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008240905e197611##nscd    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
0861 |aD68-21/1-1976E-PDF
1001 |aHodson, C., |eauthor.
24510|aHydrophone calibration by the substitution method using pseudo-gaussian white noise / |cC. Hodson, G.W. McMahon ; approved by R.A. Kendall.
264 1|aDartmouth, N.S. : |bCanada Research and Development Branch, Department of National Defence, Defence Research Establishment Atlantic, |cNovember 1976.
300 |a1 online resource (v, 18 pages, 2 unnumbered pages) : |bgraphs.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aD.R.E.A. technical memorandum ; |v76/B
500 |aDigitized edition from print [produced by Defence Research and Development Canada].
504 |aIncludes bibliographical references (page 16).
5203 |a"A computer-based procedure has been developed for calibrating hydrophones by the substitution method using a pseudo-gaussian white noise signal. The technique has been shown to be a viable alternative to the more conventional CW and pulsed CW substitution methods. Owing to the wideband nature of the noise signal, the effects of boundary conditions are reduced considerably. Software routines for a Honeywell H-316 minicomputer are used to generate the noise signal, perform the analog-to-digital sampling and carry out the calibration computations. This method is particularly useful for low frequency wideband calibration and would allow measurement to less than one Hertz"--Abstract, page ii.
546 |aIncludes abstracts in English and French.
650 0|aHydrophone|xCalibration.
650 0|aUnderwater acoustics|xInstruments.
650 0|aRandom noise theory.
650 6|aHydrophones|xÉtalonnage.
650 6|aAcoustique sous-marine|xInstruments.
650 6|aThéorie du bruit aléatoire.
7102 |aDefence Research Establishment Atlantic, |eissuing body.
830#0|aD.R.E.A. technical memorandum ;|v76/B.|w(CaOODSP)9.941838
85640|qPDF|s1.11 MB|uhttps://publications.gc.ca/collections/collection_2024/rddc-drdc/D68-21-1-1976-eng.pdf