Localization estimation system using wireless LAN

In recent years, personal navigation attracts attention due to spreading of smart phones. The navigation widely used for the car until now. The car navigation displays its position on a map using GPS and driving distance. A personal navigation with a smart phone can expect business for sightseeing guidance to a stranger, or providing O2O (Online to Offline) service in a shopping mall. Personal navigation systems have been used until now, however, some problems are left behind in order to further large spread. This contribute will show some countermeasures.