DAAT - A NEW TECHNIQUE FOR WAVE DIRECTIONAL ANALYSIS

摘要

This work presents a new spectral technique for analysis of data from wave directional sensors. It is well known that one of the main problems in directional analysis is a poor spatial resolution due to the small number of sensors. The new technique can provide better resolution by detecting the occurrence of certain events along a record, i.e., waves of a given frequency range propagating in a well defined direction. The combination of these events allows for the computation of the energy directional distribution, D(θ), as well as for the values of spread for different seas and, at last, the directional spectrum. Some examples of wave climate of the Campos basin off Rio de Janeiro coast using this technique are shown.