Recent developments on data processing of strong-motion accelerograms: interpolation of uniform and non-uniform sampling from digitized acceleration data
✍ Scribed by Vincent W. Lee
- Book ID
- 104322680
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 826 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0267-7261
No coin nor oath required. For personal study only.
✦ Synopsis
Communicated by M. D. Trifunac
Various stages of data processing of strong-motion accelerograms* often require the interpolation of uniformly spaced data to a higher sampling rate. Semi-automatic or automatic digitization of strong-motion earthquake data from analog traces on film can result in a portion or all of a record to be sampled at a nonuniform rate. This requires interpolation to obtain uniform, equally-spaced data. The procedure of a straight-line or a higher order interpolation is examined. The classical interpolation formulae are studied in the frequency domain. Interpolation formulae which are derived from the sampling theorem of bandlimited functions (the Cardinal Series) are also studied. Finally, the question of the unique reconstruction of bandlimited data from nonuniform samples is examined.