. The design, development, and evaluation of a differential pressure gauge directional wave monitor. Water waves; Pressure transducers. - 6? concentrated at the simulated wave frequency. The ability to discriminate a number of different wave trains was next tested. Two wave trains of frequencies within one spectral bandwidth of one another and of different energy and direction were superimposed upon a train of lower frequency. Analysis was carried. oToo TIME (seconds ) FIGURE IV-5: Simulated time record of water surface elevation. Case 1. H - A ft., 0 = A6 d
. The design, development, and evaluation of a differential pressure gauge directional wave monitor. Water waves; Pressure transducers. - 6? concentrated at the simulated wave frequency. The ability to discriminate a number of different wave trains was next tested. Two wave trains of frequencies within one spectral bandwidth of one another and of different energy and direction were superimposed upon a train of lower frequency. Analysis was carried. oToo TIME (seconds ) FIGURE IV-5: Simulated time record of water surface elevation. Case 1. H - A ft., 0 = A6 deg., "7-98 sec. pd.; H=3 ft., e = 180 deg., sec. pd.; H = 4 ft., e = 300 deg., sec. pd. out for 512 sample points of second interval. A portion of the simulated time record of the water surface displacement generated over each of the five sampling points of the DPG is shown in Figure IV-5. The raw spectral energy distribution, or energy spectra, presented in Figure IV-6, illustrates the presence of three distinct frequencies well. Although the simulated lowest and highest frequency waves were of the same wave height, the higher frequency wave demonstrates a smaller energy spike due to the spectral leakage between the lower frequency bands. The non-smoothed 7~coefficient. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bodge, Kevin R; Coastal Engineering Research Center (U. S. ). Fort Belvoir, Va. : The Center ; Springfield, Va. : National Technical Information Service, Operations Division [distributor]
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