Monte Carlo Radiative Transfer Model for Airless Planetary Surfaces

<p>The poster presents the development of a Monte Carlo Radiative Transfer (MCRT) model to simulate the bidirectional reflectance distribution function (BRDF) of airless planetary surfaces. The study applies both direct and indirect photon path-tracing approaches to analyse light–regolith interactions and validate the simulation against established models (Ciarniello et al., 2014). The model incorporates key surface parameters such as single-scattering albedo, filling factor, and regolith particle properties, with ongoing work to include anisotropic scattering through the Henyey–Greenstein phase function. The results aim to enhance the understanding of reflectance behaviour on airless bodies, such as the Moon and Ceres, and improve radiative-transfer modelling accuracy for planetary remote sensing applications.</p>