Systematic Errors Handling with MTE

Abstract Mathematical Theory of Evidence (MTE)1,2 extended for possibilistic platform3,4 enables modelling and processing uncertainty. It enables upgrading new models and solving crucial problems in many disciplines. Evidence combining scheme as mechanism enriching initial data informative context is useful in many cases. In nautical applications, for example, it can be exploited in order to make a fix and evaluate its accuracy. MTE delivers new unique opportunity once one engages possibilistic concept. Approaches towards theoretical evaluation of tasks including imprecise nautical data were already proposed. Nevertheless one of important issue that is indication and evaluation of a measurement systematic error remain unexplored. In nautical practice in order to calculate fixed correction one has to know directions or distances to a landmarks. Engaging MTE apparatus in order to cope with random and systematic errors is the main topic of the paper.