Database calibration algorithms of an indoor positioning system based on the fingerprint method

Shih Chi Xiao, Li Ta Hsu, Shau Shiun Jan

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

There is currently, without a doubt, a great need for real time indoor positioning systems. Therefore, a low cost and low power consumption Real Time Indoor Positioning System (RTIPS) that is integrated with a self-developed indoor Geographic Information System (GIS) has been developed by Hsu, et al of National Cheng Kung University (NCKU) in Taiwan. However, RTIPS test bed was initially set up in classroom site that was small and geometrically simple. Once the application location is larger, the challenge we meet is the positioning database calibration because the costs related to time and labor for calibrating a wide area are much higher than those for a smaller site. The purpose of this paper is to achieve a more scalable system for an indoor positioning system; thus, this paper extends study on the database calibration algorithms of a fingerprint positioning algorithm. In the database calibration stage, the collected signal quality might be affected if the positioning space is geometrically complex. This is because of the fact that the signal transmission paths will be more complicated. As a result, we place an emphasis on utilizing two spatial interpolation methods including: 1) the Inverse Distance Weighting (IDW) method; 2) the Kriging method, used to yield a denser database from the raw data measurements. Additionally, another purpose of this paper is to establish a procedure designed to determine the parameters of the theoretical models since most research has mentioned parameters regarding the 'sill' and 'range' estimation of a semi-variogram that usually depend on a trial and error approach, which consumes a great deal of time. Finally, this paper utilizes the Kriging method as an available tool into the RTIPS and also to achieve a more flexible system in application.

原文English
主出版物標題24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
頁面2876-2884
頁數9
出版狀態Published - 2011 十二月 1
事件24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011 - Portland, OR, United States
持續時間: 2011 九月 192011 九月 23

出版系列

名字24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
4

Other

Other24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
國家/地區United States
城市Portland, OR
期間11-09-1911-09-23

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 通訊

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