【摘要】 本文讨论取样间距为5s 的固体潮磁带数据的重取样及消除强地震干扰的方法。所提出的多项式拟合平滑取样方法(PFSS)使读带、平滑、取样同步进行。读带一结束,计算机内存就有了按给定间距的取样结果。由于只对有关点作格式变换和预处理,故可以节省计算时间;由于只存取样结果,故可以节省计算机空间。因此,这种方法适用于小间距而延续时间长的固体潮磁带数据。采用功率谱分析,并对 PFSS 方法的结果作了检验,证明这种方法具有良好的滤波功能。为了消除强地震干扰所引起的畸变,采用 Nakai 方法并给出迭代程序,也用谱分析作了检验。校正后的观测数据,其谱分析结果与理论潮结果相似。更多还原

【Abstract】 In this paper, the re-sampling of tidal tape data at 5-second intervals and the method of elimination of strong earthquake noise are discussed.The polynomial fit smooth sample (PFSS) method is given in this paper. The PFSS synchronizes tape reading, smoothing and sampling. The memory of the computer has already had sampling results in the light of the given interval as soon as the tape reading finishes. Since format translation and preprocessing are performed for the relevant points, computer time is minimized. And since only sampling results are stored, less computer space is required. So the PFSS is usefull for processing of tidal tape data of small interval and long duration.In order to check the results of the PPSS, analysis of power spectra is used. The calculated example shows that the PFSS has a good filtering function.Nakai method is used to eliminate distortion caused by a strong earthquake and an iterated procedure is given. The calculated results are checked by analysis of power spectra, top. The results of spectral analysis of observed data which have been corrected for earthquake noise are similar to the results of theoretical tide analysis.更多还原