# Robust and Reconfigurable On-Board Processing for a Hyperspectral Imaging Small Satellite
## Conclusions  
A new hardware and software design of a hyperspectral imaging payload with on-board processing capabilites is presented. The design is used in the HYPSO-1 hyperspectral remote sensing satellite. HYPSO-1 continues to reliably record data demonstrating the success of the robust hyperspectral imaging payload OPU design using low-cost COTS components. The software performed reliably with few unexpected issues. Little changes in the architecture are necessary for the future planned satellites. The presented tests have aided configuring and scheduling satellite operations. The method has characterized the capability of the OPU and aided optimal planning for various operational modes for use in the HYPSO-1 satellite. HYPSO-2, with identical OPU, but revised software version, is being finalized and is planned for launch in summer 2024. For the planned HYPSO-3 satellite, the SoC will likely be upgraded to a Kria K26 SoM, featuring faster and more CPU cores and a larger FPGA, four-times more DRAM and also full 1 Gbit/s ethernet performance for better frame rate support at higher resolutions. Conceptualization, D.D.L., M.O. and T.A.J. ; methodology, D.D.L., M.O., S.B., R.B. and J.L.G. ; software, D.D.L. and S.B. ; validation, D.D.L., S.B. and R.B. ; investigation, D.D.L. and M.O. ; resources, M.O., R.B., T.A.J. and A.J.S. ; data curation, D.D.L., S.B. and J.L.G. ; writing--original draft preparation, D.D.L., M.O., T.A.J. and A.J.S. ; writing--review and editing, D.D.L., M.O., S.B., R.B., J.L.G., T.A.J. and A.J.S. ; visualization, D.D.L. ; supervision, T.A.J. and A.J.S. ; project administration, T.A.J. and A.J.S. ; funding acquisition, T.A.J. and A.J.S. All authors have read and agreed to the published version of the manuscript. This work was supported by the Research Council of Norway through the Centre of Excellence funding scheme NTNU AMOS (grant No. 223254), MASSIVE (grant No. 270959), HYPSCI (grant No. 325961), Green-Platform (grant No. 328724) and ARIEL (grant No. 333229), EEA NO Grants 2014-2021 under Project ELO-Hyp (contract No. 24/2020), the Norwegian Space Agency and the European Space Agency through PRODEX (No. 4000132515). No data is made available. **Acknowledgments:** The authors acknowledge the work by numerous bachelor and master students to develop, integrate and support the work presented in this article. In particular [PERSON] [74], [PERSON] [75], [PERSON] [76], [PERSON] [77], [PERSON] [78], and [PERSON] [79]. **Conflicts of Interest:** The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. * [PERSON] and [PERSON] (2018) [PERSON]; [PERSON] Onboard Processing with Hybrid and Reconfigurable Computing on Small Satellites. _Proc. IEEE_**2018**, _106_, 458-470. [CrossRef]
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* Consultative Committee for Space Data Systems.