Analysis of TDOA based radar target positioning in LOS and NLOS environments

Authors:
Shensheng Tang;Yi Xie;Liqiang Zhang;Chenghua Tang
Affiliations:
Department of Engineering Technology, Missouri Western State University, St. Joseph, MO 64507, USA;School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China;Department of Computer and Information Sciences, Indiana University South Bend, South Bend, IN 46615, USA;School of Computer Science & Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
Venue:
International Journal of Wireless and Mobile Computing
Year:
2013

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Abstract

We present the analysis of a radar target positioning technique in both Line-of-Sight LOS and Non-Line-of-Sight NLOS environments. A Time-Difference-of-Arrival TDOA method is investigated to find the target position and its positioning accuracy in terms of the Cramer-Rao Lower Bound CRLB. Explicit analytical results are derived under both the only LOS condition and the mixed LOS and NLOS condition. Numerical examples are provided for further quantitative evaluation.