探地雷达子波确定性稀疏脉冲反褶积技术

为了提升探地雷达数据的纵向分辨率，并解决传统反褶积方法对噪声敏感的问题，提出一种针对探地雷达信号的稀疏脉冲反褶积处理方法.通过试验获取子波信息，基于确定性的子波，采取正则化的反演方法，从信号中获得主要的反射系数.通过2个数值试验以及1个实际案例，对比分析处理前后的单道信号、剖面、频谱等情况，并与传统反褶积方法的结果做比较，结果表明：该方法相对于传统方法能较大地改善分辨率，并且受噪声影响较小，得到的结果成像效果更好.该方法经验证是一项有效、可行的探地雷达信号处理技术.
Abstract: A sparse spike deconvolution method for GPR signals was put forward in order to improve the vertical resolution of ground penetrating radar (GPR) data and solve the noise-sensitive problem of traditional deconvolution technique. Firstly the wavelet was acquired by experiment. Then a constraint inversion method using the deterministic wavelet was carried out to obtain the dominating reflectivity series from signals. The signals of single channel, profiles, spectrums, etc. before and after the process were analyzed through two numerical simulation experiments, as well as a practical case. Results were compared with that of the traditional deconvolution. The analyzing and comparing results show that the method can improve the resolution very well and is less affected by noise, which can provide a better image of the target. Our method is proved to be an effective and feasible GPR signal processing technique.