An Assessment of GSM/GPRS Link in a Navigation System for Visually Impaired Pedestrians
CONIELECOMP '04 Proceedings of the 14th International Conference on Electronics, Communications and Computers
A critical evaluation of location based services and their potential
Journal of Location Based Services
CNSR '08 Proceedings of the Communication Networks and Services Research Conference
Applications of location-based services: a selected review
Journal of Location Based Services
| Hi-index | 0.00 |
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.