A hydrographic observation vessel takes measurements on or from the sea bottom. A coordination system on which the measurements are based needs to be identified. The problem is that this system, the permanent ship axis system, has a 6 degree motion freedom compared with the permanent earth axis system. A Kalman filter can be used to estimate the permanent ship axis system. But this requires a mathematical model which describes the low frequency movements of a ship. The Inoue model is one possible method to calculate a ship's maneuvering motion. The study shows that a few changes in the model reduce that problem. The new model can describe the backward sailing of a ship. However, this requires the identification of a whole new set of coefficients which can only be determined through actual field tests, which cannot always be done because of the possible interference of external forces such as wind and waves. The study uses simulation techniques to find out whether this new model meets the requirements.


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    Title :

    Aanzet Tot een Eenvoudig te Identificeren Manoeuvreermodel (First Step Toward Easily Identifiable Maneuvering Method)


    Contributors:

    Publication date :

    1988


    Size :

    44 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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