Advanced Data Handling Architecture (ADHA)

To contribute towards the European Space Agency’s (ESA) objectives of reducing spacecraft development time, achieving cost efficiency, and promoting faster adoption of innovative technologies, the On-Board Computer and Data Handling Systems section (TEC-EDD) is currently engaged in several activities with European industry partners.

The aim is to develop across ESA member states an Advanced Data Handling Architecture (ADHA) based on standardized, interchangeable, and interoperable electronics modules equipped with the latest generation of microelectronics components. This architecture is intended for utilization in Low Earth Orbit (LEO) satellites, particularly for Earth Observation missions.

Olivier Mourra

H/ On-Board Computers&Data Handling

Kostas Marinis

On Board Computers and Data Handling Engineer

Felix Siegle

Payload Data Handling Engineer

David Steenari

On-Board Payload Data Processing Engineer

ADHA is an initiative of FutureEO (Block 1, Foundations and Concepts) and DPTD (Preparation Element), supported by TDE, GSTP, InCube offices. 

The aim of this website is to provide some information about ADHA and access of the last up-date of the ADHA documents.


ADHA regroups several industries involved at different levels with different responsibilities.


  • ADHA Large-Scale Integrator (LSI) team:
    This group is currently composed of ADS (DE), ADS (FR), TAS (I), TAS(FR), OHB (DE)
  • ADHA modules and unit manufacturers/integrator team:
    This group is currently composed of ADS (FR), TAS (BE), TAS (UK), TAS (I), Beyond Gravity (SE), Beyond Gravity (FI), Beyond Gravity (AU), DSI (DE), OHB (DE), ISD (GR), FrontGrade Gaisler (SE)
  • Industry working on specific key technologies or building blocks that will be used in ADHA: This group is currently composed of Axon Cable (FR), Klepsydra (CH), ISD (GR), Alter (ES), FrontGrade Gaisler (SE), Alter (FR), Performance Interconnect (FR)


A paper summarising the Status, Current Activities and Industrial Road Map of ADHA can be found at the link below. 



ADHA project documentation

The ADHA document structure has been organized using a top-down approach. 

  • At the upper level, L0 documents focus on ADHA system requirements. 
  • Moving down to the next level, L1 documents address requirements that are applicable to ADHA units. 
  • The subsequent level, L2 documents, are dedicated to requirements and design features of the various elements comprising ADHA units, such as mechanical housing, modules, backplane interfaces, backplane protocols, etc. 
  • Lastly, the L3 level pertains to unit and module Electrical Ground Support Equipment (EGSE).

To maintain an efficient and organized approach, generic documents applicable to all ADHA units and modules are provided at every level, along with specific documents that complement the generic ones for targeting specific development and applications.

Furthermore, the ADHA documentation covers technical and functional requirements, including interface requirements to ensure compatibility among ADHA products. It also encompasses Product Assurance/Quality Assurance requirements, environmental requirements, and development requirements to facilitate coordinated development of ADHA products, starting from Engineering Models up to Flight Models.

All ADHA documents can be downloaded at the link below