紀要論文

無線LANによる建物内地図構築手法の設計と実装

An In-door Map Construction Technique using WiFi Signal Information

jpn

18810667

https://doi.org/10.15002/00009586

法政大学大学院情報科学研究科

法政大学大学院紀要. 情報科学研究科編

8

149

154

2013-03-24

Version of Record

The received signal strength of wireless LAN access point is useful to estimating the location inside a building. However, fluctuation of the signal strength may decrease the accuracy of the estimated location. In the previous work, location of the WiFi access point (AP) needs to be in advance known and are difficult to maintain after gathering them. The goal of this study is to extend information on the WiFi APs dynamically, then construct a database automatically. In order to calculate the distances between Wifi APs and user terminals the scheme used free-space path loss signal strength is introduced. The location of a user terminal is calculated from the ratio of the distances between access points the terminal using Apollonius circle. The location of the unknown access points are estimated in similar way. The result shows that the location estimation was successful within an error of less than two meters on terminal location and three meters on unknown wireless access points.

Article

AA12222297