On: “Unambiguous signal recovery above the Nyquist using random‐sample‐interval imaging,” (R.D. Wisecup, GEOPHYSICS, 63, 763–771)

Abstract

Wisecup (1997) claims that “a simple, exact sample‐maping methodology, random‐sample‐interval imaging, can be used to overcome aliasing in many of the processes currently used for the imaging of seismic data.” Other statements are that “increased equipment costs are incurred due to the presumed (italics by GJOV) requirement for antialias filter circuitry in the recording instruments,” and “many antialias strategies currently in use may be inappropriate,” and many more such remarks. The question comes up whether this random‐sample‐interval imaging (RSI2) is really so wonderful as it is purported to be.