Blurring/Clutter Mitigation in Quarry Monitoring by Ground-Based Synthetic Aperture Radar

Ground-based synthetic aperture radar (GBSAR) systems are widely used for monitoring slopes, especially in quarries and open pits. Unfortunately, the movement of the machinery (cranes, trucks, shovels, and excavators) in the radar field of view often prevents to correctly focus large circular sectio...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2021-11, Vol.59 (11), p.9282-9289
Main Authors: Miccinesi, Lapo, Michelini, Alberto, Pieraccini, Massimiliano
Format: Article
Language:English
Subjects:
Blurring
Clutter
Cranes
Doppler
Doppler effect
Doppler radar
Field of view
ground-based synthetic aperture radar (GBSAR)
Heavy duty trucks
Image acquisition
Image processing
Machinery
Mitigation
Monitoring
Quarries
quarry
Radar
Radar imaging
Rails
SAR (radar)
Shovels
Spaceborne radar
Synthetic aperture radar
Trucks
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Summary:Ground-based synthetic aperture radar (GBSAR) systems are widely used for monitoring slopes, especially in quarries and open pits. Unfortunately, the movement of the machinery (cranes, trucks, shovels, and excavators) in the radar field of view often prevents to correctly focus large circular sections of the radar images, producing a characteristic artifact, often named "blurring." Therefore, the aim of this article is to propose both an acquisition modality and an image processing technique able to mitigate the blurring due to moving clutter. The proposed acquisition modality (named "free-running" or "on-the-fly") allows to filter out the high-frequency clutter, which is often noticeable in GBSAR images, but it is not effective with low-frequency clutter caused by slow movement of machinery like heavy trucks or large cranes. For this reason, the authors propose even a suitable processing method that can be used in combination with high-frequency sampling. The application of these two methods has been proved to be very effective in realistic quarry scenario.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2021.3049385