Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging

Gaurav Dutta, Abdullah AlTheyab, Ahmad Tarhini, Sherif Hanafy, Gerard T. Schuster

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Field experiments are used to unequivocally demonstrate seismic superresolution imaging of subwavelength objects in the near-field region of the source. The field test is for a conventional hammer source striking a metal plate near subwavelength scatterers and the seismic data are recorded by vertical-component geophones in the far-field locations of the sources. Time-reversal mirrors (TRMs) are then used to refocus the scattered energy with subwavelength resolution to the position of the original source. A spatial resolution of lambda/10, where lambda is the dominant wavelength associated with the data, is seen in the field tests that exceeds the Abbe resolution limit of lambda/2.
Original languageEnglish (US)
Pages (from-to)1194-1203
Number of pages10
JournalGeophysical Journal International
Volume206
Issue number2
DOIs
StatePublished - May 29 2016

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