Analysis and Interpretation of Wave Spectral Data

LeBlanc, Lester R.; Middleton, F. H.; Milligan, S. D.

doi:10.4043/2424-ms

Cited by 1 publication

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“…So, these four window types can be taken into consideration. In line with this, in applications for spectrum analysis of ocean waves, the Hamming window or Hann window type is generally used for spectrum analysis of random waves [13], [14], [15]. The results of the implementation of the Hann window function on data dated August 23 th 2016 and August 24 th 2016 are presented in Figure 13.…”

Section: Window Function Settings Application In Power Spectral Densitymentioning

confidence: 85%

Pre-processing data and window function testing on wave spectrum analysis

Panalaran,

Suntoyo,

Sulisetyono

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Pre-processing data in oceanographic data research is an important step in processing data into the required information. This phase often takes longer and more rigorous time to present the correct data. Data pre-processing involves the selection of data, and the modification of data so that it can be readable in a computational algorithm. The data selection process includes selection of sample numbers, correction and filling of data gaps.The data used in spectrum analysis is the recording of the water surface profile of the wave in the data resolution of 1 second. The data needs to be corrected by the process of detrending against the tidal height which become the still water level. The spectral analysis is processed using the pwelch function on MATLAB. The frequency spectrum curve of the measurement is obtained from the calculation of the power spectral density value. In order to obtain a stable power spectral density curve, the Hann window function is used with the number of window elements, nfft/16.

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Section: Window Function Settings Application In Power Spectral Densitymentioning

confidence: 85%