Abstract: Airfield surveillance unit (11) for detecting airfield traffic and airfield multilateration system comprising such airfield surveillance unit. The airfield surveillance unit comprises a power supply module (113), a first radio antenna (111) configured to receive an aircraft transponder signal, a receiver module (112) coupled to the power supply module (113) and to the first radio antenna (111) and comprising a first data communication port (1122, 1123). The receiver module (112) is operable to convert the aircraft transponder signal received by the first radio antenna (111) to a multilateration-purpose signal for transmission via the first data communication port. The airfield surveillance unit further comprises a second radio antenna (118) and a 5G communication module (117) coupled to the power supply module (113) and configured to be coupled to the second radio antenna for operating as a transceiver for a mission critical private 5G cellular network.

Abstract: Ultra-wideband positioning system (100) for determining a position of at least one entity (200) on an airport field comprising at least one of a manoeuvring area (310) and an apron (350), said system comprising: —at least one airport light-signalling device (801), in particular an approach light, a runway light, a taxiway light, an elevated light, an inset light, a light box, or a visual docking guidance system, said device (801) being located on or around the least one of the manoeuvring area (310, 320) and the apron (350); wherein the at least one airport light-signalling device (801) comprises a positioning unit (400) being arranged in or on the at least one airport visual-signalling device (801), said unit (400), —a position determining unit (700) in data communication with the positioning unit (400) of the at least one airport light-signalling device (801), said position determining unit (700) being configured to calculate the position of the at least one entity (200).

Abstract: Airport signalling system, comprising: at least one signalling unit (200), each comprising at least one airport signalling device and a first communication device; a control unit configured to control operation of the at least one signalling unit (200), a central communication unit operably coupled to the control unit and configured for data communication with at least one signalling unit (200), characterised in that the at least one signalling unit (200) comprises at least two signalling units (200) including each a first communication device configured to receive and/or transmit ultra-wideband pulse radio signals and in that said the at least two signalling units (200) are configured to exchange ultra-wideband pulse radio signals through their respective first communication device.

Abstract: Airfield surveillance unit (11) for detecting airfield traffic and airfield multilateration system comprising such airfield surveillance unit. The airfield surveillance unit comprises a power supply module (113), a first radio antenna (111) configured to receive an aircraft transponder signal, a receiver module (112) coupled to the power supply module (113) and to the first radio antenna (111) and comprising a first data communication port (1122, 1123). The receiver module (112) is operable to convert the aircraft transponder signal received by the first radio antenna (111) to a multilateration-purpose signal for transmission via the first data communication port. The airfield surveillance unit further comprises a second radio antenna (118) and a 5G communication module (117) coupled to the power supply module (113) and configured to be coupled to the second radio antenna for operating as a transceiver for a mission critical private 5G cellular network.