Implementation of an UWB-based module designed for wireless intra-spacecraft communications

Traditionally, intra-spacecraft data distribution is performed using wired data-handling systems. However, this approach increases the complexity and dry mass of the satellite harness. Therefore, extensive research is done to replace, complement or extend the wired communications with wireless ones. In this context, this paper presents the UWB-based solution developed within the WiSAT project funded by ESA. Considering the determined set of requirements for intra-spacecraft wireless communications, the proposed VN360 UWB module implements a custom software stack of the ISA-100.11a protocol over the IEEE 802.15.4 UWB PHY layer. The solution is tested and validated in different laboratory environmental conditions (TRL 4), including the satellite mock-up built within WiSAT. The results prove the capacity of the VN360 UWB module to establish a reliable intra-spacecraft UWB connection.