Indoor Global Localisation in Anchor-based Systems using Audio Signals

• Type: Article in International Scientific Journal
• Date: 2016

Authors

João Moutinho (Author) FEUP; Freitas, D (Author) Other; Rui Esteves Araújo (Author) FEUP

Journal

Title: Journal of Navigation

Vol. 69

Pages: 1024-1040

ISSN: 0373-4633

Publisher: Cambridge University Press

Indexing

ISI Web of Knowledge - 1 Citation

ISI Web of Science

Scopus

Other information

Authenticus ID: P-00K-9SG

DOI: 10.1017/s0373463315001095

Abstract (EN): This paper presents a method that allows mobile devices to be globally self-localised in indoor localisation systems by transmitting to them data from position reference anchors. The objective is to establish a reliable one-way down-link communication through signals used in the localisation process in a typically strong fading and multipath channel environment. This is accomplished by using signal processing techniques, including coding and forward error correction, to transmit data using a specific transmission control protocol. Experimental results, using audio as the signal between anchors and the mobile device, demonstrate successful data transmission in realistic scenarios like a common noisy and reverberant room. Spread spectrum noise-like masked signals 49 dB below background noise were sufficient to attain correct data reception at four metres distance between a loudspeaker anchor and a mobile device's microphone.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 17