METHOD FOR PROVIDING A NAVIGATION INFORMATION, CORRESPONDING SYSTEM AND PROGRAM PRODUCT

A method for providing navigation information by a navigation sensing device including an absolute positioning source providing three-dimensional absolute position data including an absolute altitude value, an Inertial Measurement Unit providing inertial data, in particular accelerations and angular rates, and a barometer sensor providing a pressure measurement. The method includes processing the inertial data and the absolute position data to obtain two-dimensional position information, in particular longitude and latitude, and processing the pressure measurement and the absolute position data to obtain an altitude estimate.