At Nexvision, we are convinced that the power of a space system lies not only in its sensor, but also in the onboard intelligence that accompanies it. It is with this in mind that, alongside Steel Electronique, we have won a strategic contract with CNES to develop the SPIDER FEE-PDHU project, a new-generation onboard computer for low earth orbit (LEO) satellites.
An ambitious project for Europe’s New Space
The SPIDER FEE-PDHU project is part of the New Space dynamic, which requires space architectures to be rethought around three key principles: agility, compactness and local intelligence. In this context, our aim is to design a compact, modular image acquisition and processing unit, integrating two critical functions:
- FEE (Front End Electronic): acquisition of multispectral images from various CMOS sensors.
- PDHU (Payload Data Handling Unit): on-board data processing, compression, encryption, storage and transmission.
By combining these two functions in a single on-board computer, SPIDER FEE-PDHU aims to provide a complete, lightweight, high-performance solution that is suitable for all applications.
A project at the heart of the European SPIDER initiative
SPIDER FEE-PDHU is not an isolated project. It is an essential technological component of the SPIDER programme (Space-based Persistent ISR for Defence and Europe Reinforcement), funded by the European Defence Fund (EDF). The aim of this programme is to explore a new generation of Earth observation systems, specifically designed to meet the defence needs of the Member States of the European Union.
SPIDER’s ambition is to deploy a constellation of reactive and affordable microsatellites capable of providing persistent monitoring, with near real-time revisit and processing capabilities. SPIDER FEE-PDHU will play a central role in this architecture, providing the local intelligence needed to prioritise data and reduce the volumes transmitted to the ground.
Cutting-edge on-board technologies
The development of SPIDER FEE-PDHU will be based on a combination of advanced technologies:
- FPGA/CPU/NPU architecture for on-board processing of high-resolution imaging data.
- Enhanced tolerance to radiation, essential in the space environment.
- Modular interfaces to accommodate different types of optical sensors.
- On-board software functions: CCSDS compression, AES256 encryption, on-board AI processing, CCSDS formatting, etc.
The platform is also designed to be open and scalable, enabling integrators and mission operators to adapt it easily to their specific needs.
A French industrial partnership to promote technological sovereignty
The SPIDER FEE-PDHU project is the result of close collaboration between Nexvision and Steel Electronique, two complementary French companies:
- Nexvision will contribute its expertise in the design of embedded vision systems and real-time image processing.
- Steel Electronique will provide the hardened electronic design and ensure that the system is compatible with the constraints of the space industry.
This partnership is fully in line with Europe’s desire to strengthen its strategic autonomy in the space sector and to support the emergence of sovereign solutions for dual-use applications (civil and military).
And now what?
The contract signed with CNES marks the start of an intensive technological development phase, during which the Nexvision and Steel Electronique teams will work together to bring out a functional SPIDER FEE-PDHU demonstrator. This milestone is a first step towards integration on board a satellite in low earth orbit, as part of the SPIDER programme.
We are proud to contribute to this European dynamic and look forward to sharing the progress of this project with you over the coming months.
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