Indoor Global Localisation in Anchor-based Systems using Audio Signals
| Autor: | Rui Esteves Araujo, João Moutinho, Diamantino Freitas |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Signal processing
Audio signal Microphone Computer science Real-time computing 020206 networking & telecommunications Ocean Engineering 02 engineering and technology Oceanography Spread spectrum 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Fading Loudspeaker Forward error correction Data transmission |
| Zdroj: | Journal of Navigation. 69:1024-1040 |
| ISSN: | 1469-7785 0373-4633 |
| Popis: | 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 4·9 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|