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A survey of indoor localization systems

Nowadays, indoor and outdoor location-aware applications has been become increasingly widespread. Location information for outdoor applications is obtained from well-known systems such as GPS and GLONASS. Although there are several systems for indoor localization, there is not a consensus on them like the outdoor. In this study, several aspects of indoor localization systems such as system topologies, mesaurement techniques, location calculation methods, performance metrics, signal types are overviewed. Some foresights are also made about the future of indoor localization.