STUDY OF THE ACCURACY AND UNCERTAINTIES OF DIRECTIONAL WAVE NAVIGATION RADAR MEASUREMENTS CONFRONTED WITH PITCH-ROLL BUOY DATA

The knowledge of the spectral behaviour of a specific sea region is complete when the surface elevations, as well as directional wave movements are known. Usually, sea directional descriptions are made using pitch-roll buoys, which can provide several wave characteristic time series. Alternatively, there are other measuring systems, using remote sensing techniques such as shipboard navigation radars. This paper discusses results obtained from pitch- roll data and ship radar wave measurements, including the accuracy and uncertainties of each method.