Indoor Global Localisation in Anchor-based Systems using Audio Signals

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

João Moutinho (Autor) FEUP; Freitas, D (Autor) Outra; Rui Esteves Araújo (Autor) FEUP

Revista

Título: Journal of Navigation

Vol. 69

Páginas: 1024-1040

ISSN: 0373-4633

Editora: Cambridge University Press

Indexação

ISI Web of Knowledge - 1 Citação

ISI Web of Science

Scopus

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17