Mise au point d’une plateforme d’étalonnage des compas magnetiques

Instruments used to measure speed and direction of sea currents are equipped with magnetic compass and tilt sensors, in order to be able to reference their data in a terrestrial referential. Compass being sensible to their magnetic environment, it is necessary to calibrate currentmeters in their using configuration. In this order, a non-magnetic platform has been built. Reference directions and tilt expended uncertainties reached with this equipment are respectively 1 ° and 0.32 °. Results obtained during different trials of current profilers are exposed.