Prof. Atsuhiro Muto Profile

Prof. Atsuhiro Muto

at Temple University

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Proceedings Article | 7 June 2024 Presentation + Paper

Dual-scan dual-frequency GPR imaging for mapping the permafrost table

Fauzia Ahmad, Albert Bulik, Atsuhiro Muto

Proceedings Volume 13048, 1304802 (2024) https://doi.org/10.1117/12.3017833

KEYWORDS: Image fusion, Radar, Image enhancement, Ground penetrating radar

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We present imaging results of a ground penetrating radar (GPR) dataset collected for permafrost studies at the APEX (Alaska Peatland EXperiment) BETA site, which is located approximately 30 miles southwest of Fairbanks, Alaska. The measurements were collected in an out-and-back style survey using a dual-frequency GPR with ultra-wide bandwidth centered at 170 MHz and 600 MHz. At each center frequency, we employ both conventional frequency-domain backprojection method and a sparse reconstruction technique with total variation minimization for subsurface image formation. As the latter minimizes the image gradient, it provides better edge preservation and improved reconstruction of extended targets, such as the permafrost table, compared to backprojection. We explore fusion of dual-frequency and dualscan subsurface images and compare performance of various combinations of image formation and fusion methods in terms of enhanced detection of the top of the permafrost table.

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