for example in maritime safety and smart mobility,” said Melanie Schultz van Haegen, Dutch Minister of Infrastructure and the Environment. “The Galileo Reference Centre will help ensure the provision of high quality satellite data so users can better rely on and benefit from Galileo.”
“When operational, the GRC will provide the GSA with an independent system to evaluate the performance of the Galileo Service Operator and the quality of the signals in space,” said GSA Executive Director Carlo des Dorides. Dorides and van Haegen were joined by Elżbieta Bieńkowska, European Commissioner for Internal Market, Industry, Entrepreneurship and SMEs, to officially sign the GRC hosting agreement during the conference’s opening session.
The GRC in Brief
Galileo is Europe’s global navigation satellite system (GNSS), operated and maintained by the Galileo Service Operator, under contract with the European GNSS Agency (GSA).
The Galileo Service Operator is responsible for ensuring that the programme complies with the Galileo Services performance requirements.
The Galileo Reference Centre (GRC) is one of the Galileo Service Facilities: a facility to support the provision of services to the Galileo Core System and the Galileo users.
The GRC is operated by the GSA: it provides the GSA with an independent means of evaluating the performance of the Galileo Service Operator and the quality of the signals in space.
The GRC is fully independent of the system and the Galileo Service Operator with respect to both the technical solution and operations
The GRC is comprised of both a core facility and contributions available at EU Member States, Norway and Switzerland.
The core facility, located in Noordwijk (The Netherlands), is charged with:
generating performance evaluation products and reports using data collected by itself and through cooperation with Member States;
performing dedicated campaign-based analyses to support investigations of service performance and service degradations;
making use of the GRC’s own data, products and expertise.
Data and products from cooperating entities from the Member States support both daily operations and specific campaigns.
The GRC should benefit from but also contribute to maintaining the long term competences and expertise at the level of Member States.
All of the components of the GRC will be implemented using a versioning approach. The first performance monitoring solution, which primarily relies on contributions from Member States, is expected to be in place at the time of declaration of Initial Services. The core facility is expected to become operational in 2017.
