Development of a real time indoor location based service test bed

Li Ta Hsu, Wen Ming Tsai, Shau Shiun Jan

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

3 Citations (Scopus)

Abstract

As the increasing needs of indoor applications, the development of a real time indoor positioning system is essential. The purpose of this paper is to develop a low cost and low power consumption Real Time Indoor Positioning System (RTIPS) and then integrate this RTIPS with a self-developed indoor Geographic Information System (GIS) to form a indoor Location Based Service (LBS) prototype. In this paper we utilize the Wireless Sensor Network (WSN) as our indoor positioning system, and the ZigBee radio is used as our wireless protocol because of its low cost and low power consumption. The positioning algorithm used in this paper is the fingerprinting method which based on the Received Signal Strength (RSS). In this paper we evaluate the positioning results with different matching algorithms including 1) the Nearest Neighbor (NN) algorithm, 2) K-Weighted Nearest Neighbors (KWNN) algorithm with various values of K, and 3) the probabilistic approach based on the kernel method. We also implement the suboptimal filter, the particle filter, to improve the performance of the RTIPS. The trade-off study between the positioning accuracy and the number of particles used in the particle filter will be investigated in this paper. Additionally, to provide the indoor LBS for users, this paper proposes a rapid and efficient procedure to build a 3D indoor Geographic Information System (GIS). This GIS which integrates the Computer-Aided Design (CAD) and the Virtual Reality Modeling Language (VRML) technique is easy to update and maintain in future. In this paper the Department of Aeronautics and Astronautics building at National Cheng Kung University in Taiwan is used to demonstrate a real time indoor LBS prototype which successfully integrates the RTIPS with the self-developed indoor GIS.

Original languageEnglish
Title of host publication23rd International Technical Meeting of the Satellite Division of the Institute of Navigation 2010, ION GNSS 2010
Pages1175-1183
Number of pages9
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event23rd International Technical Meeting of the Satellite Division of the Institute of Navigation 2010, ION GNSS 2010 - Portland, OR, United States
Duration: 21 Sep 201024 Sep 2010

Publication series

Name23rd International Technical Meeting of the Satellite Division of the Institute of Navigation 2010, ION GNSS 2010
Volume2

Conference

Conference23rd International Technical Meeting of the Satellite Division of the Institute of Navigation 2010, ION GNSS 2010
Country/TerritoryUnited States
CityPortland, OR
Period21/09/1024/09/10

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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