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Heave Motion Measurement by Adaptive Filter Based on Longuet-Higgins Wave Model
Joint Authors
Lu, Jiazhen
Luo, Qiuwei
Yang, Yanqiang
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-02-28
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A method is proposed to obtain heave motion information based on the Longuet-Higgins wave model.
The Longuet-Higgins wave model which is closer to the sea wave is introduced.
Based on it, random process of the noise is analyzed and the highpass filter is designed to reduce errors.
Then it is the key point in this article that an adaptive algorithm is put forward because of the complexity of the waves.
The algorithm adjusts the cutoff frequency to reduce the amplitude attenuation of the filter by analyzing the wave.
For the same reason the comprehensive parameter of the phase compensation can be also obtained by the algorithm.
Simulation measurement results show that under the rough sea situation the maximum value of absolute error is 0.4942 m according to the normal method, the method is 0.1170 m, and the average error ratio of the rough sea test reduces to 3.89% from 12.54%, which demonstrates that the adaptive filter is more effective in measuring heave movement.
A variety of simulation cases show that the adaptive filter can also improve the precision of the heave motion under different sea situations.
American Psychological Association (APA)
Lu, Jiazhen& Luo, Qiuwei& Yang, Yanqiang. 2017. Heave Motion Measurement by Adaptive Filter Based on Longuet-Higgins Wave Model. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1191436
Modern Language Association (MLA)
Lu, Jiazhen…[et al.]. Heave Motion Measurement by Adaptive Filter Based on Longuet-Higgins Wave Model. Mathematical Problems in Engineering No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1191436
American Medical Association (AMA)
Lu, Jiazhen& Luo, Qiuwei& Yang, Yanqiang. Heave Motion Measurement by Adaptive Filter Based on Longuet-Higgins Wave Model. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1191436
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1191436