小波变换在去除探地雷达信号直达波的应用

Suppressing the direct wave noise in GPR data using the 2-D continue directional wavelets

基于二维有向连续小波良好的方向选择性 ,对于探地雷达信号中的直达波进行了去除。通过对两个不同性质的埋地目标的处理 ,验证了这种方法的有效性。应用一维小波变换方法计算了探地雷达信号的瞬时参数 ,分析了几种瞬时参数对于目标识别的作用 ,并且比较了直达波对瞬时参数识别目标的影响。

The 2 D continue directional wavelet transform is successfully used to suppress the direct wave in GPR data. The validity of the method is demonstrated by processing the measured data of two different buried objects. Moreover, the influence of direct wave on the estimation of the position and shape of the buried objects with the instantaneous parameters (IP) computed by 1 D CWT is further discussed.