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Consejo Nacional de Ciencia y Tecnología, CONACYT: 236188
Spanish National Plan for Scientific and Technical Research and Innovation: TEC2013-47682-C2-1
Generically Dependent Continuant
RDF description of Hybrid visible light and ultrasound-based sensor for distance estimation - http://orbis.uaslp.mx/vivo/individual/scopus4914
Article
Information Content Entity
Cricket sensor; Distance measurement; Optical wireless communications; Visible light communications; Visible light positioning Base stations; Distance measurement; Electromagnetic pulse; Light; Radio waves; Signal receivers; Telecommunication services; Time difference of arrival; Ultrasonic waves; Visible light communication; Wireless telecommunication systems; Distance estimation; Indoor locations; Measurement procedures; Mobile receiver; Optical wireless communications; Radio frequencies; Ultrasound signal; Visible light; Location based services
Distance estimation plays an important role in location-based services, which has become very popular in recent years. In this paper, a new short range cricket sensor-based approach is proposed for indoor location applications. This solution uses Time Difference of Arrival (TDoA) between an optical and an ultrasound signal which are transmitted simultaneously, to estimate the distance from the base station to the mobile receiver. The measurement of the TDoA at the mobile receiver endpoint is proportional to the distance. The use of optical and ultrasound signals instead of the conventional radio wave signal makes the proposed approach suitable for environments with high levels of electromagnetic interference or where the propagation of radio frequencies is entirely restricted. Furthermore, unlike classical cricket systems, a double-way measurement procedure is introduced, allowing both the base station and mobile node to perform distance estimation simultaneously. © 2017 by the authors; licensee MDPI, Basel, Switzerland.
Hybrid visible light and ultrasound-based sensor for distance estimation