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Title: | UWB-TOA geolocation techniques in indoor environments |
Authors: | Rashid, A. Saeed Sabira, Khatun Borhanuddin, Mohd. Ali Mohd. Khazani, Abdullah |
Keywords: | Indoor Multipath Ranging Time-of-Arrival (ToA) Ultra-wideband (UWB) |
Issue Date: | Sep-2006 |
Publisher: | The Institution of Engineers, Malaysia |
Citation: | The Journal of the Institution of Engineers, Malaysia, vol. 67(3), 2006, pages 13-17 |
Abstract: | Ultra-wideband (UWB) radio is a new carrierless communication scheme using impulses and is a candidate technology for future communication and ranging applications. In this paper, we consider the problem of node localizing in ad-hoc networks, in which positioning algorithm only exploits the high precision ranging capabilities offered by UWB and does not rely on GPS. A Time-of-Arrival (ToA) based ranging scheme using UWB radio link is proposed. In this paper, the problem of ToA estimation in multipath channels, source of estimation error are discussed. Two-way ranging (TWR) scheme was used for network synchronisation. Results show that the accuracy enhancement depends on two principal factors: the strength of multipath components and the variance of non-line-of-sight (NLOS) delays, which it shows that DS-UWB is best suited for ranging, due to its larger bandwidth and its higher frequencies of operation. |
Description: | Link to publisher's homepage at http://www.myiem.org.my/ |
URI: | http://myiem.org.my/content/iem_journal_2006-177.aspx http://dspace.unimap.edu.my/123456789/13559 |
ISSN: | 0126-513X |
Appears in Collections: | IEM Journal |
Files in This Item:
File | Description | Size | Format | |
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013-017_geolocation techniq.pdf | 846.54 kB | Adobe PDF | View/Open |
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