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

Authors: Shensheng Tang; Yi Xie; Liqiang Zhang; Chenghua Tang

Addresses: 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

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.

Keywords: target positioning; LOS; line-of-sight; NLOS; non-line-of-sight; TDOA; radar targets; time-difference-of-arrival; CRLB; Cramer-Rao lower bound; positioning accuracy.

DOI: 10.1504/IJWMC.2013.056547

International Journal of Wireless and Mobile Computing, 2013 Vol.6 No.4, pp.313 - 320

Received: 08 Dec 2012
Accepted: 05 Jan 2013
Published online: 16 Oct 2014 *

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