A comparison of power spectra of ocean waves obtained by an analog and a digital method

Power spectra of ocean waves obtained by an analog method are presented. In the analog method, standard laboratory equipment is used and no design or development work is required. A sample power spectrum of an ocean wave pressure record is obtained by the analog method, and this spectrum is compared with a power spectrum obtained by a digital analysis of the same record. The agreement of the spectral shapes and the variances obtained by the two methods is fairly good.