A NEW SYSTEM DESIGN TO ENHANCE LOCATION-BASED SERVICES AND POSITIONING ACCURACY

摘要

Location Based Services (LBS) provide resources and information depending on the user's location. In This paper three issues related to LBS as a pedestrian navigation system have been identified: the accuracy of positioning, the volume size of data, and data presentation to the end user. Addressing these issues will enhance the performance of the system. The proposed system allows the end users to access vital, accurate and updated information based on their location. Since this location is not fully accurate, particularly in the urban environments where users are most likely use this system, a new algorithm combines correction data available from SISNeT can be utilised on the information received from Global Positioning System (GPS) receiver to enhance the positioning accuracy. Moreover, to overcome the volume of data problem, a new mechanism can be used to allow the users to load only the data of the town they are travelling to (Zone based), and not the entire GIS database, depending on their user-profile (e.g. businessman, tourist, etc.). And to overcome the problem that most of the users are facing (dealing with maps), an alternative technique can be used which allows providing information in a form of photos, voice and short videos.