探地雷达信号的反褶积研究

Research on the Deconvolution of Ground-Penetrating Radar Signal

根据探地雷达信号基本子波的特点,设计了一种适宜于探地雷达信号的反褶积算法。该方法将基本子波转化为一个位于子波绝对最大值处的尖脉冲,反褶积后,子波被压缩在绝对值最大处,而不是在子波的开始。它可以有效地去除基本子波的拖尾,压缩基本子波的长度,提高信号的纵向分辨率和信噪比。通过对探地雷达实验数据和高速公路检测数据的计算,表明了该算法是一种非常有效的方法。

According to characteristics of ground-penetrating radar （GPR） signal, this paper designs a GPR deconvolution algorithm which is adapted to GPR. This deconvolution changed the wavelet into the point pulse at the absolute maximum of the wavelet. After deconvolution, the wavelet is compressed at the absolute maximum value of the wavelet, not in the beginning. This algorithm can effectively remove the delayed tail of GPR waveform, reduce length of the wavelet and to improve depth resolution of ground-penetrating radar data and the singnal-noise ratio. The calculation of GPR experimental data and the data processing of highway detection indicate that this algorithm is a very effective method.