Wireless Target Localization Using Median Weighted Least Square Error Metric in the Presence of Non-Line of Sight Signals

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

KHALILPOUR J.; RANJBAR J.; KAZEMINIA M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF ELECTRONIC AND CYBER DEFENCE Year:2020 | Volume:8 | Issue:2 (30) Page(s): 125-133

Download Full-Text

Persian Verion

View:

200

Download:

Cites:

Information Journal Paper

Title

Wireless Target Localization Using Median Weighted Least Square Error Metric in the Presence of Non-Line of Sight Signals

Author(s)

KHALILPOUR J. | RANJBAR J. | KAZEMINIA M. | Issue Writer Certificate

Keywords

LocalizationQ1

Weighted Least Square EerrorQ1

Non-line of Sight SignalsQ1

Constraint Non-linear OptimizationQ1

Abstract

In this paper, a device-based Localization method is proposed based on the weighted least square error. The most important challenge in Localization is the effect of Non-line of Sight Signals (NLoS) at reference nodes which cause outliers and degrade the estimation accuracy of Localization. To meet this challenge and avoid such consequences, a new method is introduced based on the combination of weighted reference nodes method and identification and elimination of the NLoS signals method. Another challenge is the dependency of NLoS signals on the transmission environment. Based on this reason, obtaining a probability density function (PDF) to analyze the behavior of NLoS signals is complex and time-consuming, specifically in device-based Localization methods that run on mobile wireless targets with limited battery. Therefore, in this paper, a low-complexity method of identification and weighting of NLoS signals is proposed without requiring priority knowledge regarding NLoS bias PDFs. In this method, the frequency of reference nodes in different estimation groups is used to identify and weight the NLoS signals. Finally, the target location is modeled via a Constraint Non-linear Optimization problem and is solved through the Lagrange method. Simulation results illustrate that the proposed method improves the performance of Localization in comparison to linear and nonlinear unweighted-Localization methods. In the proposed method, 35% of Localization errors are lower than 0. 25 m showing approximately 30% improvement in the Localization performance. Moreover, 95% of Localization errors are lower than 2 m, and the performance increase by 20% in comparison to the unweighted-Localization methods. In the case that the number of reference nodes is small, the proposed method provides higher reliability in the location estimation and specifically, when 35% of reference nodes are the line of sight, the estimation accuracy is increased significantly.

Cites

No record.

References

No record.

Cite

APA: Copy

KHALILPOUR, J., RANJBAR, J., & KAZEMINIA, M.. (2020). Wireless Target Localization Using Median Weighted Least Square Error Metric in the Presence of Non-Line of Sight Signals. JOURNAL OF ELECTRONIC AND CYBER DEFENCE, 8(2 (30) ), 125-133. SID. https://sid.ir/paper/399218/en

Vancouver: Copy

KHALILPOUR J., RANJBAR J., KAZEMINIA M.. Wireless Target Localization Using Median Weighted Least Square Error Metric in the Presence of Non-Line of Sight Signals. JOURNAL OF ELECTRONIC AND CYBER DEFENCE[Internet]. 2020;8(2 (30) ):125-133. Available from: https://sid.ir/paper/399218/en

IEEE: Copy

J. KHALILPOUR, J. RANJBAR, and M. KAZEMINIA, “Wireless Target Localization Using Median Weighted Least Square Error Metric in the Presence of Non-Line of Sight Signals,” JOURNAL OF ELECTRONIC AND CYBER DEFENCE, vol. 8, no. 2 (30) , pp. 125–133, 2020, [Online]. Available: https://sid.ir/paper/399218/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops