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Client-Server Based LBS Architecture: A Novel Positioning Module for Improved Positioning Performance
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Author(s): Mohammad AL Nabhan (Brunel University, UK), Suleiman Almasri (Anglia Ruskin University, UK), Vanja Garaj (Brunel University, UK), Wamadeva Balachandran (Brunel University, UK)and Ziad Hunaiti (Anglia Ruskin University, UK)
Copyright: 2012
Pages: 16
Source title:
Emergent Trends in Personal, Mobile, and Handheld Computing Technologies
Source Author(s)/Editor(s): Wen-Chen Hu (University of North Dakota, USA)
DOI: 10.4018/978-1-4666-0921-1.ch011
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Abstract
This work presents a new efficient positioning module that operates over client-server LBS architectures. The aim of the proposed module is to fulfil the position information requirements for LBS pedestrian applications by ensuring the availability of reliable, highly accurate and precise position solutions based on GPS single frequency (L1) positioning service. The positioning module operates at both LBS architecture sides; the client (mobile device), and the server (positioning server). At the server side, the positioning module is responsible for correcting user’s location information based on WADGPS corrections. In addition, at the mobile side, the positioning module is continually in charge for monitoring the integrity and available of the position solutions as well as managing the communication with the server. The integrity monitoring was based on EGNOS integrity methods. A prototype of the proposed module was developed and used in experimental trials to evaluate the efficiency of the module in terms of the achieved positioning performance. The positioning module was capable of achieving a horizontal accuracy of less than 2 meters with a 95% confidence level with integrity improvement of more than 30% from existing GPS/EGNOS services.
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