Concept of image based Non-Line-of-Sight (NLOS) localization in multipath environments
Chen, Si Wen
Seow, Chee Kiat
Date of Issue2012
Progress in Electromagnetics Research Symposium, PIERS 2012 Moscow
School of Electrical and Electronic Engineering
Current bidirectional localization schemes are able to locate a mobile device using Line-of-Sight (LOS) or Non-Line-of-Sight (NLOS) Time-of-Arrival (TOA) and Angle-of-Arrival (AOA) information measured at both the mobile device and reference device. This information is used to derive line of possible mobile device position (LPMD). The intersection points of LPMDs are used to estimate mobile position. However these algorithms do not work well in a dense multipath environment with high levels of TOA and AOA measurement noise. In addition, these techniques require at least two single bounce reflection paths to locate the mobile position. This paper explores the feasibility of using multiple image theory to obtain the image point of the NLOS single bounce multipath to perform NLOS localization and overcome the abovementioned limitations. Simulation results have shown that there are few variance shape of image point with various combinations of TOA and AOA variance noises. With the discovery of these variance shapes in the image point, it opened up new method and possibility to perform NLOS localization in a more effective and accurate way.
DRNTU::Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution
© 2012 Progress in Electromagnetics Research Symposium(PIERS) Committee. This paper was published in Progress in Electromagnetics Research Symposium and is made available as an electronic reprint (preprint) with permission of Progress in Electromagnetics Research Symposium(PIERS) Committee. The paper can be found at the following official URL: [https://piers.org/piersproceedings/download.php?file=cGllcnMyMDEyTW9zY293fDRBNl8xNDk5LnBkZnwxMjAzMjAwNDQ4Mjc=]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.