This report concludes the study Integrated navigation using MEMS-IMU. The navigation research presented here aims mainly toward developing and analyzing methods for the Armed Forces to reduce the costs associated with equipping as many military units as possible with robust navigation systems. The main goal of this study has been to compare two inexpensive IMU:s (Inertial Measurement Unit) based on MEMS technique (Micro Electro Mechanical System). Tests have been conducted both in laboratory and in high-dynamic environment. Different measurement techniques and analysis tools to determine both stochastic and deterministic errors have been investigated. Allan variance analysis is used to determine the parameters of the IMU´s stochastic errors. Also an experimental platform has been developed and tested for cost-efficient high-dynamic experiments. The test site for high-dynamic experiments is also efficient for exposing multisensor navigation systems to a very difficult environment. An important result in this study is that a reference system for evaluation of navigation systems in this environment should be independent of GNSS (Global Navigation Satelllite System).