Material Parameter Estimation for Sionna RT

Sionna is an open-source library for research in communication systems developed by Nvidia. One of the main components of the library is a differentiable ray-tracer (RT). Ray-tracing is a method of modeling radio propagation. The environment in which we want to model the radio propagation is represented as a scene, that is a 3D model with assigned radio materials.

This repository is related to the article Validation and Calibration of Ray-Tracing Systems in an Urban Railway Scenario and contains the code that was used to calibrate the Sionna ray-tracer, i.e. to estimate the parameters of the materials used in the scene.

The estimation of the material parameters is based on the measurements of the signal strength. The simulated signal strenght is compared with the measurements and we aim to minimize the mean absolute error.

The .zip folder contains the code as well as an example scene and example files with RX and TX data. A sionna.yml file that can be used to create a conda environment is also enclosed.

More details about the code and its use can be found in ReadMe.txt file.