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

Shih Chi Xiao, Li Ta Hsu, Shau Shiun Jan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
Pages2876-2884
Number of pages9
Publication statusPublished - 1 Dec 2011
Externally publishedYes
Event24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011 - Portland, OR, United States
Duration: 19 Sep 201123 Sep 2011

Publication series

Name24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
Volume4

Conference

Conference24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
CountryUnited States
CityPortland, OR
Period19/09/1123/09/11

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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