Research Article
WiFi Assisted GPS for Extended Location Services
@INPROCEEDINGS{10.1007/978-3-642-13618-4_14, author={Saverio Cacopardi and Mauro Femminella and Gianluca Reali and Andrea Sedini and Fortunato Palella and Maurizio Turina and Andrea Vignoli and Giuseppe Confessore and Emanuela Scacchi and Angela Saraceno}, title={WiFi Assisted GPS for Extended Location Services}, proceedings={Personal Satellite Services. Second International ICST Confernce, PSATS 2010, Rome, Italy, February 2010 Revised Selected Papers}, proceedings_a={PSATS}, year={2012}, month={5}, keywords={WiFi GPS hybrid positioning performance analysis}, doi={10.1007/978-3-642-13618-4_14} }- Saverio Cacopardi
Mauro Femminella
Gianluca Reali
Andrea Sedini
Fortunato Palella
Maurizio Turina
Andrea Vignoli
Giuseppe Confessore
Emanuela Scacchi
Angela Saraceno
Year: 2012
WiFi Assisted GPS for Extended Location Services
PSATS
Springer
DOI: 10.1007/978-3-642-13618-4_14
Abstract
This paper shows a lightweight technique for extending the positioning capabilities of a global navigation satellite system to areas characterized by reduced satellite visibility. This technique includes the presence of a WiFi coverage, used to implement the concept. In particular we assume that a customer terminal can receive both Global Positioning System (GPS) signals and WiFi beacons broadcasted by an access point (AP). We show that if such beacons include the geo-referenced position of the relevant AP, the suitable usage of this information allows determining the GPS receiver position even if only three satellites are visible. Experimental results show that the achievable performance are similar to that obtainable by a plain GPS receiver using four visible satellites.
