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On errors in low frequency wave measurements from wave buoys

机译：浮标在低频波测量中的误差

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摘要

Floating wave buoys are widely considered as a global standard for wave data. Marine renewable energy presents a relatively new industry for wave measurements, requiring a high level of accuracy for applications including resource assessment performance assessment and engineering design. This study draws on the unique deployment of four identical wave buoys in close proximity and a period of data from a free-floating buoy to classify spurious low frequency measurements as erroneous. The nature of the occurrence of these errors, and their effect on the validity of measurements are also examined. The work shows that the errors are directly related to the drag forces on the buoy, but with a correctly designed filter, the effect of the errors on the wave measurements can be mitigated. A variable filter process is described which improves the accuracy of measurements captured by these buoys. This is recommended for all interpretation of these data, and is essential for any detailed statistical analysis.
机译：浮动波浪浮标被广泛认为是波浪数据的全球标准。海洋可再生能源为波浪测量提出了一个相对较新的行业，要求包括资源评估性能评估和工程设计在内的应用具有很高的准确性。这项研究利用了四个相同的浮标在附近的独特部署以及来自自由浮标的一段时间的数据，将伪造的低频测量结果分类为错误的。还检查了这些错误发生的性质及其对测量有效性的影响。这项工作表明，误差与浮标上的阻力直接相关，但是通过正确设计滤波器，可以减轻误差对波浪测量的影响。描述了一种可变的过滤过程，其提高了由这些浮标捕获的测量的准确性。建议对所有这些数据进行解释，这对于任何详细的统计分析都是必不可少的。

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  • 来源
    《Ocean Engineering》 |2015年第1期|11-22|共12页
  • 作者

    I.G.C. Ashton; L. Johanning;

  • 作者单位

    Offshore Renewable Energy Group, College of Engineering, Maths and Physical Sciences, University of Exeter, Cottage 7, Tremough Barton, Penryn Campus, Cornwall TR3 7RH, UK;

    Offshore Renewable Energy Group, College of Engineering, Maths and Physical Sciences, University of Exeter, Cottage 7, Tremough Barton, Penryn Campus, Cornwall TR3 7RH, UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ocean waves; Wave energy; Metocean; Wave buoy;

    机译：海浪;波能;线虫波浪浮标;

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