Radiative Transfer for Earth Observation
Radiative Transfer Modelling and Syntethic Scene Generation
Essential Climate Variables retrieval from satellite data
Rayference is an innovative SME specialising in Earth Observation. Our focus lies in offering extensive technical and scientific expertise in both 1D and 3D radiative transfer modelling. Our flagship products, CISAR – an advanced inversion algorithm – and Eradiate – a cutting-edge open-source 3D Radiative Transfer Model – represent our commitment to excellence in this field. Find out more about our portfolio and our projects!
Our mission
We believe in the societal importance of understanding the Earth’s climate. This is why we work passionately to provide high quality service on radiative transfer theory applied to the field of environment and climate monitoring as well as supporting green energy, such as solar energy production.
Our team
We are a small team of young physicists and engineers passionate about scientific challenges and ethical principles, developing innovative solutions based on state-of-the-art research to support research and projects aiming at improving our understanding of climate. Do you want to join us? Check out our current job openings.
Latest News
On June 23rd-25st, the first experimental field campaign using our THEMIS artificial target took place at the Centre wallon de Recherches agronomiques (CRA-W ) in Gembloux, Belgium.
The campaign was carried out as part of the Fiducial Reference Measurements for Vegetation (FRM4Veg) project, funded by the European Space Agency (ESA) and led by National Physical Laboratory (NPL). Its primary objective is to establish protocols for traceable in situ measurements of vegetation-related parameters, such as surface reflectance, in support of Earth observation satellite calibration and validation.
We are pleased to announce that the Eradiate Workshop 2026 will take place on 2nd–3rd December 2026 at ESA/ESRIN in Frascati, Italy. Participation is free, but registration is mandatory!
This two-day hybrid event will introduce participants to Eradiate from a conceptual and practical point of view. The programme includes:
We are happy to report that the paper describing the first stable release of Eradiate (v1.0.0) ("Eradiate: an accurate and flexible radiative transfer model for earth observation and atmospheric science, Leroy et al.") is now published in the open-access journal Geoscientific Model Development. We thank all those who made this possible: current and past team members, funding entities, users, and reviewers. This is the closing of a chapter in Eradiate’s lifecycle, and the opening of a new one.
