## 5 Conclusions  
The recent investments by private companies and start-ups in the space exploration sector have kicked off the so-called New Space Economy. The objective of New Space is to democratize space exploration, making it increasingly accessible to launch products into space. In this scope, the space agencies, and in particular the ESA, are working on the definition of newer communication standards to be adopted in present and future missions, for enhancing the re-usability of deployed systems and consequently providing a positive impact on the economy of space missions. This paper has presented the development of an EGSE for promoting the adoption of the CCSDS 131.2-B standard for telemetry applications in Earth observation missions. This is the standard selected by the ESA for future EO missions. For this reason, it is crucial to dispose of EGSEs compliant with it, for testing and evaluating satellites' transmissions and ground stations' receptions. Also, it is fundamental to provide low-cost systems to boost the use of CCSDS 131.2-B standard, fostering its early adoption in the next-generation missions. The standard itself is very complex and expensive to implement for both the transmitter and the receiver side, and, at the time of writing, is not used in any mission. To overcome this limitation, the implementation of a low-cost, flexible, SDR receiver based on GP-GPUs has been presented. It aims to provide a cheaper solution with respect to the state-of-the-art receivers, both for on-ground testing of CCSDS 131.2-B compliant transmitters and to be employed in next-generation missions, for receiving data from EO satellites. The proposed solution has been analyzed, presenting an overview of its structure and the development of the architecture, focusing on the implementation choices made to provide a high-performance solution. Then, the performance of the system has been evaluated, in terms of error recovery and data rate. Overall, the system has been demonstrated to have good performance with respect to other SW-based solutions, setting itself as a valid alternative with respect to the complex and expensive HW system at the state of the art. In fact, it is a flexible system and is easy to deploy and has a much lower cost (a few thousand dollars) with respect to the state-of-the-art HW receivers (hundreds of thousands of dollars). The presented solution will provide fundamental aid for the adoption of the CCSDS 131.2-B standard for next-generation EO ESA missions. It will promote the standard use by  
Figure 8: BER curves on linear AWGN channel, drawn for _GPU2_ implementation. Figure 9: BER curves on linear AWGN channel, drawn for _GPU3_ implementation. allowing the easy and low-cost testing of transmitters compliant with it, and by supporting the reception of data for missions where the requirements are relaxed (i.e., science missions). Moreover, the flexibility of the system easily allows for future development, involving the use of more GPUs in parallel, or higher-performance GPUs, increasing the data rate of the system. Conceptualization, R.C., G.G. and M.B. ; methodology, R.C., G.G. and M.B. ; software, R.C. ; validation, R.C., G.G. and M.B. ; formal analysis, R.C. and G.G. ; investigation, R.C. and G.G. ; resources, G.G. and M.B. ; data curation, R.C., G.G. and M.B. ; writing--original draft preparation, R.C. ; writing--review and editing, L.F.; visualization, R.C. ; supervision, L.F.; project administration, L.F.; funding acquisition, L.F. All authors have read and agreed to the published version of the manuscript. This research received no external funding. Derived data supporting the findings of this study are available from the corresponding author on request. The work presented in this paper has been carried out in collaboration with IngeniAts S.r.l., a SME working in the Aerospace industry. Authors [PERSON] and [PERSON] were employed by the company IngeniAts S.r.l.