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A Study on UWB Ranging and Positioning Technique using Common Clock  

Park, Jae-Wook (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Choi, Yong-Sung (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Lee, Soon-Woo (한국전기연구원)
Lee, Won-Cheol (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.12A, 2010 , pp. 1128-1135 More about this Journal
Abstract
A wireless positioning system using ultra-wideband (UWB) for indoor wireless positioning uses ranging data in order to accurately estimate location. Commonly, ranging uses time of arrival (TOA), time difference of arrival (TDOA) based on arrival time. The most fundamental issue in the ranging for wireless positioning is to obtain clock synchronization among the sensor nodes and to correct an error caused by the relative clock offset from each node. In this paper, we propose ranging and positioning technique using common clock in order to solve both clock synchronization and clock offset problems. To verify the performance of proposed, we simulated ranging and positioning in channel model introduced by IEEE 802.15.4a Task Group and then results show that location estimation is unaffected by clock offset.
Keywords
Clock Offset; Synchronization; Common Clock; UWB Positioning; TDOA;
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  • Reference
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