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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >A Fast Back-Projection Algorithm Based on Cross Correlation for GPR Imaging
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A Fast Back-Projection Algorithm Based on Cross Correlation for GPR Imaging

机译:基于互相关的GPR成像快速反投影算法

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摘要

In ground-penetrating radar imaging, the classic back-projection (BP) algorithm has an excellent reputation for imaging in layered mediums with convenience and robustness. However, the classic BP algorithm is time consuming and with a lot of artifacts, which have adverse effects on the following work like detection and recognition. A novel BP algorithm, which is both fast and with good effect of suppressing artifacts, is proposed in this letter. At first, an approved approximation method is used to calculate the position of refraction point with remarkable speed and satisfactory accuracy. Then, a lookup table is used to reduce the redundancy in classic BP algorithm. In order to achieve effective artifact suppression, a cross-correlation-based method is introduced. Experimental results of field data present the superiority of the proposed BP algorithm over its classic counterpart both in operation speed and artifact suppression.
机译:在探地雷达成像中,经典的反投影(BP)算法以其便捷性和鲁棒性在分层介质中成像具有极高的声誉。但是,经典的BP算法非常耗时,并且有很多伪像,它们对诸如检测和识别之类的后续工作产生不利影响。本文提出了一种新颖的BP算法,该算法既快速又具有良好的抑制伪影效果。首先,使用一种公认的近似方法来计算折光点的位置,其速度非常快且精度令人满意。然后,使用查找表来减少经典BP算法中的冗余。为了实现有效的伪像抑制,引入了基于互相关的方法。现场数据的实验结果表明,在操作速度和伪影抑制方面,所提出的BP算法优于其经典算法。

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