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TOA/TDOA Estimation Method Based on Two Way Ranging with Considering Clock Drift Effect  

Park, Woon-Yong (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Park, Cheol-Ung (숭실대학교 정보통신전자공학과)
Choi, Sung-Soo (한국전기연구원 융합기술연구단)
Lee, Won-Cheol (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.7C, 2007 , pp. 608-615 More about this Journal
Abstract
Generally time of arrival (TOA) information via two way communications can be derived by accurate round trip time (RTT) between two devices. However, response time demanded in RTT measurement is long, a serious TOA error is caused by each different clock drift between two devices. In order to solve this problem, we propose the TOA and time difference of arrival (TDOA) estimation scheme with mitigating clock drift effect. To verify the performance of proposed method, we compared the proposed scheme with one way based TDOA acquisition method introduced by IEEE 802.15.4a Task Group and then we could conclude that the proposed method has better performance over other methods.
Keywords
Time Of Arrival; Time Difference Of Arrival; GDOP; Clock Drift;
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  • Reference
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