Decimeter Positioning in an Urban Environment Through a Scalable Optical-Wireless Network
C.C.J.M. Tiberius (TU Delft - Mathematical Geodesy and Positioning)
G Janssen (TU Delft - Signal Processing Systems)
Jeroen Koelemeij (Vrije Universiteit Amsterdam)
Erik F. Dierikx (National Metrology Institute VSL)
C.E.V. Diouf (TU Delft - Mathematical Geodesy and Positioning)
Han Dun (TU Delft - Mathematical Geodesy and Positioning)
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Abstract
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).
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