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Keywords = recursive subsurface boundaries enhancement

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16 pages, 12058 KB  
Article
Recursive Enhancement of Weak Subsurface Boundaries and Its Application to SHARAD Data
by Peng Fang and Jinhai Zhang
Remote Sens. 2022, 14(6), 1525; https://doi.org/10.3390/rs14061525 - 21 Mar 2022
Cited by 5 | Viewed by 3144
Abstract
Sedimentary layers are composed of alternately deposited compositions in different periods, reflecting the geological evolution history of a planet. Orbital radar can detect sedimentary layers, but the radargram is contaminated by varying background noise levels. Traditional denoising methods, such as median filter, have [...] Read more.
Sedimentary layers are composed of alternately deposited compositions in different periods, reflecting the geological evolution history of a planet. Orbital radar can detect sedimentary layers, but the radargram is contaminated by varying background noise levels. Traditional denoising methods, such as median filter, have difficulty dealing with such kinds of noise. We propose a recursive signal enhancement scheme to identify weak reflections from intense background noise. Numerical experiments with synthetic data and SHARAD radargrams illustrate that the proposed method can enhance the clarity of the radar echoes and reveal delicate sedimentary structures previously buried in the background noise. The denoising result presents better horizontal continuity and higher vertical resolution compared with those of the traditional methods. Full article
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