A sea state estimation device includes: a time history memory unit which stores a time history of ship motion data relating to a rolling angle, a pitching angle and a heaving displacement of a ship; a hull condition data calculation unit which calculates current hull condition data of the hull based on the time history of the ship motion data stored in the time history memory unit; a cross spectra calculation unit which calculates cross spectra of respective ship motions consisting of rolling, pitching and heaving of the hull based on the time history of the ship motion data stored in the time history memory unit; a hull response function calculation unit which calculates a hull response function based on the hull condition data calculated by the hull condition data calculation unit; and a sea state estimation unit which estimates a sea state in sea on which the hull is running based on the cross spectra of the respective ship motions calculated by the cross spectra calculation unit and the hull response function calculated by the hull response function calculation unit.


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    Title :

    HYDROGRAPHIC PHENOMENA ESTIMATION APPARATUS AND HYDROGRAPHIC PHENOMENA ESTIMATION METHOD


    Additional title:

    VORRICHTUNG ZUR SCHÄTZUNG VON HYDROGRAFISCHEN PHÄNOMENEN UND VERFAHREN ZUR SCHÄTZUNG VON HYDROGRAFISCHEN PHÄNOMENEN
    APPAREIL D'ESTIMATION DE PHÉNOMÈNES HYDROGRAPHIQUES ET PROCÉDÉ D'ESTIMATION DE PHÉNOMÈNES HYDROGRAPHIQUES


    Contributors:

    Publication date :

    2019-07-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01W METEOROLOGY , Meteorologie / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



    HYDROGRAPHIC PHENOMENA ESTIMATION APPARATUS AND HYDROGRAPHIC PHENOMENA ESTIMATION METHOD

    TAMASHIMA MASAHIRO / TERADA DAISUKE / MATSUDA AKIHIKO et al. | European Patent Office | 2017

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