Go to top
European Commission logo
RAMI website


RAMI3 phase

Within RAMI an environment is deemed heterogeneous if its properties are dependent on location (horizontal spatial coordinates). Four different 'heterogeneous environments' have been prescribed for this phase of RAMI. In particular the "floating spheres" baseline scenarios - which were originally introduced during the first phase of RAMI in 1999 - have been expanded to include conservative scattering conditions. Similarly, the "conifer forest" experiment now features a no-topography reference run, and the "real-zoom" experiment boasts multiple field-of-view simulations.

In addition two new measurements are introduced:

Heterogeneous environments are typically represented with 3-dimensional models. If applicable by the RT model at hand, cyclic boundary conditions must be applied to all test cases unless specified otherwise on the individual measurement description pages. Furthermore, the various measurements that are required to be carried out for each test case, are always defined with respect to a reference plane which - unless specified otherwise - covers the entire test case area (known as the "scene"), and is located at the top-of-the-canopy, that is, just above the highest structural element in the scene.