Global System for Location and Guidance of Disabled People: Indoor and Outdoor Technologies Integration

This paper deals with the problem of personal location and guidance in indoor and outdoor environments. The authors analyze different technologies which can be applied to this task. The goal is providing the user with the most accurate and reliable technology depending on the user profile and environment. Indoor location technologies are analyzed and compared from different points of view, highlighting relevant parameters which determine the overall system performance. In particular, Bluetooth, WiFi, RFID, UWB and ultrasounds indoor location technologies are analyzed. The indoor location system will be integrated with an outdoor location one based on GPS to provide global coverage. Based on this goal, various integration issues are described and analyzed. The paper remarks the guidelines for successfully deploying such a kind of complex system. The research has been developed within the ELISA project framework - intelligent location environment for assistive services- www.elisapse.es.