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http://dx.doi.org/10.7840/kics.2012.37C.10.1004

Clock Synchronization for Multi-Static Radar Under Non-Line-of-Sight System Using Robust Least M-Estimation  

Shin, Hyuk-Soo (고려대학교 전파통신공학과 통신신호처리 연구실)
Yeo, Kwang-Goo (고려대학교 전파통신공학과 통신신호처리 연구실)
Joeng, Myung-Deuk (국방과학연구소)
Yang, Hoongee (광운대학교 전파공학과)
Jung, Yongsik (광운대학교 전파공학과)
Chung, Wonzoo (고려대학교 전파통신공학과 통신신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37C, no.10, 2012 , pp. 1004-1010 More about this Journal
Abstract
In this paper, we propose the algorithm which considers applying recently proposed clock synchronization techniques with quite high accuracy in a few wireless sensor networks researches to time synchronization algorithm for multi-static radar system and especially overcomes the limitation of previous theory, cannot be applied between nodes in non-line of sight (NLOS). Proposed scheme estimates clock skew and clock offset using recursive robust least M-estimator with information of time stamp observations. And we improve the performance of algorithm by tracking and suppressing the time delays difference caused by NLOS system. Futhermore, this paper derive the mean square error (MSE) to present the performance of the proposed estimator and comparative analysis with previous methods.
Keywords
Recursive least M-estimation(RLM); multi-static Radar; non-line-of-sight; wireless sensor networks(WSNs);
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