Robust navigation - final report

Robust navigering is a research project spanning over three years. The main objective is to design algorithms and simulation models for evaluation of robust navigation systems. The purpose of this report is to commuicate an overview of project activities and uses of robust navigation systems for civil and defence applications. FOI (The Swedish Defence Research Agency) has been involved in research on integrated navigation systems for a long time with special focus on cost effective navigation systems. During 2006 ultra tightly integrated navigation systems were studied. An ultra tight integration system uses information from inertial navigation system (INS) not only to improve the estimates of position and velocity but also to achieve more efficient tracking of satellite signals in the GPS receiver. An ultra tight integration therefore works well in a weak-signal environment (indoor and urban environment) and can even track blocked satellite signals. The ultra tight integration is also superior to other integration methods in military applications, typically in scenarios with intentional jamming and high dynamics, with better jamming resistance and more accurate positioning than traditional navigation systems.