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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |aln-----
0861 |aD68-21/28-1990E-PDF
1001 |aChapman, David M. F., |d1953- |eauthor.
24510|aSynthetic ocean waveforms for testing sonobuoy suspensions / |cDavid M. F. Chapman ; approved by P. Bhartia.
264 1|aDartmouth, N.S. : |bNational Defence, Research and Development Branch, Defence Research Establishment Atlantic, |cDecember 1990.
300 |a1 online resource (iv, 20 pages) : |bgraphs.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aTechnical memorandum ; |v90/209
500 |aDigitized edition from print [produced by Defence Research and Development Canada].
504 |aIncludes bibliographical references (page 15).
5203 |a"Four synthetic ocean waveforms are proposed for the testing of sonobuoy suspensions. They are based on the Bretschneider ocean wave spectrum, with significant waveheights chosen from the sea state code of the World Meteorological Organization (WMO) and corresponding peak periods based on statistical data from the Canadian North Atlantic Ocean in winter conditions. The waveforms are presented as sums of 20 sine-wave components of specified frequency, amplitude, and phase. There is one waveform each for WMO sea states 3, 4, 5, and 6, corresponding to significant waveheights of 1.25 m, 2.5 m, 4 m, and 6 m, respectively; the associated peak periods are 9 s, 10 s, 12 s, and 14 s, respectively. The maximum and minimum frequencies for each waveform are chosen to bracket 98% of the wave energy. All the information required to generate the waveforms is provided; waveform plots and numerical values at 0.5 s intervals are included for checking purposes"--Abstract, page ii.
546 |aIncludes abstracts in English and French.
650 0|aOceanographic buoys|zNorth Atlantic Ocean.
650 0|aOcean waves|zNorth Atlantic Ocean|xMeasurement.
650 6|aBouées océanographiques|zAtlantique Nord.
650 6|aVagues|zAtlantique Nord|xMesure.
7102 |aDefence Research Establishment Atlantic, |eissuing body.
830#0|aD.R.E.A. technical memorandum ;|v90/209.|w(CaOODSP)9.941838
85640|qPDF|s1,017 KB|uhttps://publications.gc.ca/collections/collection_2024/rddc-drdc/D68-21-28-1990-eng.pdf