Improved Methods for GPS Navigation

Sammanfattning: This Master's Thesis presents the development of methods for improved GPS navigation on Wayfinder Navigator, a mobile phone based navigation system developed by Wayfinder Systems. Focus has been put on off track detection, i.e. to detect a user diverging from the route given by the navigation system, and how the GPS position is presented to the user by the application. Improving off track detection includes both lowering the detection time and simultaneously maintaining robustness in order to avoid false alarms due to different types of error sources.