Title :
Performance Analysis of FMCW Synchronization Techniques for Indoor Radiolocation
Author :
Gierlich, Roland ; Hüttner, Jörg ; Dabek, Alexander ; Huemer, Mario
Author_Institution :
Wireless Sensors & RF-Tcchnology (CT PS 7), Munich
Abstract :
A high precision localization system (HPLS) operating in the 5.8 GHz ISM band is presented. The system principle is based on the sequential exchange of frequency modulated continuous wave (FMCW) signals between identical radar stations. The round-trip time-of-flight (RToF) localization method requires exact synchronization of all involved stations. Consequently, accurate compensation of clock frequency drift is indispensible. We analyze the impact of clock deviation on synchronization accuracy and present a precise compensation method. The synchronization technique has been tested on a prototype system. Measurements showed a 3D-position accuracy of 2.8 cm under laboratory conditions.
Keywords :
frequency modulation; indoor radio; synchronisation; frequency 5.8 GHz; frequency modulated continuous wave signals; indoor radiolocation; performance analysis; round-trip time-of-flight localization method; sequential exchange; synchronization techniques; Bandwidth; Clocks; Frequency measurement; Frequency synchronization; Frequency synthesizers; Hardware; Performance analysis; Phase locked loops; Prototypes; Wireless sensor networks;
Conference_Titel :
Wireless Technologies, 2007 European Conference on
Conference_Location :
Munich
Print_ISBN :
978-2-87487-003-3
DOI :
10.1109/ECWT.2007.4403936
