Electronic transceivers for receiving and transmitting GPS-like positioning signals that are synchronised to the GPS satellites or other reference timing signals; computer software for controlling the reception, transmission and synchronisation of GPS-like positioning signals; navigation and positioning equipment, namely, pseudolite transmitters, electronic position-signal receivers and electronic position-signal transmitters; computer hardware and firmware configured to control pseudolite transmitters, electronic position-signal receivers and electronic position-signal transmitters; computer software which determines precise positioning from information contained in broadcast GPS-like positioning signals; instruments being pseudolite transmitters, electronic position-signal receivers, electronic position-signal transmitters, and computerised hardware, firmware and software used to determine position in land and marine surveying, mapping, tracking and navigation, and tracking and navigation of inanimate and animate objects; electronic timing and synchronisation hardware, firmware and software for use in the synchronisation of wired or wireless networks; electronic timing and synchronisation hardware, firmware and software for use in time transfer across wired or wireless networks; electronic timing and synchronisation hardware, firmware and software for use in point-to-point time transfer

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