Laser Altimetry Simulation Enhances Mercury Surface Analysis

This research focuses on simulating laser travel-time on Mercury to enhance the capabilities of the BepiColombo Laser Altimeter (BELA) in measuring surface microtexture. The simulation utilizes the WARPE software to model two types of microtextures: compact slab and granular. The study emphasizes the importance of considering physical properties such as grain size, material composition, and porosity when simulating laser pulse shapes, rather than relying solely on radiative properties. The simulation chain includes a precise model of the BELA measurement output, allowing for the assessment of the instrument's ability to detect variations in surface microtexture. The focus on ice-covered surfaces with longer penetration depths is particularly relevant, given the potential for water ice deposits in permanently shadowed craters on Mercury. By improving the accuracy of laser altimetry data, this research contributes to a better understanding of Mercury's surface composition and topography, which is crucial for future exploration and resource assessment efforts. The ability to accurately characterize surface microtexture is essential for identifying potential landing sites and for interpreting the geological history of the planet. This work highlights the importance of combining simulation and experimental data to advance our knowledge of planetary surfaces.

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