摘要
探地雷达目标回波信号通常会受到串扰(或直达波)、随机噪声等的干扰,致使目标信号难以分辨。利用小波分析的时频局部化特性和多道探地雷达记录中直达波、目标回波信号以及随机噪声等的不同相关性,对探地雷达记录进行小波分解,得到多频段的小波剖面,再对不同频段的小波剖面做KL变换,实现了串扰抑制。通过实验数据和现场实测数据验证了该方法的有效性。
The target reflected waves of the ground penetrating radar(GPR) are usually disturbed by the clutter(or the direct wave) and the stochastic noise and causes the target signal to distinguish with difficulty.In this paper,we study a method based on KL transform in wavelet domain and apply it to reduce the clutter of the GPR.It uses the time-frequency localization characteristic of the wavelet analysis and their correlations on the direct wave,target reflected signals and stochastic noise in multichannel GPR d...
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2007年第2期70-72,共3页
Coal Geology & Exploration
基金
陕西省教育厅科学专项研究基金(04JK251)
关键词
小波变换
KL变换
探地雷达
串扰抑制
wavelet transform
KL transform
ground penetrating radar（GPR）
clutter reduction
