Time difference of arrival extraction from two-way ranging

Publikationstyp
Preprint
Date Issued
2022-04-12
Sprache
English
Author(s)
Rathje, Patrick  
Kiel University  
Landsiedel, Olaf  
TORE-URI
https://hdl.handle.net/11420/61042
Citation
arXiv: 2204.08996v3 (2022)
Publisher DOI
10.48550/arXiv.2204.08996
ArXiv ID
2204.08996v3
Two-Way Ranging enables the distance estimation between two active parties and allows time of flight measurements despite relative clock offset and drift. Limited by the number of messages, scalable solutions build on Time Difference of Arrival to infer timing information at passive listeners. However, the demand for accurate distance estimates dictates a tight bound on the time synchronization, thus limiting scalability to the localization of passive tags relative to static, synchronized anchors. This work describes the extraction of Time Difference of Arrival information from a Two-Way Ranging process, enabling the extraction of distance information on passive listeners and further allowing scalable tag localization without the need for static or synchronized anchors. The expected error is formally deducted. The extension allows the extraction of the timing difference despite relative clock offset and drift for the Double-Sided Two-Way Ranging and Single-Sided Two-Way Ranging with additional carrier frequency offset estimation.
Subjects
eess.SP
cs.IT
DDC Class
620: Engineering