Location-based service

Hybrid positioning system

Positioning system

Service (business)

Mathematics

Accelerometer

Operating system

World Wide Web

Economy

Fingerprint recognition

Economics

Geolocation

Mobile device

Geometry

Indoor positioning system

Fingerprint (computing)

Computer science

Global Positioning System

Real-time computing

Point (geometry)

Computer security

Telecommunications

IEEE Access

Indoor localization techniques are becoming popular in order to provide a seamless indoor positioning system enhancing the traditional GPS service that is only suitable for outdoor environments. Though there are proprietary and costly approaches targeting high accuracy positioning, Wi-Fi and BLE networks are widely deployed in many public and private buildings (e.g. shopping malls, airports, universities, etc.). These networks are accessible through mobile phones resulting in an effective commercial off-the-self basic infrastructure for an indoor service. The obtained positioning accuracy is still being improved and there is ongoing research on algorithms adapted for Wi-Fi and BLE and also for the particularities of indoor environments. This paper focuses not only on indoor positioning techniques, but also on a multimodal approach. Traditional proposals employ only one network technology whereas this paper integrates two different technologies in order to provide improved accuracy. It also sets the basis for combining (merging) additional technologies, if available. The initial results show that the positioning service performs better with a multimodal approach compared to individual (monomodal) approaches and even compared with Google's geolocation service in public spaces such as airports.

A Multimodal Fingerprint-Based Indoor Positioning System for Airports