TY - JOUR T1 - Decimeter Positioning in an Urban Environment Through a Scalable Optical-Wireless Network JF - NAVIGATION: Journal of the Institute of Navigation JO - NAVIGATION DO - 10.33012/navi.589 VL - 70 IS - 3 SP - navi.589 AU - Christian Tiberius AU - Gerard Janssen AU - Jeroen Koelemeij AU - Erik Dierikx AU - Cherif Diouf, AU - Han Dun Y1 - 2023/09/21 UR - https://navi.ion.org/content/70/3/navi.589.abstract N2 - This paper presents a terrestrial networked positioning system that obtains a reliable time reference from a national time scale realization and distributes it in a prototype to six roadside base stations through a fiber-optic Gigabit Ethernet network. Wireless wideband signals are transmitted by the base stations, thereby enabling positioning by a mobile receiver with an accuracy of one decimeter in a multipath urban environment. The scalability and compatibility of this system with existing telecommunication-network technologies paves the way for wide-area global navigation satellite system-independent back-up systems for timing and positioning with improved coverage and performance. The results presented in this paper are based on research carried out within the scope of a project funded by the Dutch Research Council (NWO, project 13970). ER -