1.桂林电子科技大学信息与通信学院 桂林 541004; 2.桂林电子科技大学卫星导航定位与位置服务国家地方联合工程研究中心 桂林 541004; 3.广西大学土木建筑工程学院 南宁 530004
P315.63
国家自然科学基金（62101147，51708136）、广西自然科学基金（桂科2020GXNSFAA159146）、桂林电子科技大学研究生创新项目（2021YCXS032）资助
Xin Wenkai
1.School of Information and Communication, Guilin University of Electronic Technology，Guilin 541004, China； 2.National and Local Joint Engineering Research Center for Satellite Navigation, Positioning and Location Services, Guilin University of Electronic Technology，Guilin 541004, ChinaYan Kun
1.School of Information and Communication, Guilin University of Electronic Technology，Guilin 541004, China； 2.National and Local Joint Engineering Research Center for Satellite Navigation, Positioning and Location Services, Guilin University of Electronic Technology，Guilin 541004, ChinaGan Haiming
1.School of Information and Communication, Guilin University of Electronic Technology，Guilin 541004, China； 2.National and Local Joint Engineering Research Center for Satellite Navigation, Positioning and Location Services, Guilin University of Electronic Technology，Guilin 541004, China1.School of Information and Communication, Guilin University of Electronic Technology，Guilin 541004, China; 2.National and Local Joint Engineering Research Center for Satellite Navigation, Positioning and Location Services, Guilin University of Electronic Technology，Guilin 541004, China; 3.School of Civil and Architectural Engineering, Guangxi University，Nanning 530004, China
在探地雷达野外应用中，多次波是一种常见的干扰波，会影响雷达数据的真实性及可靠性，给目标解释工作带来困难。Radon变换在地震处理领域中广泛应用于多次波抑制，但在探地雷达领域中对此进行研究运用的仍不多。针对双曲线探地雷达反射波，对Radon变换理论进行分析阐述，在弱目标回波与强目标的多次波位置高度重叠，并且多次波强度接近弱目标回波强度的实例中，通过分析Radon域中弱目标与多次波位置与能量强度的差异，通过选择过滤窗并且在Radon域中对其进行多项式拟合恢复多次波能量，然后经过Radon正演在时空域中恢复多次波数据，再从原始雷达数据中减去多次波，实现对多次波的抑制，获得了无假象干扰的雷达数据。实验结果表明，在保留弱目标回波强度的同时取得了较好的多次波抑制效果。
In the field application of ground penetrating radar, multiple waves are a common interference wave, which will affect the authenticity and reliability of radar data and bring difficulties to target interpretation. The Radon transform is widely used in the field of seismic processing for multiple suppression, but it is still not much studied and applied in the field of ground penetrating radar. This paper analyzes and expounds the Radon transform theory for the reflected wave of hyperbolic ground penetrating radar. In the case where the position of the weak target echo and the multiple wave of the strong target are highly overlapping, and the multiple wave intensity is close to the strength of the weak target echo, analyze the difference between the position and energy intensity of weak targets and multiples in the Radon domain, recover the multiple energy by selecting the filter window and performing polynomial fitting on it in the Radon domain, and then recover multiple times in the spacetime domain through Radon forward modeling. Then, the multiple waves are subtracted from the original radar data to suppress the multiple waves, and the radar data without false interference is obtained. The experimental results show that a better multiple suppression effect is achieved while retaining the echo strength of weak targets.
辛文凯,闫坤,甘海铭,刘宗辉.基于改进Radon域多次波抑制的强弱目标分离[J].电子测量技术,2023,46(16):119-125
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