POSITIONING SYSTEM FOR CONTINUOUSLY AND ACCURATELY UPDATING POSITION VALUE OF WIRELESS LAN AP, AND METHOD THEREFOR

摘要

The present invention compares a signal strength according to a position value of a wireless LAN AP recorded in a wireless LAN AP position database (120) with a signal strength according to wireless LAN AP information of neighboring wireless LAN APs and a detected position value obtained through an actual search performed by position detection devices (88, 84), and if the signal strength according to the wireless LAN AP information of the neighboring wireless LAN APs and the detected position value obtained through an actual search performed by the position detection devices (88, 84) is great, then the detected position value is closer to a corresponding wireless LAN, and the position value of the corresponding wireless LAN AP in the wireless LAN AP position database (120) and the signal strength is substituted with the value obtained through the actual search and is updated.