How does Google Indoor Navigation work?

Question

For a project at my university I have to collect information about Google Indoor Maps. I spent several hours searching information about how Google Indoor Navigation really work

Answer 1

Indoor positioning uses WLAN interface. To estimate the real-time location of a user, location systems have to perform a number of steps and various calculations. The calculation of more than one distance from several Access Points (APs) could be used to estimate the exact location. The main principle states that signal strength at the receiver is inversely proportional to the square of the distance that the signal travels. RSS fingerprinting method is used which is based on recording and sampling of patterns of radio signals in specific environment called as pattern recognition or fingerprinting.