Localising a device in a building using known access points

Ieuan Griffiths


Supervised by Stuart M Allen; Moderated by Matthew J W Morgan

GPS navigation has become a key part of modern life, with many using mobile map apps to find local buildings and shops. The map apps struggle significantly indoors however, and accuracy is a large issue. Even if buildings have the internal structure mapped out, these apps would struggle to identify the users location accurately due to traditional GPS having an accuracy of ~10m.

By identifying access points in a building and marking their location on a map, we should be able to crudely identify a location on the map based on the RSSI of each wifi network. By identifying more access points as the app is used and plotting a location of the map, we should be able to produce increasingly accurate locations on the map of the building. This project would require no access or control over the access points, so any access point broadcasting in the building could be used.

This project would seek to deliver a proof of concept mobile app based on a section of queens buildings, and an investigation into any limitations, or advantages to this approach.

Initial Plan (02/02/2020) [Zip Archive]

Final Report (15/05/2020) [Zip Archive]

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