However, a national team of companies is broadcasting a satellite navigation signal to explore the creation of a sovereign national capability in resilient positioning, navigation and tinning (PNT) for aviation and maritime use - UK Space-Based Augmentation System (UKSBAS). The team is led by UK-based Inmarsat, a world leader in global mobile satellite communications, working with British partners Goonhilly Earth Station Ltd from Cornwall and Nottingham-based GMVNSL.They are delivering UK Space Agency-funded tests with the European Space Agency (ESA) through the latter's Navigation Innovation and Support Program (NAVISP). The augmentation signal, being broadcast in coordination with the US Federal Aviation Administration (FAA), ESA and the EU Space Programme Agency (EUSPA), is now stable, enabling on-going testing and validation by industry, regulators and users.
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