Application of Multi-level Recursive Method for Ship-Sway prediction
China Satellite Maritime Tracking and Controlling Department, Jiangyin 214431, China
The ship-sway is a non-stationary time series while ship sailing in the sea , when using the traditional orthogonal polynomial fitting,index filtering or Kalman filtering to predict ship-sway, the prediction error may be large, because the model parameters are fixed and cannot be adjusted in real time according to the measured data. Multi-level recursive method treats the dynamic system as a time-varying parameters of the system, and can be more in line with the objective reality of rocking the ship. After analyzing the characteristics of the ship-sway, the predict model established by multi-level recursive has been built and test results showed that this model can improve the prediction accuracy of the ship-sway data, and has some practical value in the prediction of the ship-sway.
Key words: Multi-level recursive / Ship-sway prediction / EViews / Stationary time series
© Owned by the authors, published by EDP Sciences, 2016
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