Qualitative Analysis of Sign-Bit Processing,
Abstract
This paper discusses the sign-bit processing in the Born inversion method. It shows on basic examples that in the absence of relative true amplitude, the Born inversion algorithm written by Bleistein-Cohen still provides an image of the subsurface. It implies that all the essential information provided by a wave train is contained in the phase only. Sign-bit digital recording means that only the sign of the true amplitude signal is recorded with one bit. In conventional seismic recording, 16 to 32 binary bits per sample point are recorded. The economic advantages of sign-bit acquisition are immediately obvious. Complete amplitude recovery comparable to full gain recording can be achieved by correct application of sign-bit techniques. Sign-bit data recording has interested the seismic exploration industry for many years because it provides an easy way to greatly decrease the number of channels in a data acquisition system. Sign-bit digital recording means that only the sign of the analog signal is recorded with one bit. In conventional seismic recording 16 to 32 binary bits are necessary for each sample point. So the economic advantages of sign-bit recording are obvious. It is necessary to check that the results obtained from usual seismic processings are valid and still provide good information. Additional keywords: Signal to noise rates; acoustic wave equations; Fourier transformation; GEO2D computer program.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1985
- Accession Number
- ADA154776
Entities
People
- I. Leroux
Organizations
- Colorado School of Mines