Partnership project programme: Artes 4.0

Home   /  Pioneer

Pioneer

Ongoing
Connectivity

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The European Space Agency (ESA)’s Pioneer partnership project marks a modern leap in how Europe supports innovation in space-based services

It provides a framework for in-orbit demonstration of commercial and institutional satellite technologies, helping start-ups and emerging space-mission providers validate their services in orbit.

The need for validation in orbit

Innovative space-based services, whether Earth observation, high-throughput communications, orbiting data analytics or platform hosting, face a major barrier: the cost and complexity of securing an in-orbit flight demonstration. Without flight heritage, many service providers struggle to convince customers, investors or operators of their capability.

ESA recognised this gap and launched Pioneer under its Advanced Research in Telecommunications Systems (ARTES) Partnership Projects programme to lower the barrier for new space mission providers by offering a structured pathway:

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ESA helps fund and guide the first one or two missions for a provider, reducing risk.
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The provider then continues independently into commercial operation once flight heritage is established.
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Pioneer offers quick and effective in-orbit validation of technology, enabling access to market for new space-based services.

The Pioneer programme aims to provide affordable and timely access to orbit for new-space providers and services; encourage commercialisation of technologies; enable demonstration of disruptive satellite services (for example: In-Orbit Demonstration and Validation (IOD/IOV), Internet of Things (IoT), aviation and maritime messaging, multi-function constellations, space domain awareness and intelligence); and reinforce Europe’s industrial competitiveness in new-space era by supporting Small and Medium-sized Enterprises (SMEs) and rapid-cycle missions.

How to work with Pioneer

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A company (or consortium) registers as a Space Mission Provider (SMP) under Pioneer, committing to develop an infrastructure capable of delivering in-orbit demonstration services.
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ESA provides support (financial, technical, risk-sharing) for the first in-orbit demonstration(s), often a small satellite or hosted payload mission.
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After demonstration, the SMP aims to operate commercially, offering service to other clients.
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The concept is open to European and Canadian industry.
Submit to our Call for Proposals

Demonstrations

Sapion

Internet of Things (IoT) service

Open Cosmos | United Kingdom

Striving

IOV services

Sitael | Italy

IODA

Telecomms and Earth observation services

Airbus | France

SAAS

Aviation, maritime and data services

Spire Global | United Kingdom

Faraday 2G

IOV services

In space Missions | United Kingdom

xSPANCION

Telecomms and Earth observation services

AAC Clyde Space | United Kingdom

CORVUS

Space domain awareness demonstration

Spacemanic | Czechia

ESpaDA

Space domain awareness and intelligence services

Methera Global Communications Ltd | United Kingdom

Titan Forge

Mission simulation and operations facilities

Axient Systems | The Netherlands

STARS

Nanosat data relay services

Exobotics | United Kingdom

Infrastructure upgrades

A mission using the Airbus Arrow 150 platform was supported by Pioneer.

RELATED LINKS & CONTACTS

CONTACT

Clive Edwards


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 621594708

Clive.Edwards@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

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Partnership Projects

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Industrial Competitiveness

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Pioneer Partnership Projects – Call for Proposals

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Home   /  5G EMERGE

5G EMERGE

Ongoing
Space for 5G

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Supported by our Space for 5G/6G & Sustainable Connectivity programme, 5G-EMERGE – which is led by the European Broadcasting Union (EBU) – represents an effort to rethink media distribution in an era of ubiquitous connectivity.


The project aims to do so by integrating satellite and terrestrial 5G/6G infrastructures into a seamless media-delivery ecosystem, based on open standards. The upshot will be scalable, high-quality media distribution to a variety of endpoints: homes, vehicles, network edges, and even direct-to-device.

By fusing satellite distribution, edge computing, and 5G infrastructure, it tackles both the technological and economic challenges of reaching users everywhere, with high quality and resilience. As use-cases evolve from homes and vehicles to devices and interactive services, the project charts a course for how Europe – and potentially beyond – will deliver content and connectivity in the next decade. 

The success of 5G-EMERGE could catalyse broader adoption of integrated space-terrestrial networks, helping to realise the vision of seamless global connectivity.


Consortium and industrial collaboration


The 5G-EMERGE project brings together a diverse consortium of key players from across Europe, combining expertise from the space, telecommunications, and media sectors under the coordination of the European Broadcasting Union (EBU).

5G-EMERGE is a broad consortium involving dozens of companies across Europe. In Phase 1 25 organisations participated, while Phase 2 expanded to 34 companies, and across eight Member States including Switzerland, Luxembourg, Italy, Sweden, Norway, Netherlands, the United Kingdom and Finland. 


Features of 5G-EMERGE


The architecture envisaged for 5G-EMERGE includes several layers and key elements:

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A satellite backhaul layer
Satellites transmit content (popular media streams) to teleports, home gateways or edge nodes.
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Edge nodes
These may reside in 5G base stations, micro-data centres, home gateways, vehicles etc. They host caching, content delivery logic, service orchestration, and the interface to end-users.
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Service provisioning layer / orchestration
Because the system is multi-tenant and must support distributed edges and satellite links, the project investigates the interfaces, service discovery, orchestration, caching optimisation, QoS/security layers.
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Integration with standards
The work leans heavily on 3GPP standards for terrestrial 5G/6G, as well as satellite standards. Phase 2 explores New Radio-Non-Terrestrial Network (NR-NTN), direct satellite-to-device connectivity, multicast/broadcast over 5G.
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Open IP-based system
The ecosystem uses native-IP protocols to enable flexibility and interoperability.

Use cases of 5G-EMERGE

The core value proposition of 5G-EMERGE is that satellite distribution can efficiently deliver popular content (live events, on-demand) to many users simultaneously, while terrestrial edges (including 5G base stations, home gateways, localized caches) handle the “last-mile” delivery and interactive functions.

Use-cases include:

Direct-to-home (DTH)
Satellites deliver high-quality media content directly to homes, complementing or enhancing terrestrial broadband and broadcast services. By combining satellite multicast/broadcast with 5G unicast delivery, users can enjoy seamless video streaming, ultra-high-definition television, and interactive content even in areas with limited terrestrial coverage. This hybrid model also reduces strain on terrestrial backhaul networks by offloading popular content to satellite links.
Direct-to-vehicle (DTV)
Focuses on enabling connected cars, buses, trains, and other vehicles to receive content directly from satellites. Vehicles can pre-cache or stream live content such as news, entertainment, navigation updates, and critical software patches. This approach ensures connectivity on the move – especially in rural or cross-border areas where terrestrial 5G coverage is inconsistent – and supports emerging automotive services like in-car infotainment, over-the-air updates, and intelligent transport systems (ITS).
Direct-to-edge (DTE)
Satellites distribute content to 5G edge nodes, such as local data centres, base stations (gNodeBs), or micro-edge servers. These edge nodes then serve end-users through terrestrial 5G networks. This model is highly efficient for content delivery networks (CDNs), allowing popular or time-sensitive content to be pre-positioned closer to users, reducing latency and network congestion. It is particularly useful for live events, VR/AR applications, and industrial Internet of Things (IoT) scenarios that demand low-latency access to large data volumes.
Direct-to-device (D2D)
In the D2D use case – planned for Phase 2 of 5G-EMERGE – mobile devices such as smartphones, tablets, and IoT terminals will receive data directly from satellites integrated into 5G standards. This allows end-users to receive broadcast or multicast services without relying on terrestrial infrastructure. It has major implications for public safety, emergency alerts, rural connectivity, and content delivery in remote or maritime regions.
Content distribution and edge caching
One of the broader use cases across all categories is hybrid content distribution, where popular or time-critical content (for example, video-on-demand, live sports, or software updates) is delivered by satellite to edge nodes or devices, then distributed locally through 5G. This significantly enhances network efficiency and user experience, while enabling new business models for media service providers.
Network Resilience and emergency communications
Another emerging use case involves disaster recovery and emergency communication services. When terrestrial networks are congested, damaged, or unavailable (for example, during natural disasters or major public events), satellite links in the 5G-EMERGE system can maintain continuity of service, ensuring critical information and connectivity remain available.
Industrial and rural connectivity
5G-EMERGE also supports industrial IoT and smart rural applications, where hybrid connectivity ensures reliable communication for remote operations, agriculture, energy infrastructure, and environmental monitoring. The satellite component guarantees coverage and data transfer capabilities even in isolated or infrastructure-poor areas.

RELATED LINKS & CONTACS

CONTACT

Antonio Franchi


ESA’s European Centre for Space Applications and Telecommunications (ECSAT)

Fermi Avenue

Harwell, Didcot, OX11 0FD, United Kingdom

+44 (0)7775 426521

Antonio.Franchi@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

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Space for 5G

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Home   /  The Security And cryptoGrAphic (SAGA) mission

The Security And cryptoGrAphic (SAGA) mission

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Quantum

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The Security And cryptoGrAphic (SAGA) mission is aimed at enabling sovereign, spacebased quantum key distribution (QKD) services for Europe’s governments and critical infrastructure.

Developed in close partnership with the European Commission via the broader European Quantum Communication Infrastructure (EuroQCI) initiative, SAGA is set to form the space segment of Europe’s quantum communication backbone.

In an era of growing digital and cyber threats, Europe’s reliance on secure communication has come under increased scrutiny. SAGA addresses this need by leveraging quantum mechanics to enable cryptographic keys, to shut down any attempt at observation or tampering of sensitive government and institutional data. By enabling secure transmission of encryption keys over long distances, SAGA will contribute to the resilience of Europe’s digital infrastructure.


The importance of SAGA

Digital sovereignty and cybersecurity
SAGA will contribute to European governments and institutions, allowing for access to secure, sovereign communication links, independent of a non-European-controlled infrastructure.
Global reach of QKD
Groundbased fibre networks suffer exponential loss over long distances; by positioning quantum payloads in space, SAGA seeks to overcome terrestrial limitations and enable secure key distribution across continents.
Industrial leadership
By being at the forefront of spacebased quantum communications, SAGA will help Europe maintain and enhance its industrial competitiveness in quantum and optical technologies.


SAGA’s architecture



With a strong industrial ecosystem led by Thales Alenia Space and a clearly defined roadmap, SAGA sits at the intersection of technology, security and European strategic autonomy. As the mission progresses through its design and development phases, it will also serve as a foundation for future quantum networks, potentially enabling a global quantum internet anchored in European space capabilities.


To establish a hybrid cryptographic framework, merging quantum-based key distribution with high-grade classical security, SAGA will feature the following components in its architecture.

Components

Quantum Key Distribution (QKD) payload
The heart of the cryptographic system, this optical payload generates and transmits quantum encryption keys using single photons, ensuring key exchange is inherently secure against eavesdropping due to the laws of quantum mechanics.
Secure Key Management System (KMS)
Manages generation, storage, and distribution of cryptographic keys between the satellite, ground stations, and terrestrial networks, enforcing strict authentication and access control.
Classical Encryption Subsystems
Once quantum keys are exchanged, conventional symmetric encryption is used for data transmission, combining quantum and classical security methods for end-to-end protection.
Trusted Node architecture
Each optical ground station acts as a trusted node, enabling secure key relay between space and terrestrial networks while maintaining cryptographic integrity.
Authentication and integrity verification
Implemented through digital signatures and message authentication codes (MACs) to protect command and telemetry channels.
Tamper-resistant hardware and secure processing units
Embedded in both the satellite and ground infrastructure to prevent unauthorised access, physical tampering, or side-channel attacks.


The phases of SAGA


SAGA’s initial phase has taken place, where it focused on system design and architecture definition, where mission objectives, requirements, and interface control documents are established, outlining how the space and ground segments will interact securely. 


Currently SAGA is under the development and integration phase, where the quantum key distribution (QKD) payload, secure communication modules, and key management systems, as well as the construction and validation of optical ground stations will be created. The verification and validation phase tests end-to-end performance, ensuring the quantum key exchange, encryption mechanisms, and authentication systems meet strict security and operational standards under real-world conditions.


Finally, the deployment and operational phase transitions SAGA into service, where the satellite will perform routine secure key distribution to European ground stations, in support of EuroQCI. The phased approach will ensure that SAGA evolves from a conceptual quantum communication demonstrator to a fully operational system, reinforcing Europe’s strategic autonomy and data security in space-based communications.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects

Overview page

Optical and Quantum Communications – ScyLight

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Home   /  Triton-X

Triton-X

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Connectivity

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The European Space Agency (ESA) and industry partner LuxSpace, a subsidiary of OHB Group, are collaborating on a new generation of microsatellite platforms called Triton-X

Triton-x project key visual

Tailored for low Earth orbit (LEO) missions and designed with a New Space ethos, Triton-X is a modular, multi-mission product line aimed at commercial and institutional users who require fast, cost-effective access to orbit.


As the satellite market evolves, the demand for smaller, quicker-to-deploy spacecraft has grown strongly. Traditional platforms built for bespoke missions are costly and slow to manufacture. In answer to the problem, ESA instituted Triton-X under its Advanced Research in Telecommunications Systems (ARTES) Partnership Project programme to deliver a generic microsatellite platform optimised for fast time-to-market, lower recurring cost, and flexibility across applications, including telecommunications, Earth observation, technology demonstrations and situational awareness.


Triton-X provides European industry with a competitive product line that supports rideshare launches, accommodates multiple payload types, and opens up access to orbit for new players and constellations.


Platform variants and key specifications


Triton-X is designed as a product family with three size classes to accommodate different mission scales.

VariantLaunch MassPayload MassPayload Power
Light45 kg12.5 kg15 W
Medium80 kg30 kg40 W
Heavy200 kg90 kg110 W


These variants enable the platform to serve missions ranging from simple demonstration or IoT satellites to more capable telecommunications or Earth observation microsats.


Industrial Consortium and ESA’s role

LuxSpace serves as the prime contractor for Triton-X, supported by an industrial consortium of partner companies across Europe of which includes APCO Technologies in Switzerland, ARCSEC in Belgium, ASP in Germany, Edisoft in Portugal, EmTroniX in Luxembourg, and ESC in Czechia.

ESA’s involvement is through a Partnership Project under our ARTES programme, helping fund the development and qualification of the platform and de-risking the industrial investment. In May 2021, ESA and LuxSpace signed the contract establishing Triton-X Heavy’s development and qualification phase. 


Technology and operational Features

Triton-X emphasises rapid manufacturing, modular design, and standardised interfaces.

Use of off-the-shelf building blocks and commercial components to reduce cost and time.
Compatibility with rideshare and small-launcher missions, enabling cost-effective deployment via shared launch vehicles.
Applicability to a wide array of missions; telecommunications, Earth observation, situational awareness, technology demonstration, optical payloads.

The Heavy variant’s payload capacity (90 kg) and power (110 W) allow for significant missions within the microsatellite class. The platform is also positioned to support constellations, where recurring cost, production efficiency and standardisation become key differentiators.

The strategic and economic impacts of Triton-X


Triton-X carries strategic importance for Europe’s space industry

It provides industrial competitiveness, enabling European companies to compete in the global small-sat market which is increasingly price-sensitive and fast-moving.
It enhances access to space for both institutional and commercial users, particularly those without the budget for large satellites.
It contributes to sovereignty and supply-chain resilience; having a European microsatellite platform means reduced reliance on non-European providers for smallsat missions.
It supports market growth by lowering entry barriers and enabling recurring production, it helps stimulate new services, constellations and business models.

Outlook and opportunities

Looking ahead, major focus areas for Triton-X include: successfully launching the first flight model to validate the platform’s performance in orbit; converting the platform into commercial orders and recurring production to validate the business model and deliver economies of scale; expanding payload types and mission classes (for example: constellations, direct-to-device communications, optical communications) to leverage the modular architecture; tightening the integration with small launcher services and leveraging rideshare environments to reduce deployment costs further and fostering a broader European supply-chain ecosystem around smallsat platforms, manufacturing, ground-segment support and operations.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects programme

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Home   /  Sunrise

Sunrise

Ongoing
Space for 5G

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The Sunrise Partnership Project is focused on developing next-generation satellite communications and associated technologies

Sunrise project key visual

The project is structured as a public-private partnership, supporting European industry, promoting competitiveness, and enabling novel capabilities in Earth orbit for telecommunications, connectivity, servicing and sustainability.

The satellite communications industry is undergoing rapid transformation: the rise of low-Earth orbit (LEO) constellations, convergence of satellite and terrestrial 5G/6G networks, increasing demand for direct-to-device services, as well as heightened focus on sustainability, including debris removal and end-of-life servicing. ESA’s Sunrise project responds to these trends by helping European industry develop, mature and validate enabling technologies across payloads, user terminals, active antennas, beam-hopping, servicing, active debris removal in orbit, and multi-orbit systems.

The project also addresses Europe’s strategic imperative of maintaining sovereign access to space-based telecommunications infrastructure and enabling European companies to remain competitive in a global market. Moving from traditional GEO telecommunications models to LEO / medium Earth orbit (MEO) hybrids, beam-hopping, flexible user terminals and servicing, Sunrise is part of ESA’s Partnership Project programme line.

The project exemplifies how public-private collaboration can drive breakthrough technologies, industrial innovation and strategic autonomy.


Sunrise’s phases


Sunrise is organised in phases, each addressing different maturity levels and industrialisation steps

Phase 1 and 2 focuses on identifying key technologies and validating them (ground prototypes, in-orbit demonstrators). For example, early work with OneWeb, before its merger with Eutelsat Group, addressed digital payloads, user terminals and 5G convergence.
Phase 3, which was launched formally in May 2024, emphasises industrialisation, production readiness, small-sat/constellation deployment, mass-manufacturing and sustainability. The contract signed on 15 May 2024 at ESA HQ in Paris marks this milestone.
The project is supported by several ESA Member States, including the UK, Austria, Italy and Romania, and relies on European industry clusters – for example, SMEs and supply-chain participants across Europe – and the UK Space Agency.


Major technological focus areas

Sunrise covers several interrelated technology domains

Beam-hopping and digital payloads
Demonstrating flexible beam steering and dynamic resource allocation to improve satellite system efficiency.
Integration of 5G/6G and satellite connectivity
Supporting hybrid terrestrial-satellite networks, enabling 5G non-terrestrial networks (NTN) readiness, user-terminal development, and direct-to-device possibilities.
End-of-life servicing and active debris removal (ADR)
Under Sunrise, ESA and industry partners such as Astroscale UK are developing commercial servicing solutions for satellite end-of-life.
Mass-manufacturing and industrial scalability
Phase 3 emphasises industrial production readiness of satellite platforms, modular subsystems, supply-chain readiness and economics of scale for constellations.
Multi-Orbit solutions and new services
Beyond single-orbit telecommunications, Sunrise supports technologies for LEO, MEO and hybrid systems (connectivity, remote-sensing payloads, AIS/ADS-B surveillance) enabled through the partnership.


Impacts and benefits 

The Sunrise project carries significant strategic benefits for Europe

ndustrial competitiveness
By derisking cutting-edge technologies and co-funding demonstrators, it helps European operators and suppliers to remain competitive in global satellite markets (particularly LEO/MEO constellations and 5G/6G integration).
Sovereignty and autonomy
Supporting European operators and industry ensures Europe retains independent access to satellite communication infrastructure and associated technologies.
Innovation ecosystem
Enables collaboration across large operators (Eutelsat Group), service providers, SMEs and research organisations. This stimulates supply-chain growth, technology spin-offs and new business models.
Sustainability & long-term space usage
The inclusion of ADR and servicing activities under Sunrise addresses orbital debris and sustainability concerns, aligning with global space-sustainability goals.
New business models
Moves away from classical GEO telecommunications and into hybrid, multi-orbit, flexible and service-oriented architectures, opening opportunities in direct-to-device, mobility, Internet of Things (IoT) and other emerging markets.


Sunrise Next Gen

Sunrise Next Gen, which supports ESA’s goals by advancing mobile convergence between terrestrial and non-terrestrial networks, is focused on several key objectives

Enabling a seamless transition towards unified terrestrial/non-terrestrial (TN/NTN) architectures, anticipating future 5G/6G standards.
Improving capacity, flexibility, and spectral efficiency through advanced beamforming and dynamic resource allocation.
Integrate Positioning, Navigation, and Timing (PNT) capabilities for resilience against interference and spoofing.
De-risking and validating space, ground, and user segment innovations to maintain European competitiveness.
Incorporating industrialisation and scalability from the outset to enable mass production of satellites, gateways, and user terminals.
Promote European sourcing of critical components to reduce dependence on non-European suppliers.


Evolution of Sunrise 

Phase 1 (2019 – 2020)
Preparatory studies identifying critical technologies.
Phase 2 (2021 – 2026)
Technology maturation and in-orbit validation via the JoeySat demonstration satellite. JoeySat successfully tested dynamic beam-hopping and flexible payloads, surpassing its planned mission lifetime.
Phase 3 (2024 – 2028)
Supports the ongoing development of technologies for NextGen batches 1 and 2, focusing on new space hardware and user terminals.
Phase 4 (2026 – 2029)
Focuses on the development and qualification of innovative payloads, user terminals, antennas, and ground segment technologies for Batch 3. It will also support responsible space activities such as active debris removal and end-of-life management.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects programme

Overview page

Home   /  SmallGEO

SmallGEO

Heritage
Connectivity

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SmallGEO marked a pivotal step in Europe’s efforts to diversify and strengthen its telecommunications satellite industry

Developed under ESA’s Advanced Research in Telecommunications Systems (ARTES) programme, SmallGEO was designed to fill a strategic gap between large, high-capacity geostationary satellites and smaller, more flexible systems. Its goal: to deliver a lightweight, modular and cost-effective platform for commercial and institutional geostationary Earth orbit (GEO) missions.

By enabling European industry to build smaller, efficient, and competitive GEO satellites, the SmallGEO platform has become a foundation for several follow-on projects, including Electra and HummingSat, that continue to evolve Europe’s presence in the global telecommunications market.

In the early 2000s, Europe’s satellite industry was dominated by large GEO spacecraft exceeding 5 to 6 tonnes in launch mass. These satellites were powerful but costly to build and launch, restricting access for smaller operators and niche missions. ESA and its partners recognised the need for a mid-class geostationary platform that would reduce manufacturing and launch costs; offer flexible configurations for different payloads, strengthen Europe’s independent access to commercial satellite markets and support the technological competitiveness of medium-sized companies.

In response, SmallGEO was initiated under ESA’s legacy ARTES 11 framework, with the led by OHB System AG (Germany), with significant contributions from OHB Sweden, Tesat Spacecom, Airbus Defence and Space, and Thales Alenia Space, within a consortium of European suppliers.

SmallGEO’s design

The SmallGEO platform is a modular satellite bus designed for geostationary missions in the mass range of 2 to 3.5 tonnes, roughly half the weight of conventional GEO satellites. It offers a flexible payload capacity of 300–600 kg, and power generation of up to 6 kW, making it sufficient for a broad range of telecommunications payloads, including broadcast, broadband, and secure communications.

Some of its game-changing features include

Compact structure
A modular design allows different payloads and mission configurations without redesigning the entire bus.
Flexible propulsion
Options for chemical, hybrid, or all-electric propulsion for orbit transfer and station keeping.
Cost efficiency
The reduced size and mass allow launches on mid-class rockets or dual-launch configurations, cutting costs.
European autonomy
All major components are built by European suppliers, reinforcing industrial independence.


The modular design of the SmallGEO bus makes it an attractive choice for both commercial and institutional customers seeking a tailored platform without the expense of custom satellite design.


SmallGEO’s legacy

Several satellites have been developed using the SmallGEO platform or its derivative, validating its performance and flexibility in orbit.


Hispasat 36W-1 (H36W-1)

Operated by Hispasat (Spain), Hispasat 36W-1 was the first satellite built using the SmallGEO platform and the first large-scale telecommunications mission led by OHB SE. A communications payload was developed by Tesat Spacecom with 20 Ku-band transponders and a novel reconfigurable payload from TESAT (REDSAT), which enables flexible channel allocation. The successful operation of H36W-1 validated SmallGEO as a reliable platform and marked Europe’s entry into a new GEO class.


Electra Platform 

Building on SmallGEO’s success, ESA and OHB developed Electra, a variant using fully electric propulsion for both orbit-raising and station keeping. The Electra platform offers similar payload performance but dramatically reduces launch mass and propellant needs, cutting overall costs. SES in Luxembourg is a major commercial partner for the first Electra satellite.


HummingSat

The modular SmallGEO architecture is also serving as a reference for future ESA and commercial missions including HummingSat, an even smaller geostationary class designed by SWISSto12.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects programme

Overview page

Home   /  Satellite Automatic Identification System (SAT-AIS...

Satellite Automatic Identification System (SAT-AIS)

Heritage
Connectivity

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The world’s oceans are the lifelines of global trade and transport, yet they remain some of the least monitored and most challenging environments on Earth

To enhance maritime safety, security, and environmental protection, the Automatic Identification System (AIS) was originally developed as a ship-to-ship and ship-to-shore communication tool, enabling vessels to broadcast their identity, position, speed, and course. However, the system’s ground-based reach was limited to about 40 to 60 kilometres from the coast.

To overcome these coverage gaps, the European Space Agency (ESA) began developing the Satellite Automatic Identification System (SAT-AIS), which uses satellites to receive AIS signals from ships across the globe, including remote oceans and polar regions. Through several technology demonstration missions and partnerships, ESA has positioned Europe as a leader in space-based maritime surveillance and data services.


The SAT-AIS ambition

The Automatic Identification System (AIS) was mandated by the International Maritime Organisation (IMO) for vessels above 300 gross tonnage and passenger ships, primarily for collision avoidance and traffic management. Each ship broadcasts short VHF radio messages containing its position, speed, heading, and unique Maritime Mobile Service Identity (MMSI) code.

While highly effective near coasts and busy sea lanes, terrestrial AIS are unable to track ships once they sail beyond range of coastal radio stations. To solve this, the concept of SAT-AIS emerged in the mid-2000s: by placing AIS receivers onboard satellites, ships’ transmissions can be picked up from orbit and relayed to ground stations.

ESA and its partners recognised that space-based AIS would be critical for maritime domain awareness, search and rescue, environmental monitoring, and combating illegal activities such as unreported fishing or smuggling.


ESA’s work in AIS from orbit, and the launch of SAT-AIS

ESA’s first steps into SAT-AIS began in 2008, when the Agency, in cooperation with the European Maritime Safety Agency (EMSA) and the European Defence Agency (EDA), initiated studies to assess the feasibility of detecting AIS messages from orbit. The objectives were to demonstrate reliable AIS signal detection from low Earth orbit (LEO); develop European technological autonomy in maritime surveillance from space; provide near-real-time ship tracking data to European authorities and commercial users and establish partnerships with European industry to commercialise SAT-AIS services.


ESA’s role was to develop, fund, and coordinate technology demonstrations, while EMSA acted as the operational customer representing European maritime authorities.


In 2010, ESA and the European Maritime Safety Agency (EMSA) formally launched the SAT-AIS project, under the umbrella of the European Commission. The initiative’s goals were to develop a European SAT-AIS demonstration satellite system; establish industrial partnerships for future operational constellations and to integrate SAT-AIS with Europe’s broader maritime security architecture, including Copernicus, Galileo, and the Global Monitoring for Environment and Security (GMES) programme.


ESA funded the development of prototype AIS payloads and supported the launch of several experimental missions, including:

The SAT-AIS Microsat programme, where ESA selected two European consortia for the SAT-AIS Phase B2 study: OHB SE, working with LuxSpace and Kongsberg Seatex, as well as Thales Alenia Space Italia, who led a consortium focused on high-capacity AIS payloads.
The result was the development of SAT-AIS microsatellite designs capable of detecting and processing tens of thousands of ship signals per orbit. Our Advanced Research in Telecommunications Systems (ARTES) programme provided the technological and financial framework to mature these capabilities.
ESA’s OPS-SAT and Φ-Sat platforms have since been used to test new onboard data-processing techniques for SAT-AIS, including artificial intelligence-based signal filtering, enabling faster and more accurate detection of ships in dense maritime zones. By 2024, ESA’s SAT-AIS activities were feeding data into EMSA’s European Maritime Safety Network, supporting operations such as illegal fishing detection, Arctic traffic monitoring, and oil spill response.

SAT-AIS’ integration into European space systems

ESA’s SAT-AIS programme is designed to integrate with other European space systems, creating a multi-layered maritime monitoring capability:

Copernicus Sentinel satellites provide optical and radar imagery to identify oil spills, ice flows, and vessels.
Galileo, Europe’s navigation system, supplies precise positioning data to ships.
SAT-AIS provides identification and tracking data, confirming vessel identities detected by radar or optical sensors.

This integration enables “data fusion” – combining imagery, location, and AIS information – to generate a comprehensive picture of maritime activity. Such capabilities are essential for maritime border control and security, environmental monitoring (oil spills, illegal discharges), search and rescue operations and monitoring compliance with international maritime laws.

Commercialisation and industrial impact

ESA’s support for SAT-AIS has catalysed the emergence of a vibrant European commercial sector in maritime data services.

Companies such as LuxSpace, ExactEarth Europe, Kongsberg Satellite Services (KSAT), and GMV have all benefited from ESA-funded technology developments. LuxSpace, for example, has evolved from a Small and Medium Enterprise (SME) into a globally recognised provider of AIS data services, operating microsatellites and selling maritime intelligence products to both government and private clients.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

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Home   /  QKDSat

QKDSat

Ongoing
Quantum

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In today’s rapidly evolving digital world, the security of communications has become a paramount concern


Traditional encryption schemes face a growing threat from quantum computing, which could render many current cryptographic methods ineffective. In response to this existential challenge, the European Space Agency (ESA) is championing an ambitious project: QKDSat. QKDSat aims to establish a space-based quantum key distribution (QKD) infrastructure that can deliver encryption keys with security guaranteed by the laws of quantum physics.

QKD leverages the properties of individual photons to distribute cryptographic keys between distant parties in such a way that any eavesdropping attempt inevitably disturbs the quantum state and is thereby detected. This capability holds critical importance for securing data across governmental, financial, infrastructure and commercial sectors.

Ground‐based QKD networks are inherently constrained by distance and signal loss, whether in optical fibres or free space. Therefore, satellites offer the only practical route to global-reach QKD, enabling secure key delivery even across continents. The QKDSat initiative is ESA’s contribution to Europe’s digital sovereignty: ensuring access to ultra-secure communications free from external dependency.


QKDSat: an ESA Partnership Project

QKDSat belongs to ESA’s Advanced Research in Telecommunications Systems programme as a Partnership Project with European industry. The lead industrial partner is Honeywell UK, which, in consortium with Redwire Space in Belgium, QTLabs in Austria, as well as companies across Czechia, Switzerland, Canada and the UK, will develop the satellite, payload and ground-segment elements.

The formal contract signature took place on 16 September 2025, marking the transition from concept to delivery phase. This includes not only the satellite platform and payload, but operational demonstrations of QKD key delivery services.


How QKDSat will work 

At its heart, QKDSat uses photon-based quantum links between a satellite and ground stations. The satellite serves as a transmitter of quantum states – for example through single photons, weak coherent pulses – to ground terminals.

The ground terminals decode the states, performing quantum-key extraction, error-correction, and privacy‐amplification to produce a shared secret key. Because any interception would alter the quantum state, the system inherently detects eavesdropping.


Key technical features of QKDSat include:

A satellite-to-ground optical free-space quantum link, enabling secure key delivery over large distances with lower loss than terrestrial fibre.
High-quality random number generation for quantum key material, and integration with classical key-management systems for downstream encryption use.
A scalable service architecture: QKDSat is envisioned not just as a demonstration, but as a pre-commercial system enabling multiple satellites and users (including governmental and telecommunications operators) to access quantum-safe key services.

The impacts of QKDSat

QKDSat’s operational service aims to protect critical infrastructures such as power plants, banking systems, data centres, telecommunications networks and government communications. In effect, QKDSat intends to deliver encryption keys that remain secure even after quantum computers become capable of breaking traditional cryptographic algorithms. 

Beyond the immediate technical gains, the project carries strategic value for Europe by contributing to Europe’s future quantum-communication architecture, stimulating European industry’s competitiveness in the global quantum communications sector and advancing sovereign access to ultra-secure communications beyond reliance on non-European suppliers.

The success of QKDSat is expected to accelerate broader adoption of quantum-secure technologies, contribute to the standardisation of QKD services, and set the foundation for commercial markets in quantum key distribution. The knowledge gained will feed into follow-on ESA Partnership Projects such as EAGLE-1 and the Secure And cryptoGrAphic mission (SAGA), which aim to provide sovereign quantum communications infrastructure for European civil and governmental users.

RELATED LINKS & CONTACS

CONTACT

Michael Witting

ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Useful documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects programme

Overview page

Home   /  PACIS 3

PACIS 3

Heritage
Connectivity

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PACIS 3 is a strategic satellite communications project by the European Space Agency (ESA), carried out as an ESA Partnership Project under our Advanced Research in Telecommunications Systems (ARTES) programme, and in cooperation with Spain’s Hisdesat and the Spanish Centre for the Development of Industrial Technology (CDTI). 


PACIS 3 develops, qualifies and provides in-orbit validation for extremely advanced active-antenna technologies for secure satellite communications. Some of its key goals were:

Some of its key goals were

To develop reconfigurable active antennas operating in X-band for transmit and receive functions, featuring beam-hopping, geolocation, and rapid reconfiguration of coverage patterns.
To develop a deployable pallet of six individually steerable Ka-band antennas for high-capacity, flexible coverage over large areas.
To demonstrate in-orbit innovative pooling and sharing services for government/defence users, aligned to the European GOVSATCOM framework, to reduce costs and enhance flexibility.

PACIS 3 supports Europe’s aim of sovereign and resilient secure communications, reducing dependence on non-European providers, improving flexibility and affordability of government satellite services, and maintaining industrial leadership in high-tech satellite payloads.

PACIS 3-enabled payloads – which are currently on board the SpainSat New Generation (NG) programme satellites, SpainSat NG I and II – will provide secure communications services for government, defence, and allied users, with coverage spanning Europe, the Americas, Africa, the Middle East, and Southeast Asia, up to Singapore. 


Industrial partners

Industrial leadership is provided by Airbus Defence and Space in Spain as the prime for the PACIS 3 payload, working with a Spanish consortium, including SENER, Indra, GMV, Tecnobit, Arquimea, and Iberespacio. The satellite operator is Hisdesat, under the SpainSat New Generation (SpainSat NG) programme: two new-generation satellites based on the Eurostar Neo platform. PACIS 3 payloads are integrated into SpainSat NG I and II.

ESA’s Partnership Project model enables sharing of risk between the agency and industry and supports end-to-end system development up to in-orbit validation. 


Key technologies from PACIS 3

X-band Direct Radiating Arrays (DRA) to transmit and receive, with fully reconfigurable software-defined beamforming and beam-hopping capabilities, enabling simultaneous beam configurations in orbit.
Gallium Nitride (GaN) high-power amplifiers in the X-band aperture for efficient radio frequency (RF) power performance under demanding thermal conditions.
Ka-band pallet with six steerable reflector assemblies, each capable of pointing independently, offering dynamic coverage flexibility at higher frequency for throughput-intensive services.
Advanced thermal management systems including Loop Heat Pipes (LHPs) and Collecting Heat Pipe Assemblies (CHPAs) to dissipate the high heat loads associated with active antenna transmitters on board.


PACIS 3 milestones 

October 2020
he Preliminary Design Review (PDR) of the SpainSat NG programme (which incorporates PACIS 3) was passed.
2021
The Critical Design Review (CDR) for PACIS 3 was achieved in 2021.
Throughout 2023 and 2024
Manufacturing of the Ka-band pallet and X-band DRAs progressed with delivery of flight-hardware components to Airbus for satellite integration in Toulouse and Madrid.
October 2024
The antennas underwent rigorous thermal vacuum, mechanical vibration, acoustic and shock testing as part of the satellite’s environmental test campaign.
April 2024
Major antenna elements such as the DRA TX and power-supply electronics were integrated onto the SpainSat NG I satellite.
January 2025
The launch of SpainSat NG I, carrying the PACIS 3 payload, took place on 29 January 2025 aboard a SpaceX Falcon 9 from Cape Canaveral, Florida.
August 2025
The SpainSat NG I telecommunications payload was successfully activated in orbit, showcasing PACIS 3 innovations in August 2025.
October 2025
SpainSat NG II launched on 24 October 2025 on board a SpaceX Falcon 9 from Cape Canaveral, Florida.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects programme

Overview page

Home   /  Space Inspire Novacom II

Space Inspire Novacom II

Ongoing
Connectivity

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Space Inspire Novacom II, marks a major evolution in the design of geostationary (GEO) communications satellites.

Novacom II is a public-private partnership between ESA and the satellite manufacturer Thales Alenia Space, aimed at creating a new generation of fully software-defined, in-orbit reconfigurable GEO satellites for video broadcasting and broadband connectivity. 

In essence, where previous GEO satellites were built for fixed missions, with set coverage zones, beam patterns and frequency plans locked in before launch, Novacom II is designed to adapt dynamically after launch, allowing operators to reallocate coverage, adjust bandwidth, re-shape beams and respond to changing market or technical demands.


The need for reconfigurable satellites in GEO

The satellite communications market is undergoing profound shifts: increasing demand for broadband, mobility on land, air and sea, direct-to-device connectivity, digital video services and agile capacity redeployment. At the same time, operators face pressure for cost-efficiency, time-to-market and flexibility.

Fixed-mission GEO satellites are becoming increasingly less suited to dynamic markets. Novacom II addresses this gap by enabling a standardised, flexible GEO platform that can evolve. Space Inspire Novacom II will make it possible to adapt almost instantly to customer demands. 

From the industrial perspective, Novacom II helps European industry develop a next-generation product line for the commercial GEO market, supporting supply chains, innovation and export competitiveness. Because such risk-heavy development might not occur under purely commercial conditions, ESA’s Partnership Project project under the Advanced Research in Telecommunications Systems (ARTES) model shares development risk and helps bridge the gap between R&D and market-ready hardware. 


Key features of Space Inspire Novacom II

Software-defined payload that enables in-orbit reconfiguration of coverage footprints, beam shapes, frequency plans and bandwidth allocation.
Standardised GEO satellite platform to reduce cost and improve manufacturability and market scalability.
Support for both traditional video-broadcast services and broadband/mobility services, providing operators with flexibility across markets.
In-orbit reconfigurability means the same satellite can adapt its mission over its lifetime. For example, shifting from one region to another, or changing bandwidth allocation dynamically.


Benefits to industry, operators and users


For Europe’s industry

Novacom II plays a major role in ensuring Europe retains independent capability in advanced GEO telecom satellite production, rather than relying solely on non-European suppliers. It enhances European industrial competitiveness, exports and high-tech supply chains.

For operators

Operators gain significant flexibility and cost-effectiveness; rather than locking into one mission profile for over 15 years, they can dynamically optimise coverage, shift capacity to regions of demand, and respond to market changes to increase revenue potential and resilience.


For users and services

End users (particularly in broadband, mobility and video domains) benefit from satellites that can be tailored, repurposed, and managed similarly to network assets on the ground. 

Financial returns

Partnership Projects such as Novacom II are expected to generate exceptional return on investment for Member States and industry, re-enforcing the value of public-private co-funding in catalysing technological leaps.


The evolution and enhancement of Novacom II 

As of 2025, it has been announced that Novacom II will begin its next phase to include new technologies that support the integration of GEO satellites within multi-orbit networks. The evolution will improve resilience, flexibility, and cost-efficiency.

Cost reduction
Achieved through innovative building blocks, shared procurement, and industrial process improvements.
Multi-orbit integration
Adapting GEO satellites to operate alongside low Earth orbit and medium Earth orbit systems and developing European versions of key components.
Resilient capabilities
Enhancing dual-use (commercial/government) functionalities and secure communications.
Standardisation and rationalisation
Establishing common product architectures and digital tools to shorten production cycles.


This enhancement will also include development of Ka-band payloads for commercial and defence use, software tools for rapid configuration, and expansion of building blocks to enable diverse mission profiles.

RELATED LINKS & CONTACS

CONTACT

Michael Witting


ESA’s European Space Research and Technology Centre (ESTEC)

Keplerlaan 1

2201 AZ Noordwijk, The Netherlands

+31 625158619

Michael.Witting@esa.int

Documents

Overview page

Advanced Research in Telecommunications Systems (ARTES)

Overview page

Partnership Projects programme

Overview page