Location Based Services (LBS)
Research in GPS navigation has resulted in a patented system for blind navigation (Brunel Blind Location Based Service). Generally, LBS products should also satisfy most end users' requirements and incorporate privacy in the communication links. One of the main challenges of BBLBS is the performance of the received GPS data in terms of accuracy and precision; especially while navigating the blind in urban environments where availability of GPS signals is limited and high accuracy levels are needed. To overcome this difficulty, a new architecture is being implemented that is based on integrating several navigation systems. This architecture will extend the Differential GPS (DGPS) method to be used for wide area correction coverage using the Ordnance Survey GPS network. The wide area DGPS method will be integrated with wide area correction signals from EGNOS satellites and from the SISNET server. This hybrid system will work as an augmentation system that utilises the best available correction signal; thus increasing the reliability and integrity of Brunel Blind LBS System. Another complementary area of research that is being pursued is human factors in the design and control of system products, environment and services. Application of visual ethnography methods are used in user requirements.
