SCEPTER launched to develop next-generation European multifunction RF systems

Recent conflicts have demonstrated that effective defence depends on the ability to integrate capabilities across multiple domains. Situational awareness requires combining sensor data from naval, airborne, and ground-based platforms, while kinetic measures must be complemented by electronic warfare to counter evolving threats.

In response to these challenges, the SCEPTER (European multifunction System ConcEPT applied to communications, Electronic warfare and Radar) project was launched under the European Defence Fund call on Advanced Radar Technologies (Research actions on advanced passive and active sensors). 

SCEPTER brings together European defence industry leaders, research organisations and SMEs to design a future European multifunction radiofrequency (RF) system integrating radar, electronic warfare and communication functions within a shared Active Electronically Scanned Array (AESA) architecture. 

The initiative also contributes to strengthening the European Defence Technological and Industrial Base and supports the development of advanced technologies aligned with European objectives in innovation, interoperability and strategic autonomy, building on the technological foundations and lessons learned from previous European PADR projects such as CROWN, and further consolidating a coherent and fully European approach to multifunction RF system development.

According to Indra Group, SCEPTER addresses the growing need for highly integrated and adaptable RF systems capable of operating across air, ground and maritime domains. “It represents a decisive step toward more mature and integrated multifunction RF solutions. Modern operational environments require systems that are flexible, resilient and capable of managing radar, electronic warfare and communication tasks simultaneously. Through SCEPTER, we are developing the technological foundations for such systems within Europe, reinforcing both performance and technological sovereignty,” the project coordinator stated.

By combining multiple functions within a single system and shared antenna aperture, the project seeks to enhance situational awareness, reduce electromagnetic interference and improve operational effectiveness. 

The project will deliver the preliminary design of a multifunction RF sensor based on compact AESA technology, supported by advanced modelling and simulation methodologies, including digital twin approaches. Research activities will focus on Low-Observable AESA technologies, ultrawideband antenna concepts and innovative radome solutions. The consortium will also develop cognitive techniques using artificial intelligence and machine learning to enable adaptive waveform design, intelligent resource management and improved target detection and classification in complex environments.

Attention will be given to improving size, weight and power performance through highly integrated RF front-end technologies, including compact transmit/receive modules, as well as modular and scalable digital hardware architectures. The project will culminate in the design and demonstration of key subsystem building blocks, including radiating panels, RF front-end modules, digital back-end solutions and an advanced resource management component, enabling tangible validation of the proposed innovations.

The SCEPTER consortium is coordinated by Indra Group (Spain) and brings together 14 major European defence industry leaders, research and technology organisations and specialised SMEs with longstanding expertise in multifunction radar, RF component design and electronic warfare systems: BPTI (Lithuania), CAFA Tech (Estonia), CNIT (Italy), Elettronica (Italy), Fraunhofer FHR (Germany), Hensoldt (Germany), Leonardo (Italy), TNO (Netherlands), ONERA (France), SAAB (Sweden), THALES (France), FOI (Sweden), XY Sensing (Poland). 

Representing nine EU countries, the partners combine industrial capability, advanced research competence and specialised technological expertise, forming a strong cross-border ecosystem dedicated to the development of next-generation European multifunction RF systems. Many of consortium partners have collaborated for over a decade in related European initiatives and bring extensive experience from previous EDF and PADR projects, ensuring the availability of essential background knowledge and intellectual property.