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First Results of Hyperspectral Scene Generation in Preparation of the Chime Imaging Spectrometer Mission

End-To-End mission performance simulators (E2Es) are software tools developed to support satellite mission preparatory activities. For passive remote sensing missions, E2Es generate synthetic scenes simulating the interaction of the solar radiation between the atmosphere and the surface; therefore allowing the estimation of the mission performance before its launch. In this paper, we present the CHIME Scene Generator Module (SGM) as part of CHIME E2Es, with state-of-the-art parallelization and optimization that give a performance allowing to obtain a whole year of daily worldwide Top-Of-Atmosphere radiance images in a matter of hours. The CHIME SGM generates 100x200km hyperspectral scenes with elevation effects, shadow projecting clouds, and detailed surface definition in less than an hour. This high performance is due to the producer-consumer design and clever use of the Intel Threading Building Blocks library. The design paves the way to integrate a sensor definition as a library in the part of the convolution of the SGM algorithm, giving an even better performance in the processing chain of the CHIME E2Es.