SISPO: Space Imaging Simulator for Proximity Operations
Mihkel Pajusalu, Iaroslav Iakubivskyi, Gabriel J\"org, Schwarzkopf, Olli Knuuttila, Timo V\"ais\"anen, Maximilian B\"uhrer, and Hans Teras, Guillaume Le Bonhomme, Mario F. Palos, Jaan Praks, and Andris Slavinskis

TL;DR
SISPO is a physically-based, Blender-based imaging simulator designed for small solar system body fly-by and planetary surface missions, supporting realistic rendering, optical effects, and mission planning tools.
Contribution
The paper introduces SISPO, a novel, open-source simulation environment that enhances small-body mission design with realistic imaging and optical effect modeling.
Findings
Supports realistic surface rendering with Blender Cycles
Includes models for dust and gas optical effects
Simulates common image aberrations and distortions
Abstract
This paper describes the architecture and demonstrates the capabilities of a newly developed, physically-based imaging simulator environment called SISPO, developed for small solar system body fly-by and terrestrial planet surface mission simulations. The image simulator utilises the open-source 3D visualisation system Blender and its Cycles rendering engine, which supports physically based rendering capabilities and procedural micropolygon displacement texture generation. The simulator concentrates on realistic surface rendering and has supplementary models to produce realistic dust- and gas-environment optical models for comets and active asteroids. The framework also includes tools to simulate the most common image aberrations, such as tangential and sagittal astigmatism, internal and external comatic aberration, and simple geometric distortions. The model framework's primary…
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