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Research on the Positioning Technology of RSS in the MixedEnvironment of the Line of Sight and Non-line of Sight(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2017年04期
Page:
71-
Research Field:
计算机工程
Publishing date:

Info

Title:
Research on the Positioning Technology of RSS in the MixedEnvironment of the Line of Sight and Non-line of Sight
Author(s):
Guo Qing1; 2; 4; Ke Wei1; 2; 4; Tang Wanchun1; 2; 4; Zhang Xueying3; 4; Sheng Yehua3; 4
(1.School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Key Laboratory on Opto-electronics Technology,Nanjing Normal University,Nanjing 210023,China)(3.Key Laboratory of Virtual Geographic Environment of Ministry of
Keywords:
LOS; NLOS; mixed Gauss model; DEM algorithm; GDOP
PACS:
TN911
DOI:
10.3969/j.issn.1672-1292.2017.04.012
Abstract:
A dynamic positioning method based on the received signal strength(RSS)is proposed to solve the problem of low accuracy and low robustness of wireless location in the mixed environment of the line of sight(LOS)and non line of sight(NLOS). This method adopts a mixed Gauss model to describe the communicative effects of both the LOS and NLOS environment to overcome problem of identifying them existing in current methods. Morever,a dynamic expectation maximum(DEM)algorithm is presented for real-time adjust of the model parameters,which can be suitable for environment time-varying characteristics. Furthermore,considering the influence on locating accuracy caused by the geometric relation of test positions,a method of test points selection is proposed on the basis of geometric dilution of precision(GDOP). The simulation results show that the algorithm presented in this paper can not only have a high positioning accuracy,but also fit the dynamic changes of the environment.

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Last Update: 2017-12-30