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Three-dimensional Reverse Time Migration for Detecting Tree Trunk Defects Using Ground Penetrating Radar
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Three-dimensional Reverse Time Migration for Detecting Tree Trunk Defects Using Ground Penetrating Radar
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Journal Article
Three-dimensional Reverse Time Migration for Detecting Tree Trunk Defects Using Ground Penetrating Radar
2024
Overview
Due to environmental degradation and external intrusions, trees may develop various defects that diminish their stability and survival rates, leading to significant losses. Ground penetrating radar (GPR), characterized by its rapid and non-destructive advantages, has been regarded as a potentially effective method for assessing tree health conditions. However, existing GPR-based tree imaging techniques are predominantly two-dimensional (2D), making it difficult to diagnose three-dimensional (3D) structural features of defects. Therefore, this paper introduces, for the first time, 3D reverse time migration (RTM) into trunk defect detection. Compared to 2D RTM, 3D RTM can simultaneously back-propagate in-line and cross-line signals, accurately locate reflection waves, and focus diffracted waves, reconstructing the true interfaces and defect positions within the tree trunk. Experimental results on irregular trunk models containing a cavity demonstrate the feasibility of 3D RTM in trunk defect detection, providing specific and comprehensive guidance for formulating tree protection and restoration measures.
Publisher
IOP Publishing
